i just got this phone a few days ago. i love it. nothing wrong with it.
super fast and everything. im on 2.3.6. no issues. my battery lasts 12 hours easy. and actually up to 26 hours so far.
i dont even feel the need for a custom rom. at least not for now.
but one thing that makes me mad is how slow the phone charges, anyone know why this is ? it's kinda frustrating lol
any way to change this ?
also....i kinda hate that there is no camera button on the actual phone. oh well.
*Edited*
well i dont like to charge unless my battery is on red. so that conflicts, its not always red when i go to sleep. but thanks i'll check it out.
and i dont want to unlock to camera. it's easier to take photos with a button is what im saying
mrljlamon said:
well i dont like to charge unless my battery is on red. so that conflicts, its not always red when i go to sleep. but thanks i'll check it out.
and i dont want to unlock to camera. it's easier to take photos with a button is what im saying
Click to expand...
Click to collapse
If I remember correctly waiting till the battery is completely depleted is not a good thing for our batteries.
i never said completely depleted though.
and yea ive read so many reviews to not do that, and reviews that say you should... and reviews to charge it this much and that much and blah blah. may be a new phone, but none of this is new to me.
Charge current is hardware limited from what I've read. Or atleast for the time being. If your using the phone while charging it'll be significantly slower. Also using wallplug makes a difference. If you've got stuff running while charging try throttling down the CPU while charging.
Other than that I think our phone is limited to 650mah to charge. So 1650/650 is about 2.5 hours with perfect efficiency. Now take into account the power being drawn and how the chargers for li batteries work, that's about 3-4 hrs to be expected.
And don't run li batteries all the way down on a regular basis, its not good. I'm not positive on li ion batteries, but with lipo you generally want to use about %80 of rated capacity to prolong life and power of the cell.
400 mA on USB, 650 on a wall charger, CPU/screen usage counts against these limits - no way to change this
Forgot where I read it. Could be wrong too.
Slow charging for this phone was samsungs way of keeping our phones battery in shape. Hopefully prolonging the life of it. I noticed my 3GS lose about 20% of its full capacity in a couple years. Only time will tell?
Siyah has an option to upping the charging mA I believe.
Sent from my AT&T cellular device.
all useful responses and all make sense. thank you guys.
i dont use it when it charges and yea it does take about 4 hours to charge.
coming from a crappy xperia x10 which took about 2 hours to charge from 0 to 100
but this phone is 10 times better even without a custom rom so i can deal.
thank you guys for ur knowledge.
jdbeitz said:
Siyah has an option to upping the charging mA I believe.
Sent from my AT&T cellular device.
Click to expand...
Click to collapse
He removed it because it turned out not to work. (If it's still there I'm surprised - it should be completely gone.)
It turns out the I9100 has the same limitation as the I777 - charging is handled not by the MAX8997, but by a MAX8922.
Entropy512 said:
He removed it because it turned out not to work. (If it's still there I'm surprised - it should be completely gone.)
It turns out the I9100 has the same limitation as the I777 - charging is handled not by the MAX8997, but by a MAX8922.
Click to expand...
Click to collapse
Its still there. I have a 750mA charger and iit SEEMS to help but I don't know how to check it
Sent from my AT&T cellular device.
CurrentWidget
he removed the high ma charge back to defaults. you can still change them in voltage control but it wont do a damn thing. as entropy said 650 wall 450 misc.
My remix:
EM EYE YOU EYE
SIYAH nara to the rest, I'm rollin with the best.
SGS2 I777
Entropy512 said:
CurrentWidget
Click to expand...
Click to collapse
Does that widget only show charging current?
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
thejanitor86 said:
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
Click to expand...
Click to collapse
Enjoy the fireworks.
thejanitor86 said:
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
Click to expand...
Click to collapse
Hmmm when I used to run a different widget it would report that, but not with current widget. However I'm on a different ROM now, what ROM you on?
I'm currently on the latest ICScrewed
Sent from my SGH-I777 using XDA App
thejanitor86 said:
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
Click to expand...
Click to collapse
If you are on Entropy's DD kernel you should divide that number by 2.85
Battery charge current monitoring (CurrentWidget) support - only reports charge current and not discharge, and reports a value 2.85 times the actual current. Use CurrentWidget's "operation on value" to divide by 2.85.
Click to expand...
Click to collapse
Related
Hello dear members
I'd like to ask if an everyday charge will harm my battery.
It's my first week with my phone, and I can't keep my hands off it
As a result, battery runs out every day!! So I charge it...
Will something happen to the battery?
thanks in advance
This phone has a litium ion battery. They don't have a memory effect but in the first time they need some time to become the full potential. So it doesn't matter if you charge the phone every day.
Sent from my GT-I9100 using XDA App
Thank you so much!!!!
It's a relief
To maintain better battery life it might be a good idea to make sure that u dont fully drain the battery
That shouldn't be a problem the most battery's should have electronic inside to prevent this but I can't guarantee it. You can read also the Wikipedia article about lithium ion batteries it's quite interesting.
Sent from my Nexus S using XDA App
It is better for you to charge daily and often when the battery still has charge and not leave it until the battery is totally flat.
Thanks so much everyone Point taken
I'll never let it fall under 10%.
Well, Battery is average. If it weren't for the 2.3.3 bug, it would rock! In order for it to be normal, I keep ****ting Services.(under Services menu) like Voice talk, SocialHub(which drains a lot of battery) etc
Anyways, thanks to everyone
Sleepycat3 said:
It is better for you to charge daily and often when the battery still has charge and not leave it until the battery is totally flat.
Click to expand...
Click to collapse
Isn't it actually opposite, I mean somewhere I heard that if a Full charge is given after a Full drain then the battery gets conditioned (optimized I think), can't remember the source but I do remember the fact.
Sleepycat3 said:
It is better for you to charge daily and often when the battery still has charge and not leave it until the battery is totally flat.
Click to expand...
Click to collapse
I'm glad this thread exists. I'm so used to running a battery down to the minimum before charging it that I probably would have been in that habit for my SGS2. I'd actually come here to ask the same question now I've been through my first four or five "full" -> "red" -> "charge to full while off" cycles.
Is it confirmed both from the SGS2 & LION technology point of view to now keep it charged up, even if using only half/quarter charges etc to do so?
My battery is giving me around 40 hours a time so not too bad but I'd like to keep it running as well as I can.......
ithehappy said:
Isn't it actually opposite, I mean somewhere I heard that if a Full charge is given after a Full drain then the battery gets conditioned (optimized I think), can't remember the source but I do remember the fact.
Click to expand...
Click to collapse
Nope. Li-ion batteries these days prefer constant top-ups and full drain actually kills it faster. Totally opposite of what people have been taught over years of NiCD battery use that I've got friends who absolutely refuse to charge their iPhones unless it's at 10% or less. Their loss.
ithehappy said:
Isn't it actually opposite, I mean somewhere I heard that if a Full charge is given after a Full drain then the battery gets conditioned (optimized I think), can't remember the source but I do remember the fact.
Click to expand...
Click to collapse
No that's only good to do once in a while. Full discharges daily put stress on the cells and wear out li ion batteries quicker.
CarpathianUK said:
I'm glad this thread exists. I'm so used to running a battery down to the minimum before charging it that I probably would have been in that habit for my SGS2. I'd actually come here to ask the same question now I've been through my first four or five "full" -> "red" -> "charge to full while off" cycles.
Is it confirmed both from the SGS2 & LION technology point of view to now keep it charged up, even if using only half/quarter charges etc to do so?
My battery is giving me around 40 hours a time so not too bad but I'd like to keep it running as well as I can.......
Click to expand...
Click to collapse
Yes it's common for all lithium ion batteries to charge as often as possible. Its true for all phones on the market today and quite a lot of discussion on this is all around the web.
Also a replacement stock battery for any cell phone today is around 20 dollars, so really you can't do much wrong since its so cheap to buy a new OEM battery replacement.
Thanks for the replies. I think this will catch a few people out so hope the thread doesn't get missed amongst all the other battery ones!
Looks like I'd better change my charging habits!
Is there any way around this limit? Custom kernel etc.
It's really annoying that my phone discharges, albeit slowly, when using satnav and full screen brightness.
No, there is not. However, if you are using GPS in your car and your charger is detected as MISC or USB, you could increase that to 650mA.
Mine is detected as a charger, not MISC or USB, so I get the full 650mA but I need more current, probably 800mA would do the trick.
I wonder if fitting the new Samsung extended battery would increase the charging current.
gevans35 said:
Mine is detected as a charger, not MISC or USB, so I get the full 650mA but I need more current, probably 800mA would do the trick.
Click to expand...
Click to collapse
It would fry the phone, the battery or both.
gevans35 said:
I wonder if fitting the new Samsung extended battery would increase the charging current.
Click to expand...
Click to collapse
No, it would increase battery life due to higher capacity, but not the charging current.
You could resolder a resistor on the phones motherboard, but there is no software way to get around the limit.
Sent from my GT-I9100 using Tapatalk
Try shiyah kernel and voltage control
Sent from my GT-I9100 using XDA App
Makrilli said:
Try shiyah kernel and voltage control
Click to expand...
Click to collapse
Just to clarify so others don't keep spreading it, trying shiyah (sic) kernel with voltage control will not change anything, you are limited to 650mA.
Makrilli said:
Try shiyah kernel and voltage control
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
I looked at that but, apparently, although it shows a 950mA option, the phone still won't draw over 650mA.
veyka said:
You could resolder a resistor on the phones motherboard, but there is no software way to get around the limit.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
So it's hardware limited, how stupid .
My main use for a smartphone is satnav and one that goes flat after 500 miles is about as much use as a chocolate tea pot. I suppose my only option is to turn down the brightness and remember to go back to HTC for my next phone.
veyka said:
You could resolder a resistor on the phones motherboard, but there is no software way to get around the limit.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
So it's hardware limited, how annoying .
My main use for a smartphone is satnav and one that goes flat after 500 miles is about as much use as a chocolate tea pot. I suppose my only option is to turn down the brightness and remember to go back to HTC for my next phone.
gevans35 said:
My main use for a smartphone is satnav and one that goes flat after 500 miles is about as much use as a chocolate tea pot. I suppose my only option is to turn down the brightness and remember to go back to HTC for my next phone.
Click to expand...
Click to collapse
Assuming your car charger is actually supplying 650mA and the phone is still losing charge, you're not entirely without options. For example, you could use a lower brightness (which you already acknowledge), limit the CPU frequency/disable one core or have your sat nav application turn off the screen between instructions.
oinkylicious said:
Assuming your car charger is actually supplying 650mA and the phone is still losing charge, you're not entirely without options. For example, you could use a lower brightness (which you already acknowledge), limit the CPU frequency/disable one core or have your sat nav application turn off the screen between instructions.
Click to expand...
Click to collapse
Thanks, I'll investigate the CPU options, I couldn't live with the screen turning off though.
For the future, I wonder if ICS's better handling of the two cores will reduce consumption.
You can turn mystic up to 650 from 450 which might help with the discharging while using satnav issue.
You would need a custom kernel and voltage control.
Sent from my GT-I9100 using Tapatalk
What is mystic?
veyka said:
You can turn mystic up to 650 from 450 which might help with the discharging while using satnav issue.
You would need a custom kernel and voltage control.
Click to expand...
Click to collapse
gevans35 said:
What is mystic?
Click to expand...
Click to collapse
I presume he meant MISC, which you already clarified shouldn't matter (but wouldn't harm to try, if you're already using a kernel which supports changing these values).
gevans35 said:
Mine is detected as a charger, not MISC or USB, so I get the full 650mA
Click to expand...
Click to collapse
As an additional, newer versions of Siyah kernel allow you to see the charge current.
oinkylicious said:
I presume he meant MISC, which you already clarified shouldn't matter (but wouldn't harm to try, if you're already using a kernel which supports changing these values).
As an additional, newer versions of Siyah kernel allow you to see the charge current.
Click to expand...
Click to collapse
I just downloaded a battery widget app and my car charger (2amp) is definitely recognised as 'AC' which I assume should be 650mA.
I'm using Android 2.3.6, Gingerbread XILA2, Rooted. Would Siyah kernel be worth a try?
Fast charging the battery shortens its life anyway. Slow charges are better, IMO.
I don't mind waiting a few extra minutes or buying an additional battery and cycling them, or charging them externally
donalgodon said:
Fast charging the battery shortens its life anyway. Slow charges are better, IMO.
I don't mind waiting a few extra minutes or buying an additional battery and cycling them, or charging them externally
Click to expand...
Click to collapse
But I need sufficient current to cover my satnav drain plus a bit to charge the battery when I'm driving. I don't mind replacing the battery every six months but pulling off the road to change it is a non starter.
gevans35 said:
Would Siyah kernel be worth a try?
Click to expand...
Click to collapse
It's not likely to help your issue, at least not without playing with a few already mentioned things (like limiting CPU frequency or disabling one core).
Hello, guys. I know this post is awfully long, but please, bear with me
I am fairly new to Sammy, as I just got the S2 (I9100, not some other variant... it's the very original) three days ago. I rooted it, flashed CWM, and already tried a few ROMs. I'm sticking to MIUIv4 (WIUI, actually) for the moment, as I loved having MIUI on my previous devices.
There's just one thing that makes me wanna throw rocks at this phone... and that's not the Super AMOLED+ screen that has stains / ghosting effect... it's the CHARGER.
I believe the charger I'm using is original - it was in the package, so... it can't be a copy, lol. It says it can output 700mA at 5V, which is pretty standard... but it seems like it just doesn't do its job!!!
I've had three HTC devices before, and the HTC charger is just a brick that you plug into the socket, and then plug a USB cable in it (just like Motorola's and Apple's recently). It outputs 1A at 5V.
The Motorola ATRIX I previously owned had a charger that was outputting 850mA at 5.1V. Charging that 1900 mAh beast battery would take just a little over 3 hours!
I no longer own the ATRIX (sold it to get the S2, actually), but I did borrow a HTC charger (with a HTC USB cable) to see if I could charge my S2 faster. Nopes. The charger barely gave the S2 0.5 amps... which is normal, since I hear two pins must be connected in order for the Samsung phone to draw maximum power.
My Galaxy S2 is charging painfully slow with this original charger. I installed Battery Monitor Widget and let it log the battery charging overnight - the log file is attached below this post.
At the very first line of that text file, you can see the charging began. I let the phone turned on, with the screen off, to charge overnight. Wi-Fi, Mobile Data, BT, GPS, Auto-sync was off. It was just in auto 2G/3G mode. That hardly matters!
It looks like the phone is drawing 641mA constantly. It doesn't top 700mA, but that's okay - neither did the HTC phones reach more than 900mA, when the charger was able of 1A output.
It took the SGS2 exactly two hours and 50 minutes to fully charge. Given the fact that the charger outputs 700mA, and the battery is 1650mA, I'd say that's right. A 1900mAh battery was completely charged in 3 hours and something, with a 850mA output charger.
Still, that's painfully slow. I had the HTC EVO 3D, which has a 1730mAh battery. Charging that (@1A) would take little over two and a half hours. I could even browse the web via Wi-Fi or do something else on the phone and the battery would still be completely charged in less than three hours (unless I play a game on 3G with max brightness on, of course).
Also, when the battery was at 1% at lunchtime, I plugged in the charger. I continued to send text messages and browse the web via Wi-Fi (screen brightness was on minimum). The battery level did not rise from 1% even after 5 minutes! You can see that in the battery log. Yes, the phone's battery was almost dead in less than three hours.
Oh, also, the first day I got the phone, after I finished rooting and flashing MIUI and everything... I was playing Dark Legends, over Wi-Fi (screen was at lowest, again). Battery got down to 6%, I plug it into the charger. Ten minutes later, battery was down to 2% ! ! ! So, the charger cannot keep up !
I did my homeworks and did a "bit" of Google searching... it turns out the charger is just as it is. But this is just ridiculous.
-----
I remember seeing something on Twitter several months ago... an article regarding an app that would let you adjust how much power the Galaxy S2 can draw from the charger it's connected to, simply by dragging around a slider. I'm not wrong, I DID see such an article - I just can't find it anymore!
Anyone... any suggestions, please?
Also, please note that I am in Europe, Romania, so I can't just go to a shop and find the most awesome charger that outputs 2A for $5 like you guys can (there, in the US)... It's not really at hand for me, lol.
So, conclusion is the phone can consume more amps during usage than the stock charger can supply.
Either reduce the power usage (lower brightness, disable WiFi/BT) when you're using the phone during charging or get a more powerful charger (although I remember the latest stock ICS kernels don't like charging at a higher voltage than the stock charger supplies, so you'll probably have to install a different kernel which doesn't have this limitation).
Oh, and please stop the non-sense about being in Romania and not having options to buy, the market's full of all kinds of chargers. Get out of the house and search, "lol".
This is not uncommon.
In fact, with my PREVIOUS phone, the SE Mini Pro (the original one), it was actually possible to drain the battery till the phone shut down, even on it's original charger.
With some modified power settings, mostly in CPU voltages, it is quite possible to have the SII charge properly even while in use, but bear in mind, it will take longer to charge if you are using it.
VAXXi said:
So, conclusion is the phone can consume more amps during usage than the stock charger can supply.
Either reduce the power usage (lower brightness, disable WiFi/BT) when you're using the phone during charging or get a more powerful charger (although I remember the latest stock ICS kernels don't like charging at a higher voltage than the stock charger supplies, so you'll probably have to install a different kernel which doesn't have this limitation).
Click to expand...
Click to collapse
Playing Dark Legends, via 3G this time (so the power consumption would be higher, right?), screen at FULL BRIGHTNESS, Bluetooth and GPS activated. Battery Monitor Widget tells me the current being drawn is 641mA. Looks like the phone draws 641mA when charging, ~80% of the time.
The only problem seems to be when the battery level is LOW. Then, no matter what you do, the power level just doesn't rise.
With HTC / Motorola, the power draw was maximum when the battery was at its (almost) lowest level, and would decrease as the battery was filling. With the SGS2, it looks like it draws 640mA from 0% to 70%, THEN it begins to slow down.
VAXXi said:
Oh, and please stop the non-sense about being in Romania and not having options to buy, the market's full of all kinds of chargers. Get out of the house and search, "lol".
Click to expand...
Click to collapse
Oh, but trust me, I have. You know, in our country, even cheap Chinese copies are over-rated. It's hard to find stuff like what they have in the US .
I've seen some sort of a digital charger, so-to-say, which would allow you to set the amperage and voltage that was being outputted. It was able of throwing out anything from .5 to 2 amps, at 3.7 - 5.5V (given your choice). Guess what : friend got it from the States...
You don't see such stuff here, in Romania.
Oh well...
Sideromelane said:
This is not uncommon.
In fact, with my PREVIOUS phone, the SE Mini Pro (the original one), it was actually possible to drain the battery till the phone shut down, even on it's original charger.
With some modified power settings, mostly in CPU voltages, it is quite possible to have the SII charge properly even while in use, but bear in mind, it will take longer to charge if you are using it.
Click to expand...
Click to collapse
On the HTC EVO 3D and Motorola ATRIX, it was yet to be proven whether undervolting the CPU would increase battery life or not. Undervolting as much as 200mV only reduced the ammount of heat that was generated (especially during gaming sessions). Although current = heat... the power consumption didn't seem to change a bit!
I even tried to downclock the CPU to 400 MHz - power draw would still not be sufficient in order for the phone to charge (when the battery level was under 10%). Everything was turned off, light on lowest, CPU pretty low... still going down, lol.
I have also experienced this in the past.... which was rather annoying if I must say however, recently I haven't had this issue, although it still charges quite slowly, it's slightly faster than before. I noticed this difference after I decreased the voltage from the cpu in each step, yes my phone is heavy undervolted thanks to magic config, might want to check that out, but it's still as smooth as ever without a hint of lag props to the hyperdroid team...they are the best in my opinion, I use their rom since the hd2 days recommend their rom to all galaxy s2 users.
Anyway, my point is, I can have my screen in full brightness and still use the phone as is when off charge and it will continue to charge. Also, battery life isn't an issue for me anymore after undervolting, I can live with 15 hours battery life under extreme heavy usage with full screen brightness of 4-5 or more hours of screen on time....and that's with 1650mah battery. I plan to get an official 2000mah battery which will increase it's life more
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
shadyr25 said:
I have also experienced this in the past.... which was rather annoying if I must say however, recently I haven't had this issue, although it still charges quite slowly, it's slightly faster than before. I noticed this difference after I decreased the voltage from the cpu in each step, yes my phone is heavy undervolted thanks to magic config, might want to check that out, but it's still as smooth as ever without a hint of lag props to the hyperdroid team...they are the best in my opinion, I use their rom since the hd2 days recommend their rom to all galaxy s2 users.
Anyway, my point is, I can have my screen in full brightness and still use the phone as is when off charge and it will continue to charge. Also, battery life isn't an issue for me anymore after undervolting, I can live with 15 hours battery life under extreme heavy usage with full screen brightness of 4-5 or more hours of screen on time....and that's with 1650mah battery. I plan to get an official 2000mah battery which will increase it's life more
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Click to expand...
Click to collapse
That's... impressive.
I'm using MIUIv4 (WIUI) wth Siyah v3.2.6.3 kernel. For some reason, if I undervolt even -50mV, the phone freezes :/
Formhault said:
That's... impressive.
I'm using MIUIv4 (WIUI) wth Siyah v3.2.6.3 kernel. For some reason, if I undervolt even -50mV, the phone freezes :/
Click to expand...
Click to collapse
That's.... weird. I thought siyah kernal was more undervolt friendly :/ besides, I read somewhere that not every galaxy s2 can handle undervolting whilst some can. Rather, it could be the kernal too, I use the redpill kernal provided from the hyperdroid team, it's not the best in benchmark wise but what the heck... it doesn't stop to lag, it's extremely fast and responsive, great battery life, undervolt support for further improvements... you won't even notice any slowness compared to high benchmark devices. Red pill kernal is well optimised. I use noop scheduler and conservative governor, it's amazing how redpill handles this. Try it some time. Could solve your problem.
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Formhault said:
The only problem seems to be when the battery level is LOW. Then, no matter what you do, the power level just doesn't rise.
Click to expand...
Click to collapse
Just like your 48x CD burner doesn't write at 48x from start to finish, that's how the charging current is not constant; it depends on the remaining capacity, charging algorithms, etc. You're using a special case and asking too much, the solution has been given already (powerful charger and modified kernel to allow a higher charging current and voltage).
Formhault said:
You don't see such stuff here, in Romania.
Click to expand...
Click to collapse
Yes you do. I got a 1A Energizer charger which really gives 1A for less than 10$. The variable supply you're describing can be found in any proper electronics shop, try "Maica Domnului" street
VAXXi said:
Just like your 48x CD burner doesn't write at 48x from start to finish, that's how the charging current is not constant; it depends on the remaining capacity, charging algorithms, etc. You're using a special case and asking too much, the solution has been given already (powerful charger and modified kernel to allow a higher charging current and voltage).
Click to expand...
Click to collapse
Yeah, I know that. That's exactly what I'm saying. The algorithm is different on the S2, it seems.
On all HTC devices I had, the current draw was at its highest (~900mA) when the battery was near depletion, and as the battery was filling up, the current draw was slowly decreasing. On the S2, it looks like it's the other way around. When the battery is nearly empty (1%), barely 100mA are being drawn. As it fills up, near 10% or so, the current draw remains steady at ~641mA, and decreases only past the 70% point.
Good thing is, the current draw remains steady at 641mA, no matter how much I stress the phone! That's astonishing - the other day, the battery was LEAKING 600mA instead of GETTING 641mA when the simplest tasks were done (no stress, that is), during charging...
Guess the guy who had this phone before me didn't really ever charge up the battery properly He said he had an iPhone charger back at home; I told him "nevermind, keep it".
shadyr25 said:
That's.... weird. I thought siyah kernal was more undervolt friendly :/ besides, I read somewhere that not every galaxy s2 can handle undervolting whilst some can. Rather, it could be the kernal too, I use the redpill kernal provided from the hyperdroid team, it's not the best in benchmark wise but what the heck... it doesn't stop to lag, it's extremely fast and responsive, great battery life, undervolt support for further improvements... you won't even notice any slowness compared to high benchmark devices. Red pill kernal is well optimised. I use noop scheduler and conservative governor, it's amazing how redpill handles this. Try it some time. Could solve your problem.
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Click to expand...
Click to collapse
The benchmarks are simply amazing; even with the CPU downclocked to 800 MHz...
I'll look for that kernel, hope it's MIUIv4-compatible. Thank you!
VAXXi said:
Yes you do. I got a 1A Energizer charger which really gives 1A for less than 10$. The variable supply you're describing can be found in any proper electronics shop, try "Maica Domnului" street
Click to expand...
Click to collapse
Everyone's talking about a specific shop down that street... and I never got to actually go there. Guess I gotta look for it... Was kind of doubting it was much of a big deal.
-----
I thought posts made within a specific time range were supposed to merge... That obviously didn't happen. Sorry for the multi post
Using charger not usb,it takes 3 hours ,is that normal how much time does it take for you guys?If normal any way to decrease time with other charger?
Alucard said:
Using charger not usb,it takes 3 hours ,is that normal how much time does it take for you guys?If normal any way to decrease time with other charger?
Click to expand...
Click to collapse
Its normal.
Sent from my GT-I9100 using Tapatalk 2
corruptionfreeindia said:
Its normal.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
Any way to fix this issue by changing charger or setting in rom?
Alucard said:
Any way to fix this issue by changing charger or setting in rom?
Click to expand...
Click to collapse
NO, u cannot
Since for USB charging its capped at 400mA and with wall charger its capped at 650mA
u can see the video link below for more info
http://www.youtube.com/watch?v=FL71G2YEIHU
Sun90 said:
NO, u cannot
Since for USB charging its capped at 400mA and with wall charger its capped at 650mA
u can see the video link below for more info
http://www.youtube.com/watch?v=FL71G2YEIHU
Click to expand...
Click to collapse
So when plugged in wall charger it uses 650 mah or do i need to use the app on the video to increase the voltage?
Sorry....but I can't believe you posted this..... 3 hours IS pretty damn fast.....my old galaxy W used to take 5 to 6 hours.
A lot of things in this world may well be instant.........phone charging ain't EVER gonna be one of them.........
This might be my S2, or it might be my W...but it's definitely CM
Sun90 said:
NO, u cannot
Since for USB charging its capped at 400mA and with wall charger its capped at 650mA
u can see the video link below for more info
http://www.youtube.com/watch?v=FL71G2YEIHU
Click to expand...
Click to collapse
With stweaks you can let usb charge from 450 to 650mAh.
keithross39 said:
Sorry....but I can't believe you posted this..... 3 hours IS pretty damn fast.....my old galaxy W used to take 5 to 6 hours.
A lot of things in this world may well be instant.........phone charging ain't EVER gonna be one of them.........
This might be my S2, or it might be my W...but it's definitely CM
Click to expand...
Click to collapse
My LG p970 with 1500 mah battery used to do 1 and half hour at the most,and when plugged in i could play heavy games and still it could finish charging,but not with s2,and 3 hours dude its not fast for 1650 mah,but i can live with it,at first i thought my phone was broken so this the reason for this question.
neatrom
Alucard said:
My LG p970 with 1500 mah battery used to do 1 and half hour at the most,and when plugged in i could play heavy games and still it could finish charging,but not with s2,and 3 hours dude its not fast for 1650 mah,but i can live with it,at first i thought my phone was broken so this the reason for this question.
Click to expand...
Click to collapse
2:30 H using neat rom
trying yahowy
I use in my SGS2 battery with 3200 mAh (X-Longer CS-SMI9100DL).
It takes 5H to fully charge.
Alucard said:
Any way to fix this issue by changing charger or setting in rom?
Click to expand...
Click to collapse
Use s4 charger. It has 1amp output current. .
But not recommended though.
Sent from my GT-I9100 using Tapatalk 2
Yes, the charging speed Form S2 is very poor. I don't understand this cause other manufactorers do it better without battery issues...
soeschelz said:
Yes, the charging speed Form S2 is very poor. I don't understand this cause other manufactorers do it better without battery issues...
Click to expand...
Click to collapse
Then buy an ICrap or old BlackBerry and get a swirl... live free with equally fast discharge...
Fast charge is disabled by default (on obvious reasons, google it), but hey... anyone is free to make it work if he can find a proper solution.
Said that, 3 hrs should be more like 2 hours or 2 hours and a a half... but seen OP never stated specs, it's all right.
Fevves said:
Then buy an ICrap or old BlackBerry and get a swirl... live free with equally fast discharge...
Fast charge is disabled by default (on obvious reasons, google it), but hey... anyone is free to make it work if he can find a proper solution.
Said that, 3 hrs should be more like 2 hours or 2 hours and a a half... but seen OP never stated specs, it's all right.
Click to expand...
Click to collapse
Oh, you're very polite :/
In fact, the most other phones charge with ~1A+ and they don't have any big draing issues in common. It doesn't matter which OS they run.
Fevves said:
Then buy an ICrap or old BlackBerry and get a swirl... live free with equally fast discharge...
Fast charge is disabled by default (on obvious reasons, google it), but hey... anyone is free to make it work if he can find a proper solution.
Said that, 3 hrs should be more like 2 hours or 2 hours and a a half... but seen OP never stated specs, it's all right.
Click to expand...
Click to collapse
ill never buy an iphone,s2 does charge really slowly and s3 too,but s4 no,so its a matter of samsungs technology which is slow,plus i agree that battery is good for 1650,i guess ill have to get used to it.Im going to send it to samsung to see if they can change something,like the usb port to handle more voltage,do u guys think its possible?
corruptionfreeindia said:
Use s4 charger. It has 1amp output current. .
But not recommended though.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
Yeap thought of it but i agree i will not risk it,but its frustrating cause im playing gta vice city and it not easy cause battery drains superfast,can i use s2 without a battery connected to charger?
soeschelz said:
Oh, you're very polite :/
In fact, the most other phones charge with ~1A+ and they don't have any big draing issues in common. It doesn't matter which OS they run.
Click to expand...
Click to collapse
Yes I am , thank you, cause the slow charge issue was elaborated and mentioned so many time around XDA but seems no one cares to search and read.
This phone with and with original charger, and AFTER teh update from Gingerbread to ICS/JB is charging as per specs. On Gingerbread there was a flaw that permitted to charge it upto 900-1000 mA but the phone was rather hot, I recall charging mine in an hour and a half or 15-20 minutes more, from 2-3% to 100% back when phone had GingerBread.
Alucard said:
ill never buy an iphone,s2 does charge really slowly and s3 too,but s4 no,so its a matter of samsungs technology which is slow,plus i agree that battery is good for 1650,i guess ill have to get used to it.Im going to send it to samsung to see if they can change something,like the usb port to handle more voltage,do u guys think its possible?
Click to expand...
Click to collapse
Nope, they won't do anything, but you can try all along if it's free service.
Alucard said:
Yeap thought of it but i agree i will not risk it,but its frustrating cause im playing gta vice city and it not easy cause battery drains superfast,can i use s2 without a battery connected to charger?
Click to expand...
Click to collapse
You can use 2.1A output chargers too, it is simply not going to draw all that but you might get the better on the go recharging while you're using the phone with heavy apps. Just think of the dual car chargers - they have both 1A (phone) and 2.1A (tablet) output. SatNav on 1A is zeroing or still draining your phone battery, while 2A can slowly charge it on the go.
You just give it a needed juice and if the discharge is so greater then recharge, there's not much you can do about it.
Call it a flaw, but Samsung did it cause of longevity of their batteries and li-ion technology.
That is why I indicated iCrap and BB - their fast charge is provoking rather fast discharge too cause the battery will not hold it. I have colleagues with BB who're charging in an hour but get their phones depleted in 3 hours of usage... I wouldn't want that from my S2 for sure. :good:
GreekBlood said:
With stweaks you can let usb charge from 450 to 650mAh.
Click to expand...
Click to collapse
But it risky for USB port!
corruptionfreeindia said:
Use s4 charger. It has 1amp output current. .
But not recommended though.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
It doesn't matter what the output current of the charger is... the phone will only draw 650mA.
The charger I got with my S2 delivers 1A but my phone only draws 650mA. Actually the hardware doesn't support it.
IMO, 3hrs is pretty fast for a full charge.
Edit: Just noticed that Fevves already mentioned all that...
adressing sfafrorn
Some kernels have the Option to change the charge rate but even at 650mA the phone will get very hot if you are doing something on it while charging
Sandm4n is right :good:
Isn't Fast Charging Bad For The Battery?
That would depend on the battery's C rating. Charging at higher rates doesn't necessarily cause damage. There are plenty of articles on charging lithium ion/poly cells out there.
In my previous S7 Edge , the battery lost plenty of juice in just one year of usage ( i was using wireless charging only). Then i sent it to samsung warranty and they replace battery. Tried to find something about if could be the wireless charging that damaged the battery and found none that supported that theory.
Now, with the S8, i´m using the provided charger and cable only (Just to be safe).
Vogal said:
In my previous S7 Edge , the battery lost plenty of juice in just one year of usage ( i was using wireless charging only). Then i sent it to samsung warranty and they replace battery. Tried to find something about if could be the wireless charging that damaged the battery and found none that supported that theory.
Now, with the S8, i´m using the provided charger and cable only (Just to be safe).
Click to expand...
Click to collapse
Wireless is different due to the losses in the induction, creating heat, which does have some affect. But there are a lot of variables as to why your battery performance may have degraded.
LeoNote4 said:
Isn't Fast Charging Bad For The Battery?
Click to expand...
Click to collapse
Are you a battery engineer/chemist?
peachpuff said:
Are you a battery engineer/chemist?
Click to expand...
Click to collapse
Battery President.
?????
Gesendet von meinem SM-G950F mit Tapatalk
LeoNote4 said:
Battery President.
Click to expand...
Click to collapse
Right... it seems every day someone thinks they know more than engineers in that field, battery is getting hot so it must be bad. Yet every year qualcomm and others improve quick charging for even faster charging, so unless someone actually knows something these threads should just stop.
peachpuff said:
Right... it seems every day someone thinks they know more than engineers in that field, battery is getting hot so it must be bad. Yet every year qualcomm and others improve quick charging for even faster charging, so unless someone actually knows something these threads should just stop.
Click to expand...
Click to collapse
I think what's going on here is someone doesn't know so he is asking a question.
LeoNote4 said:
I think what's going on here is someone doesn't know so he is asking a question.
Click to expand...
Click to collapse
Why would you assume its bad for the battery in the first place? Just because it gets hot? The cpu also gets hot when gaming so i should stop gaming? Recording 4k videos also heats up the phone so i should stop recording 4k video's? Constantly downloading will probably heat up the modem too so i should stop downloading? If something is built into the phone why would you assume its bad for the phone?
peachpuff said:
Why would you assume its bad for the battery in the first place?
Click to expand...
Click to collapse
I didn't.
peachpuff said:
Just because it gets hot?
Click to expand...
Click to collapse
What gets hot? Who said anything about hot?
Hey, don't take it badly, he is just asking. I remember old batteries (for example ni-mh) if you charge it at a high current they use to live less than if you charged them at a slow one (i remember using rechargable batteries of this time for my wii control and i could test it with how long they lasted).
I think the new Li-ion (or better) batteries nowadays don't suffer from this, so you should be safe about them. They have a natural capacity loss thats isnt affected about the rest of the things. You should anyway check for faulty chargers or your battery life, remember all the test samsung makes are with their original hardware.
Regards!
peachpuff said:
Why would you assume its bad for the battery in the first place? Just because it gets hot? The cpu also gets hot when gaming so i should stop gaming? Recording 4k videos also heats up the phone so i should stop recording 4k video's? Constantly downloading will probably heat up the modem too so i should stop downloading? If something is built into the phone why would you assume its bad for the phone?
Click to expand...
Click to collapse
This is someone not knowing what they're taking about trying to talk down on someone else.
Anyways heat has always been detrimental to battery health which is why samsung fast wireless chargers have fans built in to keep the heat low. Along with this the phone will prevent charging if it passes a certain heat threshold I believe 40c iirc and also the phone uses adaptive charging to prevent over heating of the phone with the included fast charger and charging circuit design. As long as the phone continues to regulate the charge coming into the phone fast charging shouldn't hurt. Of course with fast charging you go through battery cycles faster but this is just because you can charge it a lot more times than with regular charging.
My personal experience:
- 2 years of fast charging = battery drain between 100 and 90 very much noticable
- charging over night causes more damage than fast charging