Develop Bugs

This chager charges my phone from 4% to %100 in exactly 3 hours.

So I just ordered this charger and it charged my phone from 4% to %100 percent in exactly 3 hours!
http://www.amazon.com/gp/product/B0051ZJA64/ref=oh_o00_s00_i00_details
Wow, what a great improvement over stock which takes 6+ hours. This makes me believe, that even though the stock output is rated at 1000ma and this charger's output is only rated 700ma that this charges works correctly!
If you have a 1800mah battery and you charge it at a rate of .7A, it should take it exactly 2.57 hours to charge, (1800/700). With stock it should take less, because 1800/1000 = 1.8 hours, but it takes 6+ hours to fully charge! Something is f'ed up with the stock charger or phone's software...

Yeah. About that. I just got my E4GT yesterday and noticed it does charge extra slow compared to my O.G. Epic.
My wife stayed with hers, maybe I will try charging my phone on hers. I wonder if that would make a difference...

Android Amateur said:
Yeah. About that. I just got my E4GT yesterday and noticed it does charge extra slow compared to my O.G. Epic.
My wife stayed with hers, maybe I will try charging my phone on hers. I wonder if that would make a difference...
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At first my charging was extremely slow but now it'll charge from 2 to 100 in under three hours
Sent from my SPH-D710 using xda premium

I use the Palm charger from my TouchPad. Will go from dead to fully charged in about an hour and a half.

What's you TouchPad charger's output in mah? I think I might have to splice into a spare USB cable and check how much current is actually used by phone when on stock charger...pretty sure it is nowhere close to 1000mah.

2000mah is the output from the TP charger.

According to BatteryMonitorWidget, it estimates avg mA charging at 270mA using the stock charger that came with this particular phone.

I have my original charger from my Evo 4g and have noticed that it charges my phone a lot faster then the stock one that came with the phone. :-( weird
Sent from my SPH-D710 using Tapatalk

sfhub said:
According to BatteryMonitorWidget, it estimates avg mA charging at 270mA using the stock charger that came with this particular phone.
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That sounds about right! I'll see if I can test this with my AMP meter tonight and tell you all for sure on stock vs new samsung charger that I've got.

awesomeindeed said:
2000mah is the output from the TP charger.
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Yeah, at 2000mah it should charge in less than one hour...I would say your actual charge current to be around 1200mah...

i would be careful with these chargers.
i have dealt with a lot of Li-Po's in the past and there was a formula to how fast you should charge them.
i imagine it is the same deal with Li-On.
charging outside such formula could kill the life of your battery or worse.

Seems like i must have gotten lucky as a ton of people are having problems with their phone or chargers.
I just charged my battery from 0 to 100% off the stock charger in 2 and a half hours and i also havent gotten any of the dodgy input problems using the phone while charging.

I went back and took a longer look at the battery history when charging. When starting the charge at 65% it starts off around 828mA, then 540mA, then 360mA, so it looks like (as expected) the phone knows how much current to pull to charge the battery safely and it adjusts based on how full the battery is. Not saying it does this for the charger included with your phone, but that is the behavior for the charger included with this phone.
These are all estimates provided by Battery Monitor Widget because there is no real-time mA current meter in this phone (according to the author)

Ordered one of these. Stock charger takes a lifetime to charge the phone.

My GF got Nexus S 4G and it's stock charger also takes 6+ hours to charge, so there's something wrong with the chargers I guess...

The pins on this charger must me different than the stock charger. Just because the stock charger is rated up to 1Ah doesn't meant the phone or batteries circuitry allows that much output. The resistance and length of the USB pins on the cable are what determines the output of the charger. Simply using a different USB cable with the stock charger will get you faster charge times.
Using a 2Ah charger will get you nowhere, the circuitry doesn't allow that strong of a current. Just a bit of an FYI. Save your money and save your phone, use a different USB cable.
Also, how is the charge time holding up? I doubt you're getting a saturated charge with that charger.

SpaceMonky said:
i would be careful with these chargers.
i have dealt with a lot of Li-Po's in the past and there was a formula to how fast you should charge them.
i imagine it is the same deal with Li-On.
charging outside such formula could kill the life of your battery or worse.
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Ive dealt with 1,2, and 3 cell lipos ranging from 150mah to 5000mah, and every one of them either say to be (or ive been told its recommended to do so) charged at 1C. so a 500mah battery should be charged at .5A, 1000mah at 1A, 5000mah at 5A, etc...
my lipo charger displays a bunch of info as the battery charges and it definitely drops the current as the battery gets closer to being fully charged. if its the same with li-on then I would imagine that .18A should be the most you would charge this battery, but Id rather it take a long time because unless things have changed recently, doesnt the slower you charge the battery prolong its life cycle as well as extend how long it lasts each charge? I only charge mine at night when I am sleeping so who cares if it takes longer than an hour. if I get into an emergency situation I have the cig lighter charger and in the worst case I even have one of those crank flashlights I can use to charge the phone in the event my car battery shorted out or something...

U2 vs U9

This is going to sound ridiculous, but I have to say it anyway.
I have a Samsung Galaxy S2 (SGH-i777), and I have two charging cables. A U9, and a U2.
When I charge the phone overnight with the U9 cable, I get a 100% rating on the charge, but the battery dies VERY fast. I unplug the phone at 7am, and it's down to 70% by 10am with very little use.
When I charge the phone overnight with the U2 cable, I get a 100% rating on the charge as well, but then the battery dies very slowly, the way I prefer it. I can use the phone moderately all day, and still have a good 30-40% when I get home after 5pm.
Clearly, I use the U2 cable, as this achieves my goal. My question is, why does it work this way? Is there something wrong with the U9 cable? Does it charge the battery differently than the U2?

Check what kind of charging the phone recognize "USB" or "AC". If it is USB the charging is slower (450mA) when AC is faster (650mA).

flash608 said:
Check what kind of charging the phone recognize "USB" or "AC". If it is USB the charging is slower (450mA) when AC is faster (650mA).
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I'm not quite sure what you mean. Is there a place in the menu of the phone to check for this?
I used to use the wall-outlet adapter with the U9 cable. Now I am using the same wall-outlet adapter with the U2 cable.

It`s hidden in Settings -> About Phone -> Status -> Battery Status (AC/USB)

Shibblet said:
I'm not quite sure what you mean. Is there a place in the menu of the phone to check for this?
I used to use the wall-outlet adapter with the U9 cable. Now I am using the same wall-outlet adapter with the U2 cable.
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When you connect the usb cable the phone says that is connected like a media device and a usb symbol appear in status bar and notification area, it means that are charging at 450 mAh (like usb connected to PC), but if only see a charging battery indicator then is charging at 650 mAh (like Power AC Adapter).
But I really dont know if the charge duration is affected, maybe is overcharging your battery. Try this, charge until 100% with both, but disconnect it when the phone says that charge is complete and try. Maybe with the time the battery is overcharged and has more battery with one of the cables.

At a molecular level, the slower charging is more thorough and actually deposits more charge (energy) into the battery, which is why a slow charge rate results in a better performing cell or battery. Remember, batteries (or cells; a battery is just a collection of cells) change energy from chemical to electrical when providing power, and accept energy when being charged by converting electrical energy to chemical energy. That chemical change doesn't happen instantaneously, and is why a slow charge can actually raise a cell or battery's energy level higher.
Generally, the charger measures the charge state of the battery by the voltage of the cell or battery, and charging slowly allows the charge to more thoroughly dissipate through the cell. Rapidly charging, on the other hand, builds potential (voltage) quickly, but the quick charging doesn't allow the chemical change to occur thoroughly throughout the cells, and misleadingly indicates a higher voltage (charge state) than has actually occurred.
Think of the game of Tetris: When the blocks (incoming electrons) are falling slowly, it's easy to pack them tightly and fit more into the play area (battery). When they're coming in quickly, eventually you become unable to fit them all tightly without leaving voids, and the height of the stack (perceived charge level, or voltage) reaches the threshold without being fully packed (charged).
I hope this helps, four years after the question --Mike Jernigan, Greensboro

EightOhMike said:
At a molecular level, the slower charging is more thorough and actually deposits more charge (energy) into the battery, which is why a slow charge rate results in a better performing cell or battery. Remember, batteries (or cells; a battery is just a collection of cells) change energy from chemical to electrical when providing power, and accept energy when being charged by converting electrical energy to chemical energy. That chemical change doesn't happen instantaneously, and is why a slow charge can actually raise a cell or battery's energy level higher.
Generally, the charger measures the charge state of the battery by the voltage of the cell or battery, and charging slowly allows the charge to more thoroughly dissipate through the cell. Rapidly charging, on the other hand, builds potential (voltage) quickly, but the quick charging doesn't allow the chemical change to occur thoroughly throughout the cells, and misleadingly indicates a higher voltage (charge state) than has actually occurred.
Think of the game of Tetris: When the blocks (incoming electrons) are falling slowly, it's easy to pack them tightly and fit more into the play area (battery). When they're coming in quickly, eventually you become unable to fit them all tightly without leaving voids, and the height of the stack (perceived charge level, or voltage) reaches the threshold without being fully packed (charged).
I hope this helps, four years after the question --Mike Jernigan, Greensboro
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4 year? You waited 4 year ???

Tab S Charging Problem

Hi.
I have owned my SM-T700 for about a year now and its a beautiful tablet! But after updating my firmware to 5.0.2, i have had a problem that really messes up my time with the tablet.
My tablet has slow charging. Like extremely slow. After the update, it usually took around 9 hours to charge completely when at around 30% of battery. Now when I charge it, It only charges around 5% per hour!
I used the app called Amperes to measure my charging rate and it was at 750mA but then dropped to 30mA. I tried resolving the issue by switching to 4.4.2 but I cannot find the XAC version of it unfortunately. Also,
I am not using the samsung charger that came with the device, I am using the samsung charger for my broken s3 but it says that they take in the same amount of mA. I also tried with my cousins tab s charger to no avail.
Thanks! I would be grateful for any help!

Are you using original or hi-quality cables with a real 2.0 amp charger?
I've a Tab S 10.5 LTE updated to Lollipop from the first day I bought it, so I'm not sure if the charging speed differs from KitKat.
When using the original 2.0 amp charger and cable I've noticed that the charge is slower while I'm activelly using the tablet, but that means about 12% hour rate.
If I try with another Samsung charger rated at 0.7 amp it can recharge the tablet slowly and only when it's idle, or just slow down the battery discharge if I'm activelly using the tablet.
I consider this normal, as the tablet can easily surpass 1 amp discharge rate when the display, cpu, radios are all busy.

To get full charge rate of 1800mah , I normally see 1500mah/1600mah you need to use the original Samsung 5.3v 2amp charger and original cable as a lot of third-party charger will only charge slowly as the Tab S cannot recognize the charger is powerful enough, so it only uses a slow charge so not to damage the charger, even with the original charger after the battery reaches 80% fast charge stops and it is normal for the charger to use lower and lower ma as it reaches 100%
John.

Zenfone 2 won't charge beyond 85% while charging via Power Bank

My phone is Asus Zenfone 2 (2GB) It.s charger's specifications are - 5.2V , 1.35A. and battery - Li-Po 3000 mAh battery. When charging via the charger, it gets 100% charged.
I recently purchased Ambrane 13000mAH, P1310, Li-Po battery Power Bank with 5 V, 2.1A and 1A output ports.
When charging my Zenfone 2 via Power Bank, the charging stops sharp at 85%. Initially I thought the Power Bank might be faulty, so I drained my phone's battery to 20% and connected it to the 2.1A port again. And surprisingly it charged my phone again to 85% where again it stopped charging.
Now the functionality of the PowerBank says, when the phone is 100% charged, the PowerBank would wait for few seconds and then will automatically shut down (auto disconnect feature). So, I think at 85% my phone signals the Power Bank, that it is fully charged, and now it should stop charging it any further. However, this is just a lame assumption. But neither do I know what changes in the settings do I need to make nor do I know how to get out of this.
A thought - Can the PowerBank be faulty ? ( 1 time charged Power Bank charged my phone 2+ times to 85%, the 3rd time it reached 65%)

You may need to test with a 2nd phone. We do know that charging the phone does slow down once it hits certain levels, but I've never had an issue with the ZenPower not charging the phone all the way.

after unlocking bootloader and flashing custom rom teameos rom my charger that came with zenfone 2 doesnt work but my trusty old samsung galaxy s3 charger works fine in it not a major loss didnt even use the proper charger much anyways as the cable isnt long enough to reach to my desk or bed and my sammy one is so dont know if its just my phone being weird with it or its the unlocking bootloader custom rom flash thats caused it

Question S22 Base Charging Confusion / Poor Charge Speed

I have had my S22 base for about a week, and while I am still concerned with the life I'm getting (same apps and usage pattern, about 4+ hours of SOT and 15 hours of mixed use) vs the S9, I had decided to keep it until ...
I can't get the thing to super/fast charge. I do not have a Samsung charger (waiting until I get my voucher) but do have a number of 15W and 25W PD-compliant chargers that work on everything from my S9 to my laptop. Unless I turn the phone off, all of those chargers charge S22 at a rate of 10-20% per hour, with Accubattery readings in the 200-1100 maH range, NEVER a value over that. The battery temp and voltage are well in spec. It is currently plugged into my laptop PD compliant charger at a rate of 900 mA with a "time to 100%" of 30h.
Likewise, I bought 2 car chargers that are S21 certified as well as QC3.0 and PD3.0. It has a 30W port. I used the cable that came with either charger (I've tried a ton of cables) and sometimes it gives a "0mA" reading while other times it goes 200mA-800mA at a good voltage. That means while I don't lose charge, I also don't gain. On my 30 min drive home I went from 23% to 24% with dark mode and no apps running.
Finally, to extend the mystery, depending on which aftermarket charger I use the phone itself thinks I'm Fast Charging or Super Fast Charging, reporting that on the lock screen and battery screen. On that screen it says something like 30m to 100% even though the observed charge rate is much lower.
Samsung won't talk to me unless I'm using a Samsung charger and I can't wait until I get the voucher/those are in stock ... I have 5 days to return it and unless you can help me (Obi Wan) I'll be back on that track.

icewiz1 said:
I can't get the thing to super/fast charge. I do not have a Samsung charger
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I use my old 25W (original from N10+) charger and it takes about 1 hour to charge from 15-20% to full. I have the DevCheckPro app showing me at the start 17-18W and about 6-7Amps of charge load initially, at the beginning.