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I'm referring to the fact that the battery drains rapidly in the first few minutes, and might drain more rapidly than it should the rest of the day.
heres a post i made on another thread, but created a new topic also because i feel i really want to start a discussion about 2 different things:
1 my perceived odd battery charge cycle.
2 how many of us have this issue?
3 if not all of us have this issue then maybe there's hope i can swap this out for a different phone with out this issue.
here is my original post:
i do have something unique to add to this discussion but first:
well i can say that i did try this "top off" thing and it does seem to work, but as soon as i discharge the battery though use and recharge that night i was right back in the same boat of having a battery that drops very rapidly in the first 10 minutes or so and then continues to drop faster than it should the rest of the day. so imo, this top it off method only works at that moment, ie, not a long term fix.
also, i charged my evo battery in my touch pro2 and the charge didn't drop rapidly in the first few minutes. Also it seemed to last all day much better then it previously. i was able to play around all day with the phone and the battey drain was surprisingly good.
ok, the interesting thing i observed and i can replicate is:
when using the battery graph app i can watch battery level percentages versus time on a chart. in this chart i observed a charge cycle pattern that has me concerned.
while charging the percentage line on the graph was gradually increasing at a semi steady rate from 0% till 90%, then changed its charge rate at 90%
here is how it broke down.
0% 114am
90% 309am steady increase all the way to 90%
100% 315am very rapid charge at this stage (probably not good)
basically it had a steady charge rate of .78% per minute until it hit 90%.
then the remaining 10% rate was: 2.5% per minute.
this last 10% of the charge cycle charges 3.2 times faster rate then the previous 90%. i don't know much about charging but this may be a hint to something that's causing this issue.
also, just how many of us have this issue? all of us, whether we know it or not?
some of use? will there be a fix? is this covered by a warranty or software fix, or so we need to "top it off" every charge?
i'm still within my 30 days and i dont want to swap this out for another if they all have this issue.
I think its the way evo charges the battery.. As I posted about my findinga that when charged in my tp2 I dont see this fast drop anymore. The drop I saw was a 1/8 of the battery icon within 15 min not using.. So more than 10% drainage.. Also its nice the tp2 battery is the same.. So I always have a charged battery so I just switch out batts.. Most of use have this prob unless rooted and tweeked with setcpu..
Edit: only charge batteries from tp2 not from evo anymore..
sent from my Evo
I have read that this is the way the Evo is supposed to work. The battery charges to 100%, then it quits charging and runs off of the battery until it reaches approximately 90% charge, Then starts charging again. This is supposed to be better for the battery. So, if you take it off of the charger when it is about ready to start charging again, it can drop 10% in the first 5 minutes.
Franky, it appears to work this way with my phone, but I have not had the rapid battery drain issues that some have. My battery regularly makes it through the day fine with moderate to heavy use.
Another thing I have noticed is that not messing with it helps a lot. After I upgrade my rom it seems to take about three days for the battery to get back to its normal cycle. for the first day it drains faster than normal, but last longer each day thereafter.
i have done the same thing with using the touch pro 2 to charge my evo battery. kinda rediculas dont ya think?
that sure makes for an expensive charger, i would much rather sell my touch pro 2 to offset some of the cost for early termination what not.
i talked to customer support and of course their response was the canned response of "your evo is power hungery thats all...yada yada"
do you think that all evo's have this issue and no one else is noticing?
What I find funny is you buy a heavy use device that is designed for using. Everything you do on this device uses battery. I went from the touch pro 2 to this device and I am happier with the EVO than I was with the tp2. You might be surprise how much battery life you would get if you turn off all the radios except for the phone portion and only us this as a phone.
After the touch, mogul, touch pro, and tp2, I am permanently an HTC customer.
Sorry, just my opinion. I may be wrong.
Sent from my Sprint EVO 4g with the XDA app!
The bad thing is not all of us have an extra touch pro 2 lying around to charge our evo.
When I leave my phone on the charger and not use it at all and it drains 10% in 6 minutes that's rediculous. even though my phone has technically been in standby mode and using the battery for the top 10% their hasn't been one time where I took my phone off the charger and it didnt drop in 5 minutes.
Mine is random. Some days I get great battery life, and others I get 5 hours. I'm going having two spare batteries and a wall charger will fix this.
Sent from my EVO using XDA App
Maybe I gave too much info and perhaps I drowned my main point
The charging algorithm changes The speed in which it charges the battery at the last 10% of the charge.
This is probably the problem.
My tilt 2 does not do this. Therefore I get a proper charge and the charge lasts as it should.
Look at my findings above.
I have had it plugged into the mains, running tunein radio through wifi and its gone from 85% to 86% in one hour.
If I charge from 10% with phone off it takes about 4 hours to fully charge
If I charge from 10% with my phone on running stuff, it actually never gets to fully charges by the time I finish work...at 6pm
Sorry to keep comparing to the dreaded FruitPhone, but that would charge whilst running wifi and tunein from 10% to 100% in about 2 hours.
I am beginning to think my SGS2 is faulty
i am fiding it takes about 3 hours to charge from empty . It does take a long time indeed but i guess it is what we have to do for a 1650mah battery
3 hours from empty with stock charger .
jje
it might well be a 1650 battery, but it starts to get unusable when it takes all day to charge then a few hours to loose it all.
This phone is the greatest but the battery life just completely destroys it, I am beginning to think I made the wrong choice
JJEgan said:
3 hours from empty with stock charger .
jje
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Is that while using it?
you are not supposed to use the phone when its charging its really bad for the battery it gets very warm during charging as it is...
virussnake said:
you are not supposed to use the phone when its charging its really bad for the battery it gets very warm during charging as it is...
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Aye... if I don't the bloomin thing would be dead by lunchtime, and I listen to music.
So I basically have to turn it off not use it so I can charge it, how crap is that, owned my iphone a year never had any problems with battery and I always used and charged in its dock.
The desire had slow charging too but snq- fixed this in his kernels maybe we can port his fix to our kernels
btw it's true li-ion batteries degrade quicky when the heat up (or completely charge or discharge)
From 30% it took me one hour and a half to fully charge..
I recommend to download battery mix as it takes very good statistic on the battery life and one can tell exactly how long it takes to charge and discharge
Sent from my GT-I9100 using XDA App
just for the record all Lion batteries in phones never fully discharge or recharge, as there balanced by a balancing chip.
when you get to the likes of 0% you actually have 20% charge, thats why you can power on the phone but it will immediately switch off again. like wise, charging you never reach 100%, it's more like 89%, again because of how Lion works.
if you fully discharged and fully recharged, well put it simply you'd have a lot of exploding phones, fire and chemical burns...
Interesting!
My phone charges in about 2,5 - 3 hours, so should be normal...
But charging with the usb cable connected to the pc it takes much longer.
Any of you experience the same thing?
greets!
THUDUK said:
I have had it plugged into the mains, running tunein radio through wifi and its gone from 85% to 86% in one hour.
If I charge from 10% with phone off it takes about 4 hours to fully charge
If I charge from 10% with my phone on running stuff, it actually never gets to fully charges by the time I finish work...at 6pm
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Because:
a) That´s how Li-Ion-batteries are charged. To fully charge a Li-Ion-battery you need 3-4h.
b) The power-supply is pretty weak. It is just enough to charge the phone at decent speed, but it is not enough to charge it and intensely use it the same time. In this case much of the power is used by the phone and there is not enough left to do a proper charging. I use a 1,2A power-supply from my old Nokia, and while it won´t speed up charging itself, at least it slows down less when I´m using the phone while charging.
Sorry to keep comparing to the dreaded FruitPhone, but that would charge whilst running wifi and tunein from 10% to 100% in about 2 hours.
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This is not possible. The mighty fruity-phone may tell you it is 100% charged, but certainly it isn´t
You can charge a Li-Ion-battery very fast from 0 to 70-85% you could reach this in 1h. But you have to charge the remaining 15-30% very slowly, otherwise the voltage would raise too much and destroy your battery.
The so called saturation-stage (the charging-stage until 100%) takes longer the faster you charged at the beginning. If you really charged until the saturation-stage in 1h, the saturation-stage will take 2-3h.
If you charge slower, so you reach saturation-stage after 2h, the saturation-stage will only take 1-2h anymore.
In the end it will always take 3-4h to fully charge a Li-Ion-cell, regardless how strong your power-supply is.
Another few notes:
Charging will get slower the fuller the battery already is.
Using the phone with low battery-percentage will lengthen the charging-time quite a bit, a stronger power-supply could help.
Getting the last 20% in a Li-Ion-cell will always be very slow, usage of the phone won´t influence this a lot, and a stronger power-supply can´t help.
It doesn´t matter much, how much charge is left in the battery, to fully charge it it will always take long, as you spend most of the time in the saturation-stage (the higher the left percentage is, the more time you spent in saturation-stage)
I am beginning to think my SGS2 is faulty
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It is not faulty, it is designed this way.
It took 3 hours 10 minutes to fully charge my dog and bone yesterday whilst off
Thanks for the explanation!
jonny68 said:
It took 3 hours 10 minutes to fully charge my dog and bone yesterday whilst off
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Your having a bubble bath ain't you mate
Your battery sounds faulty to me, taking over 4 hours and only charging 1 percent in an hour. Try the battery calibration app in the market, if it doesn't improve get it swapped mate
[email protected]
Sent from my Samsung Galactic Crusader S II
The wifi is the killer, try turning it off when charging your phone..
Sent from my GT-I9100 using XDA App
it takes so long to charge because samsung capped the charge current at 650 mA in the battery driver. but other phones like HTC allow charging at the full 1 amp. so that's why its a slow charge, and why its possible to drain the battery even while plugged in to the charger.
Now who wants to ask kernel developers to increase that to .850 or 1 amp and use that lol.
I believe lack of heatsink due to design is the culprit behind decision to cap it at .650.
Sent from my GT-I9100
3 hrs to fully charge, and as i use tunein radio a lot i can tell you on my device with the screen off, wifi on with tunein running, it still seems to take no more than 3 hours maybe 15 mins more at most
I am probably going to order a cheap eBay Li-Ion battery that's 1800mAH and likely has a charge cap closer to 1000mAH. I will know in a week when I finally get my phone and report back if that battery helps. I expect it to heat up while charging and am going to use an external charger.
Two replacement batteries and an external charger go for about $12 USD on eBay btw.
I have had my S2 for about 4 weeks now. The internet at home conked out so I have been using the the wifi sharing feature on the phone a lot - like 4-5 hours each day for the last ten days, and since this feature eats up battery real phast, its been sitting on the charger for most of that time, and then some more.
Now since the last two days, the phone doesnt charge anymore. In fact it drains battery whilst connected to the charger. The battery lasts about 2-3 hours now with moderate usage. I managed to get it to full charge when it was switched off and charged overnight for 6 hours. I've attached the results after that full charge
This is after the phone was plugged in for about 20 minutes. If you notice on the right side, the battery is draining while its plugged in!!!! The big drop was reading and sending a few emails, reading some news etc.
I installed some battery monitor apps from the market and they showed the battery being in good health. Any suggestions ?
Try recalibirating it..
let it run down completely and full charge ( don't use when charging) then use until almost dead again ( don not use charger in between) and full charge again.
Seee if that helps or go get a new battery :/
So after a bit more testing, I notice the phone charges at a normal rate when its switched of.
However when its running, then it doesn't charge at all, and over time drains battery, but does drain slower that it would if its not charging.
So one of two options
a) Battery's charge capacity is severely depleted, and is not able to hold much charge. However this battery is less than 4 weeks old~
b) There is something that is absolutely devouring the battery. (screen is what shows up us having used 60% of the battery)
If its battery, will it be covered under warranty? If its something else, how do i fix it. I'm still on 2.3.3 but this seems a bit extreme for the AOS or WIFI bug.
tfn said:
let it run down completely and full charge ( don't use when charging) then use until almost dead again ( don not use charger in between) and full charge again.
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So thats pretty much what ended up happening, it died completely, had to charge it overnight to full charge...and still only lasted a couple of hours.
My guess is that the constant load on the battery running a hotspot has hooped it. Might get warranty support if you don't disclose how you were "abusing" the battery.
Cheap temporary solution is to buy a set of cheap knockoff batteries from Ebay, less cheap is to spring for a genuine Samsung unit. Long term solution is to get your home internet working again.
First step would be to backup all data and factory reset .
That fails i would return under warranty .
jje
Just an update - I removed all the widgets from the home screens and its actually charging now I had the AP widget, the stock price, accuweather, a few widgetdroids, flashlight, photo frame, espn news, touchdown calendar and pulse.
Its not even a month old... and runs pretty damn hot as it is, I dont want to take a chance by using a cheap battery. If i have to, I'll buy an original.
But as far as abusing the battery - its should not be any different than running your laptop plugged into the charger at all times right - how is that beyond normal usage?
After it charges up fully, lets see how long the battery lasts in this 'lite' mode.
Just an update. I'm not sure if was the recalibration suggested by tfn, or removing all the widgets, but i went from losing full charge in 2 hours to losing charge at a rate of 2% per hour under heavy usage!
This is crazy - i think those widgets are taking up way more battery than we think.
Help guys, my battery drains so fast. It charges so fast also drains so fast like 1 hour and 35 mins of usage and its dead. Then when I charge again it instantly goes 40%+ again even though my battery just went 0%. I tried many roms, kernels and chargers. No hope
I have same issue it even sometimes charges very slow and when its on charger and I'm using my phone battery drains.
Is this a problem with battery or my phone?
* I use stock charger and OTG
Sent from my SM-N9005 using Tapatalk
I have a used Note 3, one year within my posession (I'm thinking this here's 1.5 years old.) I think it's a problem within the BATTERY itself. Fortunately, spares are fairly easy to find and for cheap. I tried another battery and it gave me 3+ hours screen on time consistently no matter the usage when the original battery could barely eke out 2.
So I had this 910C for a while. Still love this phone but recently the stand by time kept decreasing. This was my second battery but I used fast charging, so I thought what the heck, I will just buy a new one.
Well I did, and the stand by time is just as bad. Almost half my battery is gone by the morning, and the battery barely wants to charge as well. (it's like the phone is cold and the charger is also just lukewarm.)
So what the heck?
Is there a known hardware defect on the Note 4 for this?
Even if I could replace the phone (but why when it works great otherwise), I would still like to keep it around as a secondary device.
Any ideas?
Ps.: Now when I was writing this, my phone also got quite hot but the AUKEY portable charger is cold. My percentage was 16-17 and it could not go higher.
Well, after long hours of charge the new battery does show 100%, but when I make a call the phone gets extremely hot. Like it burns my face.
This morning I watched like 5 minutes of Netflix and that ate ~20% of my battery.
The battery does not get hot, is not bulked up, it's very hot around the main chip...
Using latest Samsung OS btw, don't even have root installed atm.