Database Users

Battery Power Drops from 100% to 90% in about 3 mins?

Has anyone else seen this? From 100 to 90% the power just drops almost instantaneously but after 90% its normal.

Already been brought up, a lot.
Apparently when your phone charges up it stops once it reaches ~100% and begins discharging, even though it is still on the charger. People will turn their phone off after a full charge and charge for an additional 20min to an hour before they get another green LED. People have reported much longer battery life when doing this, but it is a pain in the ass.

Studmf said:
Already been brought up, a lot.
Apparently when your phone charges up it stops once it reaches ~100% and begins discharging, even though it is still on the charger. People will turn their phone off after a full charge and charge for an additional 20min to an hour before they get another green LED. People have reported much longer battery life when doing this, but it is a pain in the ass.
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Ahh interesting. I thought I was running into an old winmo rom flashing issue where if you flashed under 50% battery life you could never charge the device above that point.

Yea it sucks but it works... I just ordered an external battery charger since I have 2 batteries now so I don't have to do this anymore
Sent from my ADR6300 using XDA App

two_cents said:
Yea it sucks but it works... I just ordered an external battery charger since I have 2 batteries now so I don't have to do this anymore
Sent from my ADR6300 using XDA App
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Hmm i tried and it acted the same way.

Apparently the HTC models act like older phones did back in the day. What HTC needs to do is put something on the phone face itself when new that says "CHARGE FOR 4 HOURS BEFORE INITIAL POWER ON FOR MAXIMUM BATTERY LIFE."
Once you do this once you dont have to keep doing it. I also powered on my phone the minute I got it and activated it without charging it first and I was seeing this issue until I did a power off charge. The phone runs from 6am to 11pm without an additional charge cycle in the day and that is a huge improvement for me. I was charging the phone twice to three times daily.

How long to charge your phone?

It takes me any where from 2.5 to 3 hours to charge my fone.....no way is that rite....is there anything I can do about this ....
Mytouch 4G, cyg 7.02

I left it all night charging.
Sent from my Nexus One using XDA App

vleger said:
I left it all night charging.
Sent from my Nexus One using XDA App
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Probably not great for the battery but I do it too

mightymike889 said:
It takes me any where from 2.5 to 3 hours to charge my fone.....no way is that rite....is there anything I can do about this ....
Mytouch 4G, cyg 7.02
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that's a reasonable time. 2-3 hours is pretty common

kimbernator said:
that's a reasonable time. 2-3 hours is pretty common
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when i was stock everything nonrooted it would take ehh 1.5-2..now it just takes forever...there no way to speed up this process?
n im guessing every1 has this prob of 2-3 hours?

If you want to wipe the battery stats so you can make sure you are getting 100% out of your battery use the phone till it dies all the way and it turns off. Then turn it on and use it to till it dies, and repeat that process till it will not turn on at all. Plug it into a charger and turn it on & boot into bootloader > select recovery > advanced > wipe battery stats > reboot system and let it charge for at least 8 hours with minimal use.
@kim, charging the phone for that long will not have any ill effect on these batteries. They use LiPo batteries which are extremely different from previous phone battery designs. Our phones actually have a programed system that will cut the charging back and turn it off as the phone battery reaches the max. Once it reaches the max the phone will not charge the battery. When you battery gets HOT from charging is when to be worried. Heat and overcharging (which is next to impossible) are the two biggest killers of LiPo batteries.

neidlinger said:
@kim, charging the phone for that long will not have any ill effect on these batteries. They use LiPo batteries which are extremely different from previous phone battery designs. Our phones actually have a programed system that will cut the charging back and turn it off as the phone battery reaches the max. Once it reaches the max the phone will not charge the battery. When you battery gets HOT from charging is when to be worried. Heat and overcharging (which is next to impossible) are the two biggest killers of LiPo batteries.
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Looks like i learned something today.

kimbernator said:
Looks like i learned something today.
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I only know this because i use LiPo, NiMH, and NiCad batteries in my Electric RC cars. Been into that hobby for going on 20+years.

Takes about 2.5 hours for my phone to charge fully from 0%

The battery ages, and the time it takes to charge it goes up. Perfectly normal.

if you take the battery out and shake it for about a minute it will charge faster.

Are you kidding? haha

yes lol was wondering how long it would take for someone to speak up.

I think it is actually healthier to charge the battery slowly. Fast charging heats the battery... 2-3 hours seems reasonable.
And of course, shaking does not help- without the ice
Sent from my HTC Glacier using XDA App

darinmc said:
if you take the battery out and shake it for about a minute it will charge faster.
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Oh wow, that worked! Thanks!

How do you first charge the Nexus 4 for the best battery life?

I remember as a kid, when getting new hardware, you need to charge it to the maximum and leave it in for a few hours to kinda work the battery and get the most optimal battery life. So for this phone, what would you need to do when you first get it to get the battery to be the best it can be?
Do we cycle it from 0 to 100, or just charge it to 100 and leave it?
Or does it not matter?

qwahchees said:
I remember as a kid, when getting new hardware, you need to charge it to the maximum and leave it in for a few hours to kinda work the battery and get the most optimal battery life. So for this phone, what would you need to do when you first get it to get the battery to be the best it can be?
Do we cycle it from 0 to 100, or just charge it to 100 and leave it?
Or does it not matter?
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It doesn't matter. While older nickel-cadmium batteries could have issues with charge memory, lithium ion batteries are not affected. Just charge and use your phone as normal. If you want to maximize battery life make sure not to place your phone in extreme heat (eg. inside a locked car in summer time) and avoid leaving your phone at 0% charge for any length of time.

firstness said:
It doesn't matter. While older nickel-cadmium batteries could have issues with charge memory, lithium ion batteries are not affected. Just charge and use your phone as normal. If you want to maximize battery life make sure not to place your phone in extreme heat (eg. inside a locked car in summer time) and avoid leaving your phone at 0% charge for any length of time.
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But the phone is using Lithium Polymer...

qwahchees said:
But the phone is using Lithium Polymer...
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For the purposes of this discussion it is identical.

Well technically it's Lithium-ion Polymer

Same thing. Either way they don't have the memory issues that old rechargeable batteries had..
Sent from my Galaxy Nexus using xda app-developers app

Nope.
These new Lithium batteries aren't subject to any of these myths.
Same with the "Take off your device from the charger once it has been fully 100% charged or the battery will stuff up." Nope. The battery just cuts the charge and just runs down. That's why if you look at your charging history, it might go to 99%, 98 or even 97, and go back up to 100% because that's when the phone decides, "Yep, I'll take a bit more charge."

Alright. Thanks to everyone!
I'm getting mine tomorrow ;D
(Aw, outta thanks to give :'( )

It is good with these batteries to run then down to almost empty every week or so, right?
Sent from my Nexus 7 using xda app-developers app

Richieboy67 said:
It is good with these batteries to run then down to almost empty every week or so, right?
Sent from my Nexus 7 using xda app-developers app
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Another myth. Not true for Lithium batteries

Really? I read this in a battery forum years ago. This was for laptop batteries though..
Not meaning to sound sarcastic, how do you know this? Are you an electronics engineer or something? Just wondering.
Sent from my Nexus 7 using xda app-developers app

Lithium-ion/lithium-polymer batteries don't have the "memory effect" that older nickel-cadmium and nickel-metalhydride batteries did. So there's no point trying to run your battery down low every now and again to help its life. In fact, it seems that charging it more often is the most helpful thing, i.e. lots of small charges rather than big charges all the time.
Just use it normally and charge it when you need, it'll be fine.
Sent from my HTC Vision using xda premium

How about leaving the phone charging after it is fully charged? Like when you charge it overnight.

arcwindz said:
How about leaving the phone charging after it is fully charged? Like when you charge it overnight.
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The phone and charger electronics will lower the rate of charging as it reaches 100% and turn it off when it's done. You don't need to worry about unplugging it right away.
In longer term storage situations where you aren't using the device (i.e. weeks or months) it's optimal to store the battery at a charge level of 60-70% to reduce battery degradation over time. When the Mars rover \Curiosity was en route to mars the batteries were at 60% and were charged upon approaching the planet.

Richieboy67 said:
Really? I read this in a battery forum years ago. This was for laptop batteries though..
Not meaning to sound sarcastic, how do you know this? Are you an electronics engineer or something? Just wondering.
Sent from my Nexus 7 using xda app-developers app
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I am an electrical engineer actually. Li-Ion or Li-Po batteries do not need to be treated any special way. The only thing that degrades them is use and time. And it does not matter how deeply you discharge them (discharging to 50% twice is about the same wear on the battery as discharging to 0% once, within a reasonable degree of error).
What you may have been reading was with regards to calibrating your laptop's battery meter. There is some truth to that, and allowing even your phone to discharge completely (down to 5% or so) once can help make sure your battery percentage is accurate. But it does not affect your battery life at all.

qwahchees said:
I remember as a kid...
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I remember as a kid that all the phones had a cable attached and no battery whatsoever...
Sent from my MB860 using Tapatalk 2

I'm following what the manual said!
I was going th carge wherever and start using it, beut then i got the phone and read that it would be good to charge it full first.
i.imgur.com/0PP3v.jpg
I prefer to follow what google says thank you very much

Actually...
raziel.beoulve said:
I was going th carge wherever and start using it, beut then i got the phone and read that it would be good to charge it full first.
i.imgur.com/0PP3v.jpg
I prefer to follow what google says thank you very much
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Actually, it doesn't say to do it "first". It says "its a good idea to fully charge *as soon as you get a chance*."
The wording in the quick start guide you provided doesn't seem to imply that its a critical thing. It seems to me that they are putting that there in case someone takes it out the box, starts playing with/using it, then wonders why the phone is already dead. Then they post to XDA about how the battery life sucks. (Just kidding! )

N7100 over charging

I generally try not to charge my note 2 overnight. I want this battery to be healthy as long as possible, so I don't want it to sit at high voltages for too long.
Normally my note 2 is around 80 percent when I go to sleep so I don't plug it in at night, I just plug it in in the morning for an hour before going to work. It reaches 100 and then I remove it.
The times when my battery is much lower that I won't be able to charge it in the morning in the hour, I do charge it overnight.
What I've noticed is that the battery drains much slower on the days it's been on the charger overnight.
So I'm thinking that the charger will continue to raise the voltage even after it reaches 100%. Maybe someone has some other thoughts, but I just wanted to share what I've noticed so people are careful with their battery.

Hi,
Charge it yhe way you want. Don't stress on it.
But for a few tips:
Don't let the lithium-ion battery go down to critical battery levels before charge.
Don't put the battery on the refrigerator.
Don't over charge it even if it's a new battery .

Simone said:
Hi,
Charge it yhe way you want. Don't stress on it.
But for a few tips:
Don't let the lithium-ion battery go down to critical battery levels before charge.
Don't put the battery on the refrigerator.
Don't over charge it even if it's a new battery .
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So basically i can't charge the battery overnight? I don't understand the meaning of don't overcharge it.

Raging_Ken said:
So basically i can't charge the battery overnight? I don't understand the meaning of don't overcharge it.
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You can but can potentially damage the battery. It's up to you.

I'm going to disagree with you guys. The charger and the battery has overcharging protection built in. So don't speculate with overcharging overnight. In fact when the phone has stayed longer on the charger I got better battery life. Cheers
Sent from my GT-N7100

kirilorius said:
I'm going to disagree with you guys. The charger and the battery has overcharging protection built in. So don't speculate with overcharging overnight. In fact when the phone has stayed longer on the charger I got better battery life. Cheers
Sent from my GT-N7100
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Yes, I know. So why would you charge your phone overnight? So it would stay 100% when you wake up?

I charge my phone overnight everyday.
The battery magnet would trigger the charger into trickle mode. This prevents overcharging.
Li-ion battery prefers to be charged then discharged. Contrary to hearsays, discharging it to critical levels too often would actually degrade battery life.
My Nexus one of 2 years still maintained a 84% charge because of this.

Simone said:
Yes, I know. So why would you charge your phone overnight? So it would stay 100% when you wake up?
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Cause i'm using it all day till 1-2 o'clock at night and thats the only time i can charge my phone. And with the heavy usage im putting it the battery cant hold more then 15-16 hours
Sent from my GT-N7100

The battery have both overcharging and undercharging protection.
So there is no problem charging your phone overnight, the battery will stop charging when it is full. It will then be allowed to discharge a bit and the charging cycle will resume. The fluctuations caused by this charge/discharge cycle are usually hidden by the firmware so that you only see 100% - charged.
As for undercharging, it can indeed kill batteries, but it won't happen unless you drain the battery completely *and* let it self-discharge for a few weeks.
You don't have to adopt a specific charging pattern to keep your battery in good shape, just do what's most convenient for you.
Some tips however :
- Avoid high temperatures, batteries don't like it. The fridge is actually a good place to store your batteries provided that you took the necessary steps to prevent condensation.
- Store unused Li-Ion batteries at about 50% charge. Fully charged batteries have a lower shelf life, the 50% are there to prevent self-discharge from causing undercharging.
- A full discharge-charge cycle won't make your battery healthier but it is useful to recalibrate the power gauge.

kirilorius said:
Cause i'm using it all day till 1-2 o'clock at night and thats the only time i can charge my phone. And with the heavy usage im putting it the battery cant hold more then 15-16 hours
Sent from my GT-N7100
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I see. Well, in your case it may be better.

Because during the night it gets more time to detect the proper voltage and stop.
And the battery is removable for a reason. It'll have over 80% original capacity even after 2000 discharges and it's only $20 at most to replace. No need to stress it over. Use it all you want and replace it the time comes. Leave the stressing over to the non-replaceable guys.
Sent from my GT-N7100 using xda premium

BBlax said:
Because during the night it gets more time to detect the proper voltage and stop.
And the battery is removable for a reason. It'll have over 80% original capacity even after 2000 discharges and it's only $20 at most to replace. No need to stress it over. Use it all you want and replace it the time comes. Leave the stressing over to the non-replaceable guys.
Sent from my GT-N7100 using xda premium
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Exactly.

If said battery full unplug charger, i let the phone still connect to charger moreless 1 hour...
Sent from my GT-N7100 using xda premium

Rudyansah said:
If said battery full unplug charger, i let the phone still connect to charger moreless 1 hour...
Sent from my GT-N7100 using xda premium
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Why anyone stresses over a $20 user replaceable part is beyond me. I think you're too used to iPhones

kebabs said:
Why anyone stresses over a $20 user replaceable part is beyond me. I think you're too used to iPhones
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I love eating kebabs. LOL :cyclops:

BBlax said:
And the battery is removable for a reason. It'll have over 80% original capacity even after 2000 discharges
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You telling me if i charge once a day, the battery will still have over 80% charge after 6 years of years? I find that hard to believe as all my previous batteries have to be replaced after 2 to 3 years of use.

That's the quote from manufacturers under ideal conditions. The only devices that I haven't threw out for that long are laptops and the battery in them are still working flawlessly and holds a reasonable charge.
Even tiny LSD batteries can have up to 1000 charges so higher capacity ones will last longer and be more durable due to the increased amount of cells. Just like how higher capacity nand will last longer than lower ones.
Sent from my GT-N7100 using xda premium

It's a 30 battery. Treat it like **** and just replace it when it dies! By the time it's dead you'll be wanting a new phone anyway.

[Q] Is my battery normal?

Yesterday when I woke up my G2 has 20% battery left, then I charge it to 80%. Then in the evening I charge it again 40%-80%. Then today I woke up again, (In the first SS)I'm just curious why is my "Usage in Battery" reaches 46 hours 29 minutes? It combines the usage on the other day and yesterday. "Expected time to use" is 61 hours, but I know it is not accurate because when I started playing games for like 10mins it goes down to 1hour left haha. And in the second SS, I'm assuming that it also combines the Screen time of the other day and yesterday.
a 20%-80%=60%
b 40%-80%=40%
c a + b = 100% I think it is 1 full cycle and should turn my battery Usage to 0 min again.
Is this normal? I don't really understand how G2's battery works.
I usually charge my G2 two times a day because of games. And charges it when it reaches below 40% to 80%. I don't really drain it and charge it to 100%. Am I doing it right?

coowkeee said:
Yesterday when I woke up my G2 has 20% battery left, then I charge it to 80%. Then in the evening I charge it again 40%-80%. Then today I woke up again, (In the first SS)I'm just curious why is my "Usage in Battery" reaches 46 hours 29 minutes? It combines the usage on the other day and yesterday. "Expected time to use" is 61 hours, but I know it is not accurate because when I started playing games for like 10mins it goes down to 1hour left haha. And in the second SS, I'm assuming that it also combines the Screen time of the other day and yesterday.
a 20%-80%=60%
b 40%-80%=40%
c a + b = 100% I think it is 1 full cycle and should turn my battery Usage to 0 min again.
Is this normal? I don't really understand how G2's battery works.
I usually charge my G2 two times a day because of games. And charges it when it reaches below 40% to 80%. I don't really drain it and charge it to 100%. Am I doing it right?
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I think it is better to charge it 100%.
But if the battery dies you can always replace it

I'm a person who tries to not to do what you do because it could over time damage the battery. I always charge to 100% and try to drain it as much as I can before I recharge it.
Sent from my LG-VS980 using xda app-developers app

clapper66 said:
I'm a person who tries to not to do what you do because it could over time damage the battery. I always charge to 100% and try to drain it as much as I can before I recharge it.
Sent from my LG-VS980 using xda app-developers app
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And you'll damage your battery faster. Your approach was good for nickel based batteries, not good for lithium-ion.
This is the first link from Google search, there are many posts about it:
http://gizmodo.com/how-to-take-care-of-your-smartphone-battery-the-right-w-513217256

only if you charge it to 100%, then the statistic will starts a new one,
if you're charging up to 80% and disconnect the charger, the statistic will keep from the previous full battery charge statistic.

zekurosu said:
only if you charge it to 100%, then the statistic will starts a new one,
if you're charging up to 80% and disconnect the charger, the statistic will keep from the previous full battery charge statistic.
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Then people who always post their SS of the usage on battery of their phone that are hitting 2-3 days are all just being boastful? haha
That's why I'm always curious about my battery info because it is not always accurate and people tend to believe that their "usage on battery" info are always correct. I'm not saying all, but there are so many.
@chaki- do you know where I can find a replacement battery on my G2? Then if yes I will probably destroy my phone for charging 100% all the time.
@clapper66 , as @ddavtian said, it is for nickel based batteries only and you should change the way you charge your G2.

coowkeee said:
Then people who always post their SS of the usage on battery of their phone that are hitting 2-3 days are all just being boastful? haha
That's why I'm always curious about my battery info because it is not always accurate and people tend to believe that their "usage on battery" info are always correct. I'm not saying all, but there are so many.
@chaki- do you know where I can find a replacement battery on my G2? Then if yes I will probably destroy my phone for charging 100% all the time.
@clapper66 , as @ddavtian said, it is for nickel based batteries only and you should change the way you charge your G2.
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so its bad to kill a battery down to 10% then re charge to 100%?

clapper66 said:
so its bad to kill a battery down to 10% then re charge to 100%?
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I have been using my phones always the same way when it comes to charging.
Have never had issues with the batterys.
My sensation xl is more then 2 years old and still can standby more then 36hr wifi etc. on with the original battery.
What destroying are you talking about?
Thats the same if you don't drive your car, not to change your car battery......
At the end i bought that phone to use it, not other way arround.
One battery doesn't cost the world. There are service shops that can change it.

That link is a good read. Gonna try it from now on as this beast of a phone needs proper care as well :what:
Sent from my LG-D802