Guys I bought one Samsung Extended battery kit (2000mHa - genuine) last week and it worked a charm, noticed a considerable increase in battery life when compared to the stock battery 1650mha.
However on the weekend my Galaxy ran flat and now charging the phone, the phone starts charging, boots up, Samsung flash screen appears, then loads the main screen, stays there for 5 - 10 seconds, then phone powers down and turns off
I have tried several chargers, Blackberry (700ma) and the original Galaxy charger (USA charger - I live in Australia). I have read a few reviews that suggests I may need a higher output charger, maybe a 800ma or 1000ma charger? Would this be correct?
If the phone is still got charger, say 30% battery remaining, and I charge it using a Blackberry or Samsung charger, the phone charges fine, if its completely flat, it won't charge at all.
The phone has not been rooted and I am also running the 2000mHa extended battery mentioned in this post.
Any ideas to why the phone boots up, stays on for 5 seconds and turns off?
Info on charging rates for batteries:
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Li-Po (cell phone, RC car) batteries are pretty unstable when compared to NiMh/NiCd (AAs, reg Automobile) batteries.
When Li-Po's first started coming into the Remote Control Car Hobby, the big thing I was told to watch out for, and follow to a T was the charging and discharging rates, because if you neglected them, that's when the cells would swell and possibly burst into flames.
Rule of thumb is never charge at more than a 1C rate or exceed the batteries voltage, meaning if it's a 2000mAh battery, don't charge at more than 2.0A, if it's a 1750mAh battery, no more than 1.75A, and if it is a 1355mAh battery, no more than 1.355A and so on and so on.
For our stock, single cell(3.7V) Li-Po 1850mAh battery, the perfect, ideal charge rate would be no higher than 1.85A at 3.7V.
It blows me away that the stock charger is 5.0V, but Samsung obviously approved it so...Whatever.
I can almost guarantee you that our phones would never discharge at more than the batteries max rating.
To sum this up - don't charge it at more than 1.85A and 5.0 Volts and you should be fine. If you can use a charger with les voltage than 5.0V, I would use that one...
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One its a question in the wrong forum .
When flat does it not charge with phone powered off as normal charging practice for a dead phone .
jje
I have noticed this.
My theory is the phone does not charge while booting. So what little charge you had put in, would only be enough to boot, then by the time it can fully boot to charge again, it doesn't have enough power to stay up so it boots off.
If you left the charger on with the phone off for 10 min, should have enough to power up and stay powered. Try that.
Well I bought the Galaxy S3 on the first day of the UK launch and depleted the battery to 0% then charged with the original 1 Amp charger from 0%. I had noticed that this takes a very very long time, around 8 hours. The battery life after charging however is substantial and very adequate.
On the second charge after depletion once again, I decided to use a Griffin 2.1 Amp charger which I had used to charge the hefty Galaxy note with. The Galaxy S3 charges at a much rapid rate and takes around 2-3 hours to reach 100% from 0%. However I have noticed that the battery life depletes a bit faster, Is this due to my imagination or is a 2.1 Amp charger not suitable for this phone as it was with the tablet-like Galaxy note.
Also note that I tried to charge my HTC one X with the 2.1 Amp charger and it charge very slowly, while the original HTC charger has a much lower ampage than 1 Amp
Hmm I have been using my galaxy s charger 0.5amp and it has been charging pretty slowly but seems to deplete faster.
I have been actively using for 50min on wifi now and 85% left. Which seems a bit quick for me. I will try charging with the standard 1amp tonight and see.
Now fast are you depleting at?
I measure my battery life by checking the screen on time just before the death of the charge which was 5 hours on the original charger, with the quick charger its 4 hours. My Galaxy note has no change in battery life weather you any ampere chargers. Also the general battery percentage seems to run low faster anyway on the galaxy s3 using the fast charger.
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I shall try the standard 1 amp charger the next time my phone depletes
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Just wondering, since the S2 had a limit of 650mA for charging, does this apply to the S3? You guys make it sound like it charges slow as well...
Galaxy s2 does charge very slow for me aswell. Compared to htc phones the Galaxy s 2 charges painfully slowly. Now I regularly use the 2 amp charger on my galaxy s3 and have seen a huge improvement in charging speeds. It charges at around 2% per minute and still lasts around 4 hours of screen time for a full charge.
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I noticed that I can only charge fast using original charger. While charger with shorted usb data + & - (ie. htc 1A charger) will not activate fast charging.
You can verify by going into *#*#4636#*#*, Battery, using ori charger will show AC while HTC charger will show USB
I think samsung made some changes to the microUSB pinout
xifer said:
You can verify by going into *#*#4636#*#*, Battery, using ori charger will show AC while HTC charger will show USB
I think samsung made some changes to the microUSB pinout
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Thanx for the "shortcode". Where does one find those?
Also from reading about the MHL to HDMI cable from older devices not wotking, it does in fact seem that Samsung have changed the microUSB pinouts (although my Nokia 1.2A charger shows AC in that battery "menu").
Mine charges from about 10% to full in about two and a half hours, using the charger provided in the box.
My s2 came with a 0.7amp charger and took about 2.5 hours. My s3 came with a 1amp charger and takes about the same. Charges to 80% in no time and then slows down for the later part of the charge
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A battery isn't like a fuel tank which you simply fill up through the hose until it's full.
Due to physical and chemical reasons, a nearly-full battery takes a lot longer to fill by a certain percent since it simply can't store the energy quickly enough.
Additionally, deep-discharged batteries often start with a slower charging speed (and then cranked up) to keep the battery from dying too soon and/or not being able to reach full capacity.
is the Nokia 1.2A charger ok to use with the samsung G3 as i got one of these spare and would prefer use it if so as the usb is way to short to reach from my desk up and around the back.
but the Nokia 1.2A charger lead is more than long enough
Just to check with all of you, i've been told that it is best not to charge your phone or any other handheld device IF the battery is not at a really low rate, at least not till your device actually prompts you to charge. They were saying that this would cause the battery life to be shortened. But at times, I need to make sure that i have enough battery to last me for a few more hours before i knock off from work, i would just charge the phone (battery at 25-30%) even before it prompts me to. Is it alright to do that often?
2ndly, at times when i stream videos on my phone for many hours, the battery would definitely drain fast and i would need to charge my phone at least 2-3 times a day. Is it alright for me to do that or am i "abusing" it? =X
Appreciate all your advises...Thanks in advance~
so any update on if using the nokia charger is ok with it being 200mah more than the standard 1A charger since it has longer lead.
or there is the 700mah samsung charger from my old S2
speaker5 said:
Well I bought the Galaxy S3 on the first day of the UK launch and depleted the battery to 0% then charged with the original 1 Amp charger from 0%. I had noticed that this takes a very very long time, around 8 hours. The battery life after charging however is substantial and very adequate.
On the second charge after depletion once again, I decided to use a Griffin 2.1 Amp charger which I had used to charge the hefty Galaxy note with.
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neko0nna said:
Just to check with all of you, i've been told that it is best not to charge your phone or any other handheld device IF the battery is not at a really low rate, at least not till your device actually prompts you to charge. They were saying that this would cause the battery life to be shortened. But at times, I need to make sure that i have enough battery to last me for a few more hours before i knock off from work, i would just charge the phone (battery at 25-30%) even before it prompts me to. Is it alright to do that often?
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I don't know why this misconception still lives on; lithium ion batteries require no priming on first use. The WORST thing you can do with a li-ion battery is to fully deplete it before recharging. It is much better to top it off whenever possible; having said that leaving it turned on, on the charger once it is full is also not the best thing (though nowhere near as bad as depleting it fully).
I believe since this phone has a removable battery with external charger the best thing you can do is always charge your battery in the external charger and just switch out the battery when it gets to around 10%.
Nek0onna you should charge your phone whenever it's not full and you have a handy charger.
http://batteryuniversity.com/learn/article/how_to_charge_when_to_charge_table
what about using different chargers though as i have said yet not answered yet,
i got a samsung s2 700mah charger and a nokia 1200mah charger which will work the best for the battery etc
the 1A included one the usb lead is to short for use behind a desk
jjwerrett said:
what about using different chargers though as i have said yet not answered yet,
i got a samsung s2 700mah charger and a nokia 1200mah charger which will work the best for the battery etc
the 1A included one the usb lead is to short for use behind a desk
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Yeah its fine, you can use it.
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Can anybody check what the max charge rate is on this device with a battery monitor app? I have handfuls of 1A and a couple 2.1A chargers. I'd really like to charge at twice the rate if possible but not all devices support such rapid charging (kernel limits and such). Just curious before I buy one Thanks!
Even if Samsung slipped up and allowed a 2A charge i'd never want to try it, because tablet and laptop batteries are rated and manufactured for a higher current charge/discharge and most phone batteries would heat and swell up and possibly explode.
my HP touchpad charges with a 1A charger and it would be nice to use that with my sgs3.
Can anybody please check what the max charge rate is on this device
Hi, is it possible to make the phone charge whilst the screen is on?
plugged in charger at 37% battery and drove with navigation for 6 hours and when i arrived it was still 37%, would of been nice to charge it at the same time.
On return journey i kept screen off for the last hour so it would charge.
Thank you
It does charge even when the screen is on. I charge it while web browsing and it goes upto 100. You're using a navigation app which is processor extensive(as well as data) so that's why you battery neither dropped nor increased.
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if it wasn't charging your phone would have been flat after an hour, instead you got six hours of satnav and some more for later.
You might find that you can get a bit more if you use a different car charger with a higher ampage, but breaking even is to be expected with SatNav.
Thanks, thats a shame as my SIi charged with navigation on.
I understand its powering the phone but not charging the battery, i use a 2amp charger same as i used for the SIi
USB car chargers are never as good as the wall chargers for charging your phone when the screen is on. I have tried 1 amp and 2 amp car chargers of different brands and like you, if my percentage is say 38% or whatever with screen on, then it will take close to an hour just to put 1% charge. Plug it into wall charger with screen on and it charges much quicker.
When I first got my Lumia I noticed that it charged slowly, not that I'm horribly impatient and can't wait for a 2000mAh battery to charge slowly, but like 7+ then 8+ hours on the first two days.
I thought this to be odd, so I stopped using my included Nokia wired charger and switched to the one for my HTC Titan and decided to record the charge time with an app. I did not receive a charging plate because I bought it off contract from ATT and their offer is only valid if you do and the free wireless charging plate promotion is only good within the UK. :/
Every night since then, to go from 0% to 100% it takes about 2 hours and 40 minutes. This certainly isn't bad for me, I'm simply curious about wired charge times others are getting.
How long does it take your device to charge fully?
What about on the wireless plate?
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Using the provided charger it is about 2.5 hours for me also
it takes me 1.5 hours with provider charger and an energizer QI charging pad
zok-star said:
it takes me 1.5 hours with provider charger and an energizer QI charging pad
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From 0% to full?
It definitely takes no more than a few hours for me on the wireless pad. I haven't gone all the way down to full drain yet, I think the least juice I've had left would be around 15%.
I have had my g3 for about 2 months now and the last 2 days i realise that it barely charges. I usually leave my phone overnight and its always at 100% in the morning but 2 days ago i plugged it in at about 15% at 12am and by 9am it was only at 54%. I thought it was really strange but didnt think much of it i took out the battery put it back in and put it to charge again. In 3 hours it was only at 70%. I realised there was something wrong but i couldnt figure out what was causing the problem so i let the battery emptey and tried charging again. Again the charging was extremley slow. So i took my friends charger and it was full in an hour or so. This was a relif knowing it wasent my phone that was the problem. So i decided to see what the problem was i took his usb cable (which was also original) and plugged it into my charger and it charged quickly but when i plug in my cable its slow w even on his charger. Does anyone know whats going on?
I've never had good charging in this phone. Sometimes its super fast other times it barely charges if the screen is on. I have the damn thing plugged in and just saw it drop a percent. Charging port is to blame IMO. Its a piece of ****.
Had the same issue with my 4 months old LG G3. Different cables didn't make a change, original LG Charger was the problem - when charging on external battery it was always fast, when charging on my genuine Nvidia Shield charger it was always fast. So i decided to buy a different charger (i-tec USB Power Charger 2 Port) and also new cable (Wsken X-Cable) and no longer any problems...