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[Q] just got my new g2x how should i charge the battery?

my last g2x battery lasted like 4 hrs on a full charge what is the best way to charge the new one? do i let the battery run out then charge it?

When you first get a phone, you should let the battery die before charing it. Then charge it completely after it dies, this will maximize your battery life. If you charge it right out the box, you're actually reducing the amount of juice the battery can hold.

rashad1 said:
When you first get a phone, you should let the battery die before charing it. Then charge it completely after it dies, this will maximize your battery life. If you charge it right out the box, you're actually reducing the amount of juice the battery can hold.
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That's not really accurate. Lithium Ion batteries have no memory effect like older batteries so charging them from halfway full does not reduce the maximum capacity.
What happens is the phone needs to learn to measure the amount of mAh from the phone and recognize what battery % that means. By taking the phone through the full discharging and charging cycle, the battery drivers pick up on this and will better report the battery level. With a poorly calibrated battery, you do not get less battery, but instead you just will not see accurate information about the charge level. For example, my first discharge went quickly to about 10%, and even quickly below 5%, but stayed on for hours between 5% to eventually shutting off.
The battery still will not die faster, but my phone thought it was much lower than it was, giving it the appearance of dying faster. Point is, you can do the charge/discharge cycle whenever, not just the first time, and it won't effect your long term battery health.

1) do factory reset
2) drain completely
3) charge completely

thanks!
thanks everyone for your advice!

I think it really depends on who you ask. lol Some people will say let it drain first then charge it fully. I have read info on battery maker sites that suggest when you get their battery that you let it charge fully for at least 8 hours, then let it discharge fully. They say to do this the first 5 charges to increase battery life.
When I get a new phone or battery that's what I do. as soon as I get it I charge it up overnight, then let it discharge completely for the first 5 charges. I can only speak by my experience and my experience tells me it makes a difference. Here is my reasoning: me and my ex gf went one day to get new phones. We got the same phone. She started using hers as soon as we left the store. I waited. I charged it up overnight fully and did the conditioning procedure. Our phones were pretty much mirrors of each other app and software wise. Her battery would die out a couple of hours before mine. Battery usage also didnt report any HUGE differences in consumption .
Also every once and a while I go into Clockwork recovery and wipe battery stats(after it's been fully discharged) and re do the conditioning process. It might just be a mental thing, but for me this seems to work

supposedly from htc.....
1) Turn your device ON and Charge the device for 8 hours or more 2) Unplug the device and Turn the phone OFF and charge for 1 hour 3) Unplug the device Turn ON wait 2 minutes and Turn OFF and charge for another hour Your battery life should almost double, we have tested this on our devices and other agents have seen a major difference as well

I heard/read somewhere that you should never let a lithium ion battery fully discharge. It supposedly shortens its lifespan every time you fully discharge it. Instead, you are suppose to just top it off and not let it remain on the charger, for extended periods of time, once its reached a full charge. YMMV

*Omnipresent* said:
I heard/read somewhere that you should never let a lithium ion battery fully discharge. It supposedly shortens its lifespan every time you fully discharge it. Instead, you are suppose to just top it off and not let it remain on the charger, for extended periods of time, once its reached a full charge. YMMV
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This is "more" true for everyday normal usage. Yes, you shouldn't constantly fully charge and fully discharge every time you use your phone. But for battery calibration it is necessary/beneficial.

I also hard that during the first charge after turning the phone off you have to strange on your head for ten minutes, then only use your left hand for the rest of the day and you will double your battery life

rashad1 said:
When you first get a phone, you should let the battery die before charing it. Then charge it completely after it dies, this will maximize your battery life. If you charge it right out the box, you're actually reducing the amount of juice the battery can hold.
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Well I did it this way too. I get good batt
Sent from my LG-P999 using XDA Premium App

[Q] Am I Damaging My Battery?

I go out at night mostly so by the time i leave the house my phones battery is about 75% full. I have the LG G2x. My question is sometimes before i leave i'll see that it's 75% full so i'll charge it back to 100% before i leave. Does charging the phone without it being drained damage the battery? should i just leave it alone next time i go out? sorry if this is already a thread just point me in the right direction.
Thanks.

You're not damaging your battery But if you never drain the battery completely, i'm not sure how good the battery will be after 6 month, so i recommend you drain it completely every couple of weeks.
Sent from my HTC Desire HD using XDA Premium App

There are several opinions about keeping battery health for more time. Recharging at 75% is not one of them, but it's not the worth of it.
Here's what i know and what i've heard:
* some manufacturers (laptops) have software that don't allow the battery to charge when it's over 80 to 90% - they say it helps on battery life
* it's common sense that you should recharge when you have 20 - 40% and do a full cycle once in a while (this is what i do)
In my opinion, charging only 25% of the charge in a regular basis will not really help to keep battery life...

I've personally had the best performance from batteries when I let them discharge as much as possible and then charge them to full without interruption.

some have also said that draining the battery too often can also damage it, is this correct?

They like to be ran down then recharged but not all the way down to nothing unless you are having a problem with bat life on a rom

groe886 said:
some have also said that draining the battery too often can also damage it, is this correct?
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Yes. You should not drain your battery all the time. Use normally, charge it when below 40% and yes, charge it back to full - that's the ideal thing.

l4g4rt0 said:
Yes. You should not drain your battery all the time. Use normally, charge it when below 40% and yes, charge it back to full - that's the ideal thing.
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+1 that is the best way. Li-on batteries should'n be drained completly because it can shorten their life.

I read somewhere that it is not important when you start charging your battery (20%, 60%...) but it's important that it finishes to charge up to 100% every time

I heard/read that LI-ION batter is good to charge when cap goes bellow 30%.

[Q] How Many Times Did You Calibrate Your Battery Before You Gained Full Potential

I am now on my 2nd full charge. Drained completely and full charge while off. I have the battery calibration app and i use it. Im about to take my phone off the charger and put it to work.
How many times did you calibrate your battery before you got the full potential of it. I see some people are getting as much as 30+ hrs on their device while im getting 7-9 on moderate use.

I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.

regP said:
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
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Ill keep it till tues/wed and see what happens. If I don't see improvement ill exchange once again
Sent from my LG-P999 using XDA Premium App

regP said:
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
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What does deleting the battery stats via ClockWork do? Do you delete them on each charge?
I was getting great battery life and then I used the calibration software and I'm getting good, but slightly less great battery life. Does uninstalling/freezing that app do anything or once it's calibrated, it's done?

The phone has a dual-core processor, and the best GPU you can get in a phone these days, so you can't expect it to get super battery life unless you never use the phone much. I did the calibration once, and have been able to go all day under moderate to heavy use. All day being 8am-7pm and still having ~20% charge.

Sadly my first g2x that I received wasn't able to go through more than 4 hours of standard use even after fully charged the 2nd time. I sent it in last Friday for exchange and now I'm waiting for the 2nd g2x to be send to me. Well see how it goes by then.

@himmelhauk - I noticed in your signature that you have the Paul O'Brien fix... I saw in that thread that that noticeably increased speed/smoothness, but I haven't heard anybody talk about its influence on their battery. Have you noticed a difference in your battery life after making that tweak?

Me
I only calibrated once, and that plus some other simple tweaks i saw great results. I usually get about 20+ hours of medium use(A few calls, non-stop texting, occasional game or youtube video, and checking email every couple of hours). If you want to see what I did you can click the link in my sig.

lobsterhead said:
What does deleting the battery stats via ClockWork do? Do you delete them on each charge?
I was getting great battery life and then I used the calibration software and I'm getting good, but slightly less great battery life. Does uninstalling/freezing that app do anything or once it's calibrated, it's done?
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it gets rid of the battery information stored within the os so that the phone reads the battery charge correctly. this was common practice for vibrant owners after flashing a new ROM. I've seen people saying that this phone has horrid battery drivers so I dunno how that will effect the battery stats but after a factory reset and deleting the stats my battery is double what I was getting on my vibrant.
I only do this after flashing a new ROM or in this case upon getting and setting the phone up. I would do it again if I swapped the battery for a different one also. just charge to 100%, reboot into clockwork, advanced menu, wipe battery stats, done. it DOES NOT increase battery life. it only allows the phone to read the battery more accurately which would keep the phone from thinking its dying when it still has considerable charge left. that's why you hear about people seeing their battery life read 1% yet the phone last for hours.

I only calibrated once because I realized the values were off a bit.

Tried every battery trick in the book. If you actually want to use the phone, nothing will help. Android is a battery eating nightmare. Hopefully one day the platform will mature so adults can use it as a business phone. I think I am returning mine or giving it to my kid.

I did a single calibration and am now seeing 20+ hours with decent usage. Fully charge the battery, use battery calibration app to erase settings, let it drain till it shuts itself off, try pressing the power button to make sure there's no remaining charge, then fully charge to 100% with the phone still off (you can tap the power button while its plugged in and off to briefly bring up a battery indicator on the screen with out actually powering up). Its true that lithium ion batteries last longer if they don't go through fully discharge cycles, but thats referring to repeated occurances, not a rare or occasional situation. And when calibrating, draining from 100 to 0 is the best method of getting a good calibration. Additionally, while its healthy to do the mid charges most of the time, about once a month or so you should do a full drain. This helps keep the calibration accurate (remember that android will continue to modify the file, albeit at a greatly reduced level after the initial discharge of a new calibration, hence why that occasional full discharge is valuable). A full discharge once a month won't significantly reduce your battery's life expectancy.

cbowens said:
let it drain till it shuts itself off, try pressing the power button to make sure there's no remaining charge
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Draining a li-ion battery past the safe shut off is an easy way to damage or completely kill the battery. Your phone is set to shutdown before complete discharge for this reason. The full discharge then charge method was for NiCd batteries. This has no use for lithium-ion batteries.

regP said:
Draining a li-ion battery past the safe shut off is an easy way to damage or completely kill the battery. Your phone is set to shutdown before complete discharge for this reason. The full discharge then charge method was for NiCd batteries. This has no use for lithium-ion batteries.
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True, but the method of attempting to power back up won't actually drain it past the safe point. The point is bad calibrations (either from the factory or by an incomplete calibration) can cause the OS to shut the phone down prematurely during your new calibration run (before the actual safe cut off), resulting in the calibration being off scale. When you attempt to power the phone back on, if it is at the true safety cut off, it won't reactivate, where as if the calibration from before was skewed, it will allow it to boot back up and finish draining down to the safety cut off. This is in line with the reports of people having incorrect readings on battery %, where they have a low number, reset the phone, and suddenly seem to jump up 10 or 20%.

lobsterhead said:
@himmelhauk - I noticed in your signature that you have the Paul O'Brien fix... I saw in that thread that that noticeably increased speed/smoothness, but I haven't heard anybody talk about its influence on their battery. Have you noticed a difference in your battery life after making that tweak?
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I honestly don't know if it made any difference on battery life, as I did the battery calibration before I installed the fix. At any rate, I get much better battery life after the calibration for certain.
Sent from my LG-P999 using XDA Premium App

cbowens said:
True, but the method of attempting to power back up won't actually drain it past the safe point. The point is bad calibrations (either from the factory or by an incomplete calibration) can cause the OS to shut the phone down prematurely during your new calibration run (before the actual safe cut off), resulting in the calibration being off scale. When you attempt to power the phone back on, if it is at the true safety cut off, it won't reactivate, where as if the calibration from before was skewed, it will allow it to boot back up and finish draining down to the safety cut off. This is in line with the reports of people having incorrect readings on battery %, where they have a low number, reset the phone, and suddenly seem to jump up 10 or 20%.
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I dunno about this phone but I know the galaxy s can still be powered on after the safe shut off and drained completely. People were doing exactly that and messing their batteries up. I would hate for people to misunderstand your post and end up making the same mistake. So the LG doesnt let you power on after the safe shutdown unless its connected to a charger? If so thats pretty good. In any case its a lot easy to just use clockwork, terminal emulator, or any other app to delete battery stats once your charged to 100%. No need to drain first

regP said:
I dunno about this phone but I know the galaxy s can still be powered on after the safe shut off and drained completely. People were doing exactly that and messing their batteries up. I would hate for people to misunderstand your post and end up making the same mistake. So the LG doesnt let you power on after the safe shutdown unless its connected to a charger? If so thats pretty good. In any case its a lot easy to just use clockwork, terminal emulator, or any other app to delete battery stats once your charged to 100%. No need to drain first
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I hadn't heard about the Galaxy S phones having that issue. Like I said, I came from the Eris and this method was the way to go with that phone, so perhaps its a manufacturer dependent function. In any case, I agree that the cwm method is better, but I meant my post to be accessable by those who may not have taken that particular plunge yet, since it only requires root. Thanks for the info though; its good to know in advanced that the safety shut off being unavoidable isn't a guarentee on all phones (though frankly it should be).
EDIT: Not sure if I'm reading it wrong, but it sounds like you thought I meant to drain the battery before calibrating, which isn't true; all you need to do precalibration is have the charge at 100%. The only time I was suggesting to drain it is during the actual calibration run, so that Android has a full scale of your battery's range. If thats not what you meant, than ignore this edit. Just wanted to make sure I was explaining myself correctly.

Also, if you open your battery cover and look at the battery, it's not suppose to go above 40 degrees celsius, or 104 degrees fahrenheit. I found that the temperature often goes past this, especially when watching movies for extended periods of time, or playing games, which leads to a significant decrease in battery life because heat and li-ion batteries are not a good combination.

andonnguyen said:
Also, if you open your battery cover and look at the battery, it's not suppose to go above 40 degrees celsius, or 104 degrees fahrenheit. I found that the temperature often goes past this, especially when watching movies for extended periods of time, or playing games, which leads to a significant decrease in battery life because heat and li-ion batteries are not a good combination.
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You can use SetCPU to make a profile according to battery temperature and underclock it when it gets to 40 degrees or something. I have profiles for when the screen is off and for temperature.

lobsterhead said:
You can use SetCPU to make a profile according to battery temperature and underclock it when it gets to 40 degrees or something. I have profiles for when the screen is off and for temperature.
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What r ur temp profiles
Sent from my LG-P999 using XDA Premium App

[Q] The best way to calibrate a new akku?

Hello Guys, i bought a new mugen akku and dunno what´s the best way to calibrate it.
There are a few things that are confusing me:
1.Mugen Instructions: "Never drain battery to 0%"
(but that´s required for calibration, isn´t it?)
2.the battery got its full power after a few charges/discharges
(so would it be better to wait to calibrate the akku when it got its full power?)
So finally, should i wait with calibration or do it at the beginning? I think one time is necessary to let it go down to 0%.
So what are your advice?
thx in advance, l-viz

The way I calibrate mine is to discharge it completely so it turns off by itself (normally happens around 1 or 2%) then plug it into the charger and let it charge completely to 100%. Note that the LED will turn green at 90% .. so its not done yet!
Just my 2 coppers...
Sent from my T-Mobile G2 using xda premium

You are just calibrating the battery meter on the phone, not the battery. People constantly abuse the terminology.
You don't need to drain the battery to zero, because the battery meter is not even remotely that accurate in the best of circumstances. Draining to 10 or even 20% is no different than draining to zero.
What CAN happen if you drain to zero, is you you may trip the safety circuit on the battery, and render the battery unable to take a charge, thereby rendering it useless. Its not very likely, and safeguards on the phone are designed to prevent this, but plenty of people on here have had it happen. Full power cycles (draining to zero) also shortens the long term life of the battery. Especially considering there is NO value added to draining the battery to zero, there is no point it doing so intentionally, and taking an unnecessary risk.
Just charge your battery to 100%, let it sit on the charger for a while after full, to make sure its really topped off. Then use the phone until 10-20%. Repeat this a couple times. You can also go into recovery and clear battery stats before you charge/discharge. But I haven't noticed this to make much of a difference.

redpoint73 said:
What CAN happen if you drain to zero, is you you may trip the safety circuit on the battery, and render the battery unable to take a charge, thereby rendering it useless. Its not very likely, and safeguards on the phone are designed to prevent this, but plenty of people on here have had it happen. Full power cycles (draining to zero) also shortens the long term life of the battery. Especially considering there is NO value added to draining the battery to zero, there is no point it doing so intentionally, and taking an unnecessary risk.
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Wow. I didn't know that. Thanks!
Sent from my T-Mobile G2 using xda premium

Draining the battery to a literal 0% is almost impossible. Lithium ion batteries do not allow devices to utilize all the juice in a the battery. Once a device shuts off and tell you the battery is "dead", there's actually a bit more juice that is only used by the battery to prevent the battery's level from becoming too low.
Think of it like space partitions in hard drives. While you can use 100% of a single partition in a hard drive. There will still be space left over in the other partition.
Now what mugen means is to not allow the battery to reach the 0% of the ENTIRE battery. In order to make that happen you would have to discharge the battery until your device doesn't turn on and then NOT charge the battery for a very long period of time. I'm talking weeks and months of no charge whatsoever. Other than that, feel free to allow your phone to die and charge it back up. This in conjuction with deleting your battery stats file will speed up the calibration process.
Hope I helped out.
Sent from my HTC Vision using Tapatalk

UnSungHERO420 said:
Draining the battery to a literal 0% is almost impossible. Lithium ion batteries do not allow devices to utilize all the juice in a the battery. Once a device shuts off and tell you the battery is "dead", there's actually a bit more juice that is only used by the battery to prevent the battery's level from becoming too low.
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What is supposed to happen with the failsafes on the device and what ACTUALLY happens unfortunately are not one and the same. There have been plenty of people here that have let their batteries drain to zero, and then the battery will no longer take a charge.
True, the battery is not actually zero voltage. But its low enough that the safety circuit on the battery will prevent it from accepting a charge. The phone is SUPPOSED to prevent the voltage from dipping that low, but it doesn't always work. So the only way to bring the battery back to life, is with a special battery meter with a "boost" function. Since the vast majority of us do not have access to such a thing, the battery is effectively dead, as buying one is likely cheaper and easier than getting access to such a battery meter.
As I've already mentioned, this is unlikely to happen. But its happened to at least a few people with our phone, and I've seen it happen to other XDA users with other devices. No point in playing probabilities, if it happens to you, it sucks and it doesn't matter how "almost impossible" its supposed to be. As I already discussed, the battery meters on phones are not even close to accurate enough to read single, or even 5% battery increments. So draining to zero is not any more beneficial than draining to 10%. No benefit in draining to zero, so why risk it?

I have learned the hard way that discharging lithium ion batteries below 20% is the fastest way to kill them early! (greatly shorten their life)

thanks 4 replies, a lot of useful knowledge

Does anyone else's max stay on 1% battery for hours?

So my maxx will drain to 1% battery in about 3 days with 3 hours screen time. The thing is once I hit 1% it can stay on 1% and not shut off for hours. Right now its been on 1% for about 7 hours, I have a youtube video going just to see how much longer it will go. Its been playing a youtube video now for about 20 min on 1%.
I just got this phone last week, is this because the system hasn't fully calibrated the battery? Or is the battery defective in some way? Its kind of annoying because you think you are out of battery but it keeps going so I don't really know how much battery I have.

Definitely not normal. I'd do a factory reset to eliminate a software issue and if the issue persists seems like it must be a hardware issue, exchange it

These sound like calibration issues. Can you fully charge your battery and then leave in on the charger for awhile -- like an hour or more? That should calibrate it correctly.

I have never nor will ever let my battery get that low. These batteries don't like to be drained and then fully charged it's not healthy for the battery. I don't let my battery go below 30 to 40 percent if I can help it. Most of the time I let it get to about 50 percent then I charge it.

bigv5150 said:
I have never nor will ever let my battery get that low. These batteries don't like to be drained and then fully charged it's not healthy for the battery. I don't let my battery go below 30 to 40 percent if I can help it. Most of the time I let it get to about 50 percent then I charge it.
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not to be rude but where is you information or evidence backing your statement? this goes against everything i know and i certainly always allow my battery to fully die then i fully charge it over night while it is off, i believe charging at 40 percent fools the battery into thinking that is the end of the battery's daily life span and therefore dying prematurely due to it believing that 40 percent is the end.
I do not have any real evidence except i've gotten exceptional battery life with my Ultra after allowing a full cycle (draining all the way and then fully charging while powered down)...i have gotten just under 32 hours with 4 hours and some odd minutes screen on with about an hour of voice calls and random other usage such as tapatalk browsing, internet, texting and maybe some email or youtube....i occasionally play some games like the new CoD Strike Force

ahjee said:
not to be rude but where is you information or evidence backing your statement? this goes against everything i know and i certainly always allow my battery to fully die then i fully charge it over night while it is off, i believe charging at 40 percent fools the battery into thinking that is the end of the battery's daily life span and therefore dying prematurely due to it believing that 40 percent is the end.
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The best source is battery university. Here are a few good links. In the first, look at the third column (Li-ion), as that's the battery pack in the Maxx/Ultra/Mini
http://batteryuniversity.com/learn/article/how_to_charge_when_to_charge_table
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
From the second link (emphasis mine):
Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life, other than to calibrate the fuel gauge on a smart battery once in a while.
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doogald said:
The best source is battery university. Here are a few good links. In the first, look at the third column (Li-ion), as that's the battery pack in the Maxx/Ultra/Mini
http://batteryuniversity.com/learn/article/how_to_charge_when_to_charge_table
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
From the second link (emphasis mine):
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And boom! All the I have known through all the androids I have has been wrong lmao. I really appreciate you posting this....all the years of trolling forums and reading what everyone is doing or have done to get their battery to last long for a daily cycle...appreciate this.
Sent from my XT1080

So happy I seldom charge up to 100% and leave it sit. I also never let it get super low.
Sent from my XT1080m using Tapatalk

Coming from a Gnex, I have a charger within 3 feet of me everywhere I go. I'm trying to break myself of the habit of plugging it in but mine still gets a charge at some point during the day, if only in the car. It has always been my practice to let my phones run down almost to dead maybe once every couple of months. I feel like it keeps the phone's battery meter calibrated although I have nothing to base this on.
Sent from my XT1080 using Tapatalk