just recently bought an otter box magsafe wireless charge because have one of the magsafe rings on my case. When charging WITHOUT THE CASE on and having the phone just sitting on the charger, it showed in Ampere that my phone's battery was reaching 105 when charging at 7.5W in just a few minutes (it started out at 80). I pulled the phone off at the point since that seemed way to hot. I also tried to charge with the case on with the same issue, only the wireless charger got way hotter due to the magnet on the back. Is it normal for the phone to get that hot when charging at those rates wirelessly? For reference this was the charger had got since it was rated for Ql EPP: https://www.otterbox.com/en-us/magsafe-charging-pad-for-magsafe/charging-pad-magsafe.html
What's the ambient temperature in the room?
105F is charge disable range; keep it no higher than 103F, under 100F is better.
Some heat is needed for charging to work as intended as it's an electrochemical reaction.
Li charging is actually a endothermic reaction but internal battery resistance negates this phenomenon.
Optimum battery start charge temp in 82F.
Use a damp microfiber cloth and/or fan to cool if needed as it approaches 99F. High temperatures and past 85% charges burn up Li batteries fast...
blackhawk said:
What's the ambient temperature in the room?
105F is charge disable range; keep it no higher than 103F, under 100F is better.
Some heat is needed for charging to work as intended as it's an electrochemical reaction.
Li charging is actually a endothermic reaction but internal battery resistance negates this phenomenon.
Optimum battery start charge temp in 82F.
Use a damp microfiber cloth and/or fan to cool if needed as it approaches 99F. High temperatures and past 85% charges burn up Li batteries fast...
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Thanks for the information, my room temp is around 75 F. I was thinking about returning the wireless charger as it was doing that in a room that was around 70 aswell.
aaaafireball said:
Thanks for the information, my room temp is around 75 F. I was thinking about returning the wireless charger as it was doing that in a room that was around 70 aswell.
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That maybe normal for that device but that's not a reasonable trade off. I can fast charge and easily stay in 80-90's at 75F ambient throughout the charge cycle.
Go for cable charging. C ports generally have an insanely high cycle/long service life. Not like the older micro jacks. The C ports exceed the Apple Lightspeed jack lifespan too.
A minimal battery start charge temp of 72F is recommended to avoid the possibility of Li plating which will permanently degrade the battery if it occurs.
I'd say that 105F (40c) is on the high side of normal for wireless charging. Wireless charging tends to generate more heat than charging through a cable does because of the heat generated by the inductive coils. If you have the phone in a case that makes it even worse, as it reduces the efficiency of the wireless link and holds in heat. IMHO, wirless charging degrades the battery faster than proper wired charging.
Related
Hi guys,
i want to ask - my phone charger has got these parameters -
input : 100-240VAC 50-60Hz 140mA
output : 5.0VDC 850mA
battery parameters :
BST-38
970mAh 3.6Wh
isn´t the charger too strong for the battery ?
charging my battery to 100% takes about an hour,sometimes less.
after charging the battery is quite hot.after 5-10 minutes the battery gets down to 80%, and it is stable from 80%.
i am charging just via USB now, because of i think that the charger is too strong and i think it can reduce battery life...?
what do you think ?
Yeah, it is strange.
The battery drains pretty fast after charging to 100% but later it is stable. Although I didn't notice that battery is hot, I think that charger charges battery too fast which is not good for battery IMO.
Mekki99 said:
Yeah, it is strange.
The battery drains pretty fast after charging to 100% but later it is stable. Although I didn't notice that battery is hot, I think that charger charges battery too fast which is not good for battery IMO.
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No, its not charging too fast. Lipoly batteries have pretty tight specifications and the phone switches the voltage itself, for terms of compatibility a usb voltage is used (so less hardware is needed to step voltages from different sources). It also means you can charge from your pc without having a bypass cable like older model phones.
The mA output of the charger doesnt really matter. A high mA means the voltage will be more stable where as a low mA supply could cause undesirable voltage fluctuations.
A lipoly battery cannot be slow charged or trickle charged, the chemistry doesnt work that way. Slow charging could actually cause the battery to explode or in the very least make its performance poorer.
The battery appears to drain quickly in the first 10% but its an illusion caused by the software on the phone which measures the mAh drop. A lipoly battery may discharge from 1200mA to 1000mA in 10 mins and reach a plateau where is holds 900-1000mA for several hours. All that is required is to reset the battery stats so the phone can generate a new profile over several recharge cycles.
As I said, lipoly charge until near capacity and stop. They dont trickle charge, the charging circuit actually switches off. Those people who leave their phones plugged in 8 hours overnight do it no favours as it justs cycles the charger on and off, this could actually skew the battery stats giving a false reading in the first 10%.
The best thing is to charge until full and then remove from the charger, you can always charge it again in the morning before you go out to boost the %. For the best battery life you should maintain a charge above half as this keeps the chemistry from breaking down. Never ever let it go flat! When the phone registers 0% its not, its a safety mechanism and it will still have above half the rated mAh. Charge a dead lipoly and it will explode violently.
Using alternative charging methods of a lipoly is VERY dangerous. People have lost houses or even their lives by fiddling with them. They are not a forgiving as lion, nimh or nicad. With that said lipoly are cheap, reliable, have a small form factor and offer a high output in comparison.
The best device for charging the battery is the phone charger as it has the highest mA and most stable voltage. The PC comes second as most are only rated 500mA and can have voltage fluctuations in the range of 10% or more. Third... Nothing, there is no third - only flames and misery.
Sent from my U20i using Tapatalk
hi guys, just wanted to share a very handy device i have come across that i really like. I have an extra battery and cradle, however i dont trust the charging capabilities of the cradle once it reaches full charge. I know the device itself will slow down and trickle charge once it reaches full capacity, but in the cradle im afraid of overcharging the battery. anyhow, i began looking for a timing device to prevent this. I came across this item
http://www.amazon.com/Belkin-Conser...=1421085461&sr=1-1&keywords=belkin+timer+plug
it has a half hour setting, a 3 hour setting, or a 6 hour setting. i began to find myself using this, not only for the cradle, but when i go to bed at night. i connect it to my phone. 3 hour charge, then it shuts off. im surprised these arent more prevalent. in fact, belkin was the only one i could find, (short of those xmas light dial timers lol). let me know what you think
I've been using the cradle and extra battery for a while now. No issues. I swap it out daily(well until I got my PMA sticker)
Even before then, I noticed no issue with poor battery performance or life.
Here's some helpful info from Battery University website:
Simple Guidelines for Charging Lithium-based Batteries
A portable device should be turned off while charging. This allows the battery to reach the threshold voltage unhindered and reflects the correct saturation current responsible to terminate the charge. A parasitic load confuses the charger.
Charge at a moderate temperature. Do not charge below freezing.
Lithium-ion does not need to be fully charged; a partial charge is better.
Chargers use different methods for “ready” indication. The light signal may not always indicate a full charge.
Discontinue using charger and/or battery if the battery gets excessively warm.
Before prolonged storage, apply some charge to bring the pack to about half charge.
Over-discharged batteries can be “boosted” to life again. Discard pack if the voltage does not rise to a normal level within a minute while on boost.
Go here for more detailed info: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
My g5 gets pretty hot(40-45°C/104-113° F) while fast charging with QC 3.0 charger,is this normal or am I just being paranoid?
I think if android gets to hot it automatically shuts down at 150 f I think? 70-90 seems like the normal temp maybe more or less depending on what your doing. I would imagine it be on the higher side while charging. What app you use to monitor temp of phone while charging? I will test mine and report back results.
zee360 said:
My g5 gets pretty hot(40-45°C/104-113° F) while fast charging with QC 3.0 charger,is this normal or am I just being paranoid?
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That sounds normal if you have the display on or have a demandingly busy/weak WiFi/LTE signal while charging.
Also note you will get throttled charging speed the warmer it gets - the system has several monitors on-board to protect from getting too hot. You can see what the system settings for temperatures are in root > system > etc > thermal-engine-8996.conf.
I attached a screenshot of some relevant settings from that file. The thresholds are degrees Celsius; you only get optimum charging speed with display off and temperatures below 42 °C. (Always-On Display setting doesn't seem to affect the "LCD-On-Monitor" for this purpose.) Temperatures 45°C and below are equivalent to 1 amp charging - slower but still decent. Any higher and significantly slow throttling occurs.
As a side note, you can physically verify this kind of info with an in-line "USB power monitor" device. It sits between your charger and cable and displays the volts and amps for you. Usually costs $10-$20 USD. Make sure it supports at least 9 volts and 4 amps to monitor QC 3.0. (Mine has a range of 3-20V and 0-4A.) Handy for figuring out if your charger or cables may be faulty and verifying charge rates.
Nick216ohio said:
I think if android gets to hot it automatically shuts down at 150 f I think? 70-90 seems like the normal temp maybe more or less depending on what your doing. I would imagine it be on the higher side while charging. What app you use to monitor temp of phone while charging? I will test mine and report back results.
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you can improve the temperatures if you tear down the phone and apply mx4 in the cpu and ram, 10/15c of improvement at least. the g5 have ****y thermal pad, and cooling sistem.
Nick216ohio said:
I think if android gets to hot it automatically shuts down at 150 f I think? 70-90 seems like the normal temp maybe more or less depending on what your doing. I would imagine it be on the higher side while charging. What app you use to monitor temp of phone while charging? I will test mine and report back results.
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Sorry for late reply,I am using accu battery which shows complete statistics.Anyway can you please tell me whether it will cause damage or not to my phone? Touching the phone while it's charging and screened off feels really hot.
PhantasmRezound said:
That sounds normal if you have the display on or have a demandingly busy/weak WiFi/LTE signal while charging.
Also note you will get throttled charging speed the warmer it gets - the system has several monitors on-board to protect from getting too hot. You can see what the system settings for temperatures are in root > system > etc > thermal-engine-8996.conf.
I attached a screenshot of some relevant settings from that file. The thresholds are degrees Celsius; you only get optimum charging speed with display off and temperatures below 42 °C. (Always-On Display setting doesn't seem to affect the "LCD-On-Monitor" for this purpose.) Temperatures 45°C and below are equivalent to 1 amp charging - slower but still decent. Any higher and significantly slow throttling occurs.
As a side note, you can physically verify this kind of info with an in-line "USB power monitor" device. It sits between your charger and cable and displays the volts and amps for you. Usually costs $10-$20 USD. Make sure it supports at least 9 volts and 4 amps to monitor QC 3.0. (Mine has a range of 3-20V and 0-4A.) Handy for figuring out if your charger or cables may be faulty and verifying charge rates.
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My screen is off and its averagely arround 42-43°C but it's still charging at maximum speed i.e around 2900 mA and could you please tell me that all those temperature monitors which show live temperature are showing CPU or battery temperature? Because if it's battery it's written that the temperature shouldn't go above 40 and since it's going,wouldn't that be dangerous?
zee360 said:
My screen is off and its averagely arround 42-43°C but it's still charging at maximum speed i.e around 2900 mA and could you please tell me that all those temperature monitors which show live temperature are showing CPU or battery temperature? Because if it's battery it's written that the temperature shouldn't go above 40 and since it's going,wouldn't that be dangerous?
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"Li ion batteries offer reasonably good charging performance at cooler temperatures and allow fast-charging in a temperature bandwidth of 5 to 45°C (41 to 113°F)." The battery can charge between 0 and 5°C and above 45°C but it will be reduced speed.
The discharge temperature range is "–20°C to 60°C (–4°F to 140°F)"
http://batteryuniversity.com/learn/article/charging_at_high_and_low_temperatures
Anecdotally I've had my HTC Rezound battery abused many times with charging (slowly) at or above 45°C. One night I even had it around 65°C when I fell asleep with it on a faulty charger *and* thermal safety on the OS disabled. After many cycles and abuses it had a very slight bulge and maybe 50% original capacity. Needless to say I bought a new battery, but it shows the limits in a proper li-ion are well above the charging/discharging temperatures.
You should only worry about performance degradation above 45°C and not approaching anything "dangerous" until perhaps north of 60°C.
I'm charging my G5 right now and using AccuBattery app as well, first couple of minutes I'm at 34% and 40°C with screen off which is in line with your results. I'd call it warm but not alarmingly hot. I'll test more charges on G5 by tomorrow.
To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Sony Xperia X Compact can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
Sometimes it is superfast and sometimes its normal!!
I have a charger with QC 3.0 and it charges with normal speed :/
It's reasonably quick with a quick charge charger. About an hour and a half for a full charge. But can get nearly half in half an hour.
I use a Choetech 55W QC 3.0 USB-C charging station along with the same brand cables, and Anker cables. There are a lot of bad cables out there so you have to watch what you buy. I made sure these were certified because I didn't want to fry this device, or other devices hooked up to the XC (there's that one Google developer guy who tests them).
It can charge in under two hours and the phone's battery gives off quite a lot of heat as a result when it's drawing a proper high load - which can't possibly be good for it in the long-term. Is the battery still going to be good after a whole year of use? Same high heat output with a Samsung charger+cable (same brand respectively), so it's neither the charger or cable causing it, just a very warm battery.
Would not recommend sleeping with your device if it's hooked up to a QC outlet - needs to vent that heat -- if you roll over onto it, bad things might happen.
1% at 77~78% is 2:19.9s
Keep in mind, that by design, a battery will not maintain a constant high current -- rather -- drops off slowly as it nears capacity (safe charging), so using %/min. is not an accurate gauge in charge time. So this %/min. will be lower when the battery is at 1~30% than +30~100%. Charge circuits never go by percentage either, but by voltage. An accurate reading would be on a DC volt meter bench.
Shenanigans and errata: My phone stays at 100% for a while after a full charge compared to when it goes down from 99%, so this is not an accurate method to test "full" and "empty" states.
Hi
Just bought a GT Neo 2 but didn't get the Realme 65W charger. I do have a Samsung EP-'T4510 USB-C Quick Charger 45W + USB-C Cable.
It's obviously not going to charge the phone as fast as an original 65W charger does but it's not charging as fast as I'd expect. Plugged it in earlier at 49% and it was at 91% 40 minutes later.
So what affects charging time?
Charging set up as follows:
1) Using extension lead
2) Using adapter to convert 2 pin EU charger to UK 3 pin
3) Samsung T4510 (45W) and the cable that came with the T4510
Do the extension lead or adapter affect charging time? Also does the cable affect it? Do fast chargers have to be used with a specific type of cable?
The charger/cable has to support the charging protocol of the phone or it will only slow charge.
Best to use a OEM brick/cable no longer than 3 feet.
Battery temperature needs to be high enough at beginning of the charging cycle for fast charging to engage. Minimum 72F, but 82-90F is best.
Fast charging may engage below 72F but Li plating becomes likely. Below about 55F fast charging will likely be disabled.
Above about 103F or about 80% capacity fast charging with be ramped down or disabled.
If screen is on, fast charging is disabled.
A battery fault will also disable it or cause erratic fast charging ie a battery failure.
blackhawk said:
The charger/cable has to support the charging protocol of the phone or it will only slow charge.
Best to use a OEM brick/cable no longer than 3 feet.
Battery temperature needs to be high enough at beginning of the charging cycle for fast charging to engage. Minimum 72F, but 82-90F is best.
Fast charging may engage below 72F but Li plating becomes likely. Below about 55F fast charging will likely be disabled.
Above about 103F or about 80% capacity fast charging with be ramped down or disabled.
If screen is on, fast charging is disabled.
A battery fault will also disable it or cause erratic fast charging ie a battery failure.
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Thanks for that.
G1032 said:
Thanks for that.
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Sorry @blackhawk
One more question if you don't mind. Will charging the GT Neo 2 with the Samsung charger damage or reduce the lifespan of the Realme battery?
G1032 said:
Sorry @blackhawk
One more question if you don't mind. Will charging the GT Neo 2 with the Samsung charger damage or reduce the lifespan of the Realme battery?
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Fast charging produces more heat therefore will reduce the lifespan somewhat.
On my heavily used Note 10+ I now replace the battery every year or so to help prevent a battery failure, routine maintenance.
The charging curve is controlled by the phone not the charger. The charging curve should be near identical if both bricks supple the required peak voltage/amps and the phone power controller can communicate with the brick.
Thank you kindly. Much appreciated.
G1032 said:
Thank you kindly. Much appreciated.
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You're welcome. Play with it to see how it works.
Start the charge at about the same temperature then time how long it takes to gain 1 or 2% without turning on the main display. Watch when it ramps down during the charge cycle. It will vary but I see 2%@minute sometimes a little faster at the peak fast charging rate on the N10+.
To extent battery life limit discharge to 30% and top charge to 80%. Li's like frequent midrange power cycling; it extents their totals full charge cycles many fold. A 40-67% usage range is near ideal. Limit the current draw; higher current usage stresses the battery more as does back to back discharge/recharge etc cycles with no rest period.
That's one reason it's just easier to replace the battery. When an Li reaches 80% of its original capacity it's considered degraded and has reached the end of its useful service life. It should be replaced. Degraded Li's are more likely to fail which can seriously damage the device.
Any battery swelling is a failure, replace immediately.
blackhawk said:
You're welcome. Play with it to see how it works.
Start the charge at about the same temperature then time how long it takes to gain 1 or 2% without turning on the main display. Watch when it ramps down during the charge cycle. It will vary but I see 2%@minute sometimes a little faster at the peak fast charging rate on the N10+.
To extent battery life limit discharge to 30% and top charge to 80%. Li's like frequent midrange power cycling; it extents their totals full charge cycles many fold. A 40-67% usage range is near ideal. Limit the current draw; higher current usage stresses the battery more as does back to back discharge/recharge etc cycles with no rest period.
That's one reason it's just easier to replace the battery. When an Li reaches 80% of its original capacity it's considered degraded and has reached the end of its useful service life. It should be replaced. Degraded Li's are more likely to fail which can seriously damage the device.
Any battery swelling is a failure, replace immediately.
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That's all very interesting. I have often read about the 30 - 80 range. I used to own a Huawei P9 and always charged to 100 and that battery didn't last more than 2 years. Last phone was an A70 and that'll be 3 years old in June. Started getting random reboots recently and a quick Google said that's most likely down to the beginning of a battery failure. So just got this GT Neo "as new". It was obviously sent back to the online store by original purchaser minus the charger (replaced with a 5V 2.1A charger. Store had no OEM charger listed on site for sale so I agreed to take a the EP-T4510 charger. While it's not ideal that I won't be getting the fast charge of the OEM charger, it's far from a major issue for me, as long as I'm not going to damage the battery with it and I doubt I will. Even less of an issue if all I really need to do is keep it between 30 and 80.
I've read also that a complete discharge every once in a while is recommended but not sure how accurate that advice is.
G1032 said:
That's all very interesting. I have often read about the 30 - 80 range. I used to own a Huawei P9 and always charged to 100 and that battery didn't last more than 2 years. Last phone was an A70 and that'll be 3 years old in June. Started getting random reboots recently and a quick Google said that's most likely down to the beginning of a battery failure. So just got this GT Neo "as new". It was obviously sent back to the online store by original purchaser minus the charger (replaced with a 5V 2.1A charger. Store had no OEM charger listed on site for sale so I agreed to take a the EP-T4510 charger. While it's not ideal that I won't be getting the fast charge of the OEM charger, it's far from a major issue for me, as long as I'm not going to damage the battery with it and I doubt I will. Even less of an issue if all I really need to do is keep it between 30 and 80.
I've read also that a complete discharge every once in a while is recommended but not sure how accurate that advice is.
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Li's are born to die; they start degrading the moment they're assembled. Don't go too nuts, just replace them as needed.
Until I watched someone replace my N10+ battery I was very concerned. However I realized it's relatively easy with the right skillset and tools.
Mind you they say the N10+ is one of the more difficult ones to replace... meh.
Now I don't really think much about it.