Database Users

How I nearly tripled my battery life!

If you just wanna see my tips then skip over the next few paragraphs lol!
Hi! I am not sure if this exactly has been posted already, or if it's common knowledge and I am just slow lol, but the last couple days I found out how to maximize the battery life on my phone by (imho) a huge amount. And I wanted to share with the community.
So before I did this, I'd generally get maybe six to eight hours of uptime before the battery was critically low. This was really frustrating because by the time I got home from work my phone would be almost dead. So I'd charge it in my car for a little bit, but then when I went out I'd have to turn off Wifi, GPS, Bluetooth, brightness all the way down etc. just to have enough battery to survive the night.
But now I managed to get 18-24 hours out of a single charge, without having to manually touch the settings too too much (GPS/Bluetooth when I need them.) Now I think a lot of this depends on your personal usage, but for me this worked great. And here is how I did it:
1. Disabling/making less frequent updates in apps. For me this was Twidroid, Facebook, and NewsRob. I realized that I keep notifications off for these apps (I don't need to see a notification everytime someone I follow tweets you know?) and that even when they were all set to auto-refresh every 30 minutes or whatever, I STILL always hit refresh when I went in anyway. So I disable automatic updating. Obviously this depends on your usage, but for me, I didn't need up to the minute social networking information, and manually refresh anyway. But I went through all my apps that updated automatically and changed the setting.
2. Task Killing. In a perfect world, Android would efficiently manage it's own app load, but unfortunately the world isn't perfect. I found that if I know I'm going to be putting my phone down for a while, take a second and kill all the runnings apps. I use Astro, but there are countless apps that can do this for you. This is something I don't do frequently, but for example, if I'm going to go to bed and I don't have my charger, but want my phone on in case of an emergency, I'll kill all the running apps.
3. Brightness. After weeks of changing it back and forth because I don't really love the way it auto adjusts, I just said f**k it and put in auto. While sometimes the level of brightness it selects seems a little whack, it's definitely saved battery life. And saves me the trouble of changing it myself. I also found that setting the timeout to 15 seconds seemed to improve battery life.
4. Juice Defender. You can find this app on the marketplace. It has two modes, easy and advanced. If you want, you can go into the advanced and set schedules and all kinds of stuff. But for me, I just went into easy and hit enable. From what I understand, what this does is that if the screen is off, it disables network access for 14 minutes, turns it back on for 1, then off again for 14 etc. So, something like Gmail which is push will only be able to access the network every 15 minutes. Unless you are on WiFi. Now, if you NEED push e-mail and don't have WiFi, this isn't a very good solution. But according the stats in the app itself this has given me a 99% increase in battery life, and I believe it.
5. The trackball. This is perhaps the weirdest of my findings. The trackball light apparently can DESTROY the battery life. The other morning at around 80% I let my alarm on the phone go off and didn't stop it, so the trackball was flashing really fast. Without a couple hours the phone was completely dead. Nuts right? So I found that if I disable the trackball light when I know that I won't be able to dismiss my notifications quickly (like in a meeting or sleeping or whatnot) I'm able to avoid this happening.
6. GPS/Bluetooth. Again, this might seem very case specific, but I use bluetooth ONLY with my rokr headset when I'm on campus at night, and I use GPS only for navigation. So I keep the off when I'm not using them. With the power strip widget this isn't very difficult.
Anyway, that's it really. Like I said, maybe this is all common knowledge and I am just stupid haha. But I figured if not, I was pretty thrilled to go from 6 hours to 24 hours without having to do too much. BTW, some weird things I found didn't have an effect as much as I thought they would - 2g/3g, I actually got MORE battery life when I had 3g enabled. And WiFi was the same way, even when I didn't have a wifi connection, the difference in life with having it on or off was negligible.
Anyway, I hope this is helpful! If I remember anything else I'll add it.

I really like this guide and I'm going to use it when I get my n1. I like all (and will try) of the steps except #5.. the trackball notifications is just too sweet to ever turn off imo. Thanks for the guide.

I'm really surprised to hear that your LED light in the trackball destroyed your battery life

I don't bother killing apps anymore. Since they're not in focus their not using the CPU so whats the point. (right?)
I dont have rubbish notifications on either, nor bluetooth/GPS unless needed. Ive got auto brightness on too.... might try juicedefender in future actually, it does sound good.
So what did you triple your battery life from anyway... 12 hours?

cymru said:
So what did you triple your battery life from anyway... 12 hours?
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only about 6-8 hours.
crachel said:
I'm really surprised to hear that your LED light in the trackball destroyed your battery life
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I was too but I duplicated that scenario a few times to make sure. Also, it might matter that I am running trackball succession and color hacks.

Trackball succession is killing your battery, not the trackball light.

only about 6-8 hours.
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Oh....
Mines gets over 48 hours no problems anyway.

cymru said:
Oh....
Mines gets over 48 hours no problems anyway.
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Geez, whats your secret?

ChillRays said:
Geez, whats your secret?
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I second that, holy crap lol.

cymru said:
Oh....
Mines gets over 48 hours no problems anyway.
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!!! Were you hit by lightening as a child or something? I can only conclude your natural charge is keeping it going :->
Also - OP - nice set of tips - thanks

cymru said:
Oh....
Mines gets over 48 hours no problems anyway.
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Click to collapse
Wow... I only get that good of a battery life if I turn my N1 off!

Are you guys being serious?!
I am indeed consistently getting 48 hours battery life...

cymru said:
Are you guys being serious?!
I am indeed consistently getting 48 hours battery life...
Click to expand...
Click to collapse
48 is on the high side of things... I usually go to bed with about 40% remaining, and put it on the charger overnight... I get up at 8AM and go to bed around 12AM. So I am getting about 26 hours out of mine.
Edit:
Accidently typed in 36 when I meant to type 26. Fixed.

I have a noob question, which this forum is how I get most of my N1 knowledge...
Which uses up more battery life, 3G or wifi?
Thanks to whoever replies.. (my best guess would be 3G)

pjcforpres said:
48 is on the high side of things... I usually go to bed with about 40% remaining, and put it on the charger overnight... I get up at 8AM and go to bed around 12AM. So I am getting about 36 hours out of mine.
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That's actually 26 hours.

muncheese said:
That's actually 26 hours.
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Which is still a lot. I'd really like to know how you are doing this. Do you make any voice calls? Do you text/e-mail a lot? Watch videos? Browse the web? Play music etc.?
I mean my usage is based on maybe an hour a day of talking on the phone, and a few hundred text messages, maybe a couple e-mails, frequent twitter/Facebook updates, and maybe a couple hours a day of playing games, watching videos, reading news etc.
I imagine if I just left the phone there it'd be close to 26-30 hours, but not with regular use.

cymru said:
I don't bother killing apps anymore. Since they're not in focus their not using the CPU so whats the point. (right?)
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Click to collapse
Erm, this is not correct, is it?
The whole point of multitasking means things still carry on when not in focus. If you leave everything running, they will all try and use data and CPU cycles, no?

Some nice suggestions there c0wb0ycliche! Thanks.
A couple of other thoughts/suggestions...
1. In the choices of kernels, pershoots is regarded as being excellent with battery life (partly from being undervolted I imagine) and the fact it's also overclocked at the same time ain't so bad either.
2. Not sure how much extra juice is saved by not using a Live Wallpaper, but if we're talking about battery savings here it might as well be said.

I would not be surprised if a large majority of people who get 25+ hrs hook onto wifi networks for a majority of the data usage. When switching to wifi the phone steps down to 2g mode for phone services.
AndyCr15 said:
Erm, this is not correct, is it?
The whole point of multitasking means things still carry on when not in focus. If you leave everything running, they will all try and use data and CPU cycles, no?
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No. Some applications have sister services that do this, but not all applications.

Namuna said:
1. In the choices of kernels, pershoots is regarded as being excellent with battery life (partly from being undervolted I imagine) and the fact it's also overclocked at the same time ain't so bad either.
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Good point, has anyone mentioned SetCPU? If you set up a profile, it will lower your clock speed to 300mhz while the screen is off. Saves quite a bit of power.

no battery life with the 2.2 update

My battery made it to 1:00 o'clock today with the new 2.2 update that i did last night. It normally lasts till 11 - 12 at night. Whats up with that?
FYI - All the same apps,widgets, and settings
**UPDATE**
Doing a factory reset fixed the problem for me!!

opie2l said:
My battery made it to 1:00 o'clock today with the new 2.2 update that i did last night. It normally lasts till 11 - 12 at night. Whats up with that?
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Strange, I'm sitting at 75% after 5 hours off the charger and using it for moderate text usage (probably less than 80 messages today). Usually around this time it's sitting closer to 60%.

i have the .3 update and went from about 24 hours to about 8-10 hours. Battery life cut in half. My friend who has .3 is having same issue too. So much for increasing battery life.

formulabird said:
i have the .3 update and went from about 24 hours to about 8-10 hours. Battery life cut in half. My friend who has .3 is having same issue too. So much for increasing battery life.
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Wow. Have you searched the forum to see if anyone else has the same issue? If not I hope it's not an isolated incident. Then again if it's isolated maybe you can get support on it better...? Good luck finding a solution.

You gave us zero information to help you. So thus, you will not get any help.
There are about a billion threads on here about battery life and how to tweak it. When you flashed 2.2 you will need to do those steps again.

yeah some people are reporting bad battery life after update. most people i know are on .3. don't know if .6 fixes this hopefully we get update soon

I did a test last night. Dropped 13% between 1130 and 3:30am With wifi on (got up cause of baby), then only 10% between 330 and 8am with wifi off. So a drop of only 23% overnight.
That's with one exchange account, one gmail account (both syncing as items arrive), htc news set to not sync, but newsdesk and feedr both syncing. Facebook for htc set to sync contacts only.
Sent from my PC36100 using Tapatalk

I had the same issue on all 2.2 ROMs I tried.. i am now going through the apps one at a time to see which one is the issue.
right now I am 7 hours in and sitting at 75% very light use ( read about 7 emails, 5 new articles and little to no Web surfing). installed 10s so far other than the standard with Fresh latest ROM that is.

I've actually had very good battery life, I'm running the .3 release. Battery life for me has been very comparable to running Baked Snack 9.6, with its underclocking/undervolting power save features. Moderate use of the phone for 8 hours (wifi, browsing websites here and there, one navigation route, texting, bunch of short phone calls, playing some games), my battery was around 65 or so, same as I had before for similar usage.
I did do a full wipe though, and haven't calibrated my battery since updating.

Aridon said:
You gave us zero information to help you. So thus, you will not get any help.
There are about a billion threads on here about battery life and how to tweak it. When you flashed 2.2 you will need to do those steps again.
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Click to collapse
I am just stating a observation on my part. And i know all the little tricks of how to get better battery life. But like i said, before the update i was getting a full day of battery and now after the update i am getting half. With the same settings and the usage on my part.

opie2l said:
I am just stating a observation on my part. And i know all the little tricks of how to get better battery life. But like i said, before the update i was getting a full day of battery and now after the update i am getting half. With the same settings and the usage on my part.
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maybe because some of the htc sync stuff that you might have disabled before re-enabled.
Check that.
-mark

diomark said:
maybe because some of the htc sync stuff that you might have disabled before re-enabled.
Check that.
-mark
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Click to collapse
Yeah, i already went through all the settings last night.

Aridon said:
You gave us zero information to help you. So thus, you will not get any help.
There are about a billion threads on here about battery life and how to tweak it. When you flashed 2.2 you will need to do those steps again.
Click to expand...
Click to collapse
This is not directed at you personally, but at the words you chose to use:
I am sick and tired of "tweaks and settings and cutting things off." I used them and got over 30 hours on both DamageControl and Fresh.
I paid Sprint/HTC good money for this awesome phone (and am committed to pay them a whole lot more over the course of the next 22 months).
While I can understand the 4G thing, why should I have to cut off Data-WiFi-Bluetooth, power down the CPU, not use it a lot in order to get... in short, drive it like a Toyota Prius when then phone is billed as a Maserati? Why should I have to try out this app and that app(Overclock widget, SetCPU, System Manager, Task Killer, Autostarts etc which all use battery too) in order to get the phone to do what it should have done on June 4, 2010?
Most of the battery draining apps and widgets come pre-loaded with sense (i.e. the Favorite widget, Friendstream etc). Why should I have to resort to rooting my phone or not using it in order to get the thing to last all day?
I'm keeping my EVO cause I love the device, but maybe Sprint/HTC need a little of the medicine that Jobs/Apple is getting in the form of lawsuits due to over-promising/under-delivering.
/off_my_soap_box

You should send that rant to HTC and Sprint... I think we all stand behind you on that one.

there are lots of reasons a battery might not last. there are way to many tweaks out there which is why you have to do it yourself.
First set the phone up like you normally have it and test the battery life. if you can live with it your good. if not start looking at the settings. Read the tweaks but don't just take them as golden as everyone is different and uses their phone different. Ask yourself if you real need that setting. (I like my screen time out at 2 min. do I need it NO 1 min is fine). When done with the settings move to the apps. load the flat ROM no apps and run for a hour and track your battery life. then add the apps 1 at a time or in small groups and let run an hour and track. there are was if find what apps are using the CPU or Battery but many do this normally and yet don't effect the battery much. Only way i have found is old school add them one at a time. When you find a bad one decide if you need it or can find a replacement.
I am done with Sense as Launcher Pro Plus is awesome and now with the only Widget I was missing (Calendar). Once I done going through my app list I will create a new thread in General to list the bad application I found unless someone else has or does before I done that is.

From what I have gathered from using .3 that apps auto sync/update on their own now with "always on mobile data" turned off. if you use advanced task killer, do a kill of all apps then turn the screen off. If you wait for a few minutes and turn the screen back on you will notice that apps like news, messages, Twitter, Facebook clock, weather and others will be active. From what I gather the decrease in battery life is from apps like those will send/receive data on 2.2 while on 2.1 apps would not update/sync until you manually refreshed or opened the app, as long as you didn't have "always on mobile data" enabled.
Edit: this reason is why I uninstalled fring. Just too bad I cannot uninstalled qik.

trojandnc said:
This is not directed at you personally, but at the words you chose to use:
I am sick and tired of "tweaks and settings and cutting things off." I used them and got over 30 hours on both DamageControl and Fresh.
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Click to collapse
It is a mini-computer. You don't use it like a "phone" anymore. You shouldn't expect more than 15-20 hours on it. Do you get angry when your laptop runs out of life after 5-6 hours? If you don't want to do tweaks, then don't. Keep a micro-USB at your desk at work and charge it there. I, myself, enjoy rooting so I don't mind tweaking it. I also get 30 hours of life on it due to this. If you don't like to do that, you get what you put into it.
trojandnc said:
I paid Sprint/HTC good money for this awesome phone (and am committed to pay them a whole lot more over the course of the next 22 months).
While I can understand the 4G thing, why should I have to cut off Data-WiFi-Bluetooth, power down the CPU, not use it a lot in order to get... in short, drive it like a Toyota Prius when then phone is billed as a Maserati? Why should I have to try out this app and that app(Overclock widget, SetCPU, System Manager, Task Killer, Autostarts etc which all use battery too) in order to get the phone to do what it should have done on June 4, 2010?
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Click to collapse
Again, you have unrealistic expectations for a smart phone it seems. All I have is Set CPU running on my phone with Fresh 3.0.1 and works just fine. I still use my phone like a "Maserati", it just lowers the CPU when the screen is powered off. That is like saying you want your car to idle when you get home at night until the next morning. It doesn't change how you drive it, just how you store it in the garage.
trojandnc said:
Most of the battery draining apps and widgets come pre-loaded with sense (i.e. the Favorite widget, Friendstream etc). Why should I have to resort to rooting my phone or not using it in order to get the thing to last all day?
Click to expand...
Click to collapse
You don't have to use them though. You can remove friendstream and go with either the twitter or FB update app or go without either and just check facebook like anyone else. As far as favorites go, you don't have to use that either. You can just make shortcuts to each person's phone number on that same screen if you think that is sucking all your battery life. There are always other options or fixes, but again you expect the phone to come out of the box perfect without any customization. You are getting away from what Android really is. Something tells me the Iphone would have been more your liking since it is built around lack of true customization. This isn't a rip, but just saying if you want cookie cutter phone reliability, it is hard to beat Apple. If you want the ability to tinker with the phone, the power to change things, and the power to make your phone yours, then that is more Android.
trojandnc said:
I'm keeping my EVO cause I love the device, but maybe Sprint/HTC need a little of the medicine that Jobs/Apple is getting in the form of lawsuits due to over-promising/under-delivering.
/off_my_soap_box
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Click to collapse
I can understand your frustration, but nothing was ever promised to us on purchase. I don't remember anywhere seeing something saying the battery would last 30+ hours out of the box. Apple had an actual structural issue with their phone, that is why they had the lawsuits and PR nightmare. This is just the phone doing what most would probably expect(at least anyone who had a G1 or Hero or any of the earlier Android phones). You love the device enough to keep it even with your frustration, something tells me it works quite well for you. But I have yet to see any over-promising/under-delivering on the Evo myself.
And no, I don't work for Sprint or HTC. And no offense meant to you as a person, just I didn't understand your motives on your frustration. Guess we will have different opinions on the Evo so far.

diomark said:
maybe because some of the htc sync stuff that you might have disabled before re-enabled.
Check that.
-mark
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I had the same battery problem after updating to 2.2. After 3 hours my battery was at 50%. Normally it'd be at 50% after 9 to 10 hours of usage.
I did find that some settings had been reset. Once I turned off all the crap syncing, gtalk logging in, Sprint Zone, etc my battery usage has seemed to flatten out.
I made it an hour and only dropped 2% which is much more like it. This is all with very little usage going on.

Buy a new battery! Best solution!
No joda!
Sent from my EVO!

very funny just pluged my phone in using flipz newest after 19 hours
make sure you are signed out of googletalk !!

Battery 'Life' tricks

I read about this on a professional site but cannot remember where. Here is what you do:
"To help with battery life you can do these steps EXACTLY:
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 and wait 2 minutes and then TURN OFF and CHARGE for another hour
Your battery life should double. We have tested this on our devices and other agents have seen a major difference as well"
I am still waiting for my phone but I will try this as soon as I get it. I am wondering if this trick applies only to new phones or not? If someone will like to test this please go ahead and give us some feedback. Thanks

no offence but can you tell me how you can charge the device which has been charging for 8 hours? to my knowledge, there are circuits that avoids over-charging in these kind of devices?

You got a point. Like I said, I took this off the net but cannot remember where.

Check out this article: http://blog.gsmarena.com/samsung-i9000-galaxy-s-full-battery-test-ready-–-up-with-the-best/

It's impossible to manage 84h on single charge Or it is possible when you charge phone to 100% then leave it on your desk and don't even touch it.

Im pretty sure I could get up to a week of battery if i didnt use the phone at all. Over night the battery drains 1% max.

rocketpaul said:
Im pretty sure I could get up to a week of battery if i didnt use the phone at all. Over night the battery drains 1% max.
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standby is quoted as 24-26 days. it's sick. screen on is what sucks the power (in addition to sync and background apps).

alovell83 said:
standby is quoted as 24-26 days. it's sick. screen on is what sucks the power (in addition to sync and background apps).
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for me, wifi uses up 65% of the power lol.

I like to ask, how long have you all had your phones? I think the longer or often you charge your phones the better the drainage power.

ive had mine for two weeks

Don't believe everything you read on the internet..
When I was working at an Apple Premium reseller, I nearly exploded with laughter every day at some of the ridiculous rumors I heard, which were obviously wrong to anyone who sold them, but plenty of major sites were reporting they were likely..
Even now, Kevin Rose (the genius who said that he had seen the iPhone and it had 2 batteries) is still saying crap (which 2 years after I left still seems wrong to me), and every site is STILL reporting it as fact.
A lot of the stuff you read on the internet is untrue. This might be a bit true because of battery calibration and such, but I honestly do question it..

andrewluecke said:
Don't believe everything you read on the internet..
When I was working at an Apple Premium reseller, I nearly exploded with laughter every day at some of the ridiculous rumors I heard, which were obviously wrong to anyone who sold them, but plenty of major sites were reporting they were likely..
Even now, Kevin Rose (the genius who said that he had seen the iPhone and it had 2 batteries) is still saying crap (which 2 years after I left still seems wrong to me), and every site is STILL reporting it as fact.
A lot of the stuff you read on the internet is untrue. This might be a bit true because of battery calibration and such, but I honestly do question it..
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Click to collapse
Agreed. After all, if these ridiculous battery "tricks" worked at all, then the physics behind them would be built into the chargers by the manufacturers. Unless you think they are crippling the battery on purpose for no reason? Makes no sense.

[Q]Battery Life

for the pass few weeks i been noticing really poor battery life, and when i say poor im talking about a full charge only lasting 5 hours.
Before on 3/4g on a full charge my phone last about 8 hour 9-10 with light usage
Before on edge on a full charge my phone last about 12plus hours
Now on 3/4g i took my phone off the charger at 11am and it was dead at 1pm
on edge about five hour of battery life... i have to charge my phone about 3-4 time a day just to have enough battery life to get home...
What i want to know is what causing this problem? i check the basic app that use battery life in the back ground, sync, app that update on it open, display... etc etc...

Search this forum for 'suspend process' and use the available applications to reveal to yourself that you're probably experiencing said issue.
Report back and let us know if that's the case!

shlongwoodian said:
Search this forum for 'suspend process' and use the available applications to reveal to yourself that you're probably experiencing said issue.
Report back and let us know if that's the case!
Click to expand...
Click to collapse
"suspend process" lead me to installing WatchDog app. Watchdog App showed me the app that was using up alot of cpu usage. Now we're playing the waiting game

Wow... phone much colder not always warm... the problem was an app that was acting up. Using like 100% of my cpu usage

There ya go! Nice! Yeah, just a coupla quick searches and the usual suspects (e.g. use WatchDog) come up.
You always have to start with a "baseline" - i.e. does it do this out of the box, no apps installed, etc. I have a friend that just posted back to my 36 hours on a single charge saying he only gets 2-3 hours. I can't even begin to speculate what his "issue" is (unless he has defective hardware/battery or just leaves his screen on 100% of the time).
When you strip away the user, the apps, etc. the *only "issues" left are /suspend and /init.
Also, if you're certain it was that one app, it might not be a bad idea to report it to the developer.

shlongwoodian said:
There ya go! Nice! Yeah, just a coupla quick searches and the usual suspects (e.g. use WatchDog) come up.
You always have to start with a "baseline" - i.e. does it do this out of the box, no apps installed, etc. I have a friend that just posted back to my 36 hours on a single charge saying he only gets 2-3 hours. I can't even begin to speculate what his "issue" is (unless he has defective hardware/battery or just leaves his screen on 100% of the time).
When you strip away the user, the apps, etc. the *only "issues" left are /suspend and /init.
Also, if you're certain it was that one app, it might not be a bad idea to report it to the developer.
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Yes man it suck having to walk around with a charger. my phone been unplugged since 2:08 pm and now it 11:58pm and im at 26 percent. The app that was causing the problem was "Runescape Ge" been using it for a while and for it to act up like that the developer will be getting an e-mail from me
Thanks For your help if it wasnt for u my phone was going to get rooted

Charge for first use?

Hi.
I've seen lots of advice in several different ways about charging new tech when you get it.
So I thought I'd try a poll to see what the general consensus is.
1) Charge until light is green before turning it on the first time?
2) Turn on without precharge, but then run completely flat before charging
3) It's a Li-ion battery and it makes no difference
Thanks

SnakeManJayd said:
Hi.
I've seen lots of advice in several different ways about charging new tech when you get it.
So I thought I'd try a poll to see what the general consensus is.
1) Charge until light is green before turning it on the first time?
2) Turn on without precharge, but then run completely flat before charging
3) It's a Li-ion battery and it makes no difference
Thanks
Click to expand...
Click to collapse
Many people will tell you it doesnt matter but I know from experience that it does in fact make a difference. When I got my phone (mt4g) I starte using it right away without charging it, everything seemed fine I had an issue with the screen so I exchanged it and got a new one. This one I charged first for a few hours before even turning it on and it did make a difference. my battery seemed to be holding a charge for longer. When I got another battery I read they recommend charging it fully off for at least 8 hours then when you do power it on let it run down all the way. Do that for the first 5 charges and it will help your battery health in the long run.
Another example is my friend got two of the same phone one for him and one for his gf. He started using his as soon as he got out of the store, hers he charged for her because he didnt see her that night. He said the phones are pretty much set up identically, same software, same services running etc.. and he said her battery lasts noticeably longer than his

graffixnyc said:
Many people will tell you it doesnt matter but I know from experience that it does in fact make a difference.
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Click to collapse
Thanks for the input. Ya, I have heard a lot of stories like yours.
And even if it doesn't always make a difference, it's only 8 hours, so it should be worth it just to make sure, but when you've been waiting since January for an android tablet and you finally get one in April, 8 hours is forever. ha ha
Thanks

Oh, I suppose another related question is how much is fully charged? Apparently modern devices have a current regulator or something in them that stops it from charging past 95% or something? Not sure on specifics, but from what I've read. You can't charge it passed when the green light comes on anyway?
Anyone know more on this?

SnakeManJayd said:
Oh, I suppose another related question is how much is fully charged? Apparently modern devices have a current regulator or something in them that stops it from charging past 95% or something? Not sure on specifics, but from what I've read. You can't charge it passed when the green light comes on anyway?
Anyone know more on this?
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Many new batteries will charge to 90% or 95%, then display the light as "fully charged". They will continue to to charge to 100%, drain back down to 90%, and back and forth in order to not stick at full 100% (aka charging over night).
That being said I've heard a lot of talk about conditioning smartphone batteries etc. and for the most part I haven't seen a lot of evidence to prove that it is necessary. Lithium Ion batteries really don't need conditioning or anything as much as you'd think... that's really an old NiCad thing to do.

I did not charge mine when i first got it, the battery was already at 90% about and i simply used it for a day and a half and now i'm charging it for the first time. i regularly get new electronics devices and i never have better problems personally. battery tech has come up a ways in the last few years.

It's well known by now the Li-ion batteries do better with short, more frequent charges. It is not a good idea to run it down until dead. These batteries also do not have a "memory."

Placebo and old habits keep this myth around.
Sent from my Xoom

I got my Xoom wifi and plugged it in and turned it on. Couldn't wait any longer.
It's an awesome tablet and the battery lasts all day, with constant wifi and playing.
Thanks for the advice guys

MikeyMike01 said:
Placebo and old habits keep this myth around.
Sent from my Xoom
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Well said. Alas, no matter what a sound scientific methods proves some people just won't listen...

I used it right out of the box and have no issued

Thanks for posting this - timely reminder to check up on the latest info on li-ion batteries (given I will be getting my xoom tomorrow).
Here is a summary on lithium ion:
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Appreciate if anyone finds other links that explain it even better but are also as reliable.

I thought of this thread. It's for N1 but if you have some spare time, tons of information in that thread...
http://forum.xda-developers.com/showthread.php?t=765609&highlight=battery+calibration