How long without battery discharge advised? - Xoom Q&A, Help & Troubleshooting

I have a Xoom in my bedroom to use as 'smarttv' via the hdmi. Do I need to discharge the battery sometimes or can I just leave it plugged in indeterminate?

I would discharge it at least once a week.
But, that's just me.
Sent from my SAMSUNG-SGH-I957 using XDA Premium HD app

That's a good idea, like 1~2 times a week
"This Story Ends Where It Began"

Lol I believe once a month is better....

Tnx guys. I'll go with once a month. Seems reasonable.

Fully discharge it once a month. This may seem contradictory, but hear us out. While lithium-ion batteries shouldn't be discharged regularly, most modern batteries are what's known as "smart batteries", which means that they can tell you how long you have until your battery dies (e.g. "2 hours, 15 minutes remaining"). This feature can get miscalibrated after a lot of shallow discharges. So, manufacturers recommend fully discharging your battery once a month to make sure this stays accurate.
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Well there you go, lol. As people say, Li-ion batteries don't need to be discharged, just calibrated once a month...

Check this out OP.
https://play.google.com/store/apps/details?id=com.nkahoang.screenstandby
it turns off your back light so you don't have to waste power burning the screen all the time. Works on my Xoom just fine with EOS146.
Sent from my SGH-I957 using XDA Premium HD app

Eun-Hjzjined said:
Check this out OP.
https://play.google.com/store/apps/details?id=com.nkahoang.screenstandby
it turns off your back light so you don't have to waste power burning the screen all the time. Works on my Xoom just fine with EOS146.
Sent from my SGH-I957 using XDA Premium HD app
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Thanked. Perfect solution!

Related

[Q] Apps to stop battery charging at certain percentage?

are there any apps out there that could stop battery charging when the battery is charged up to etc. 80%? thanks
c19932 said:
are there any apps out there that could stop battery charging when the battery is charged up to etc. 80%? thanks
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Unplug it at 80 ?
Sent from my LG-P999 using XDA App
OhhCoreey said:
Unplug it at 80 ?
Sent from my LG-P999 using XDA App
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I too would love something like this - Something that would stop charging at 99% so that stupid damn popup box (Please unplug your phone to save energy) doesn't pop over my clock and stay on screen ALL NIGHT.
Unfortunately, i'm pretty sure that the charging is a hardware thing - so i don't think there's anything out there that can stop it short of unplugging.
OhhCoreey said:
Unplug it at 80 ?
Sent from my LG-P999 using XDA App
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.... obviously I'm looking for an app to do it automatically. No need to make pointless post like you did.
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c19932 said:
are there any apps out there that could stop battery charging when the battery is charged up to etc. 80%? thanks
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What would be your purpose?
c19932 said:
.... obviously I'm looking for an app to do it automatically. No need to make pointless post like you did.
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What is the purpose ?
Sent from my LG-P999 using XDA App
if your trying to make your battery last a long time just plug it in before you hit 20% charging to 100% is not going to be a big deal. today's li-ion can take alot of abuse just dont drain them dead and expect them to live very long
Yeah I wouldn't worry about charging to 100%. I have over a dozen lithium batteries for my flashlights, and I keep them all near 100% most of the time.
Charging Li-ion battery above 4.2v is bad.
This app you asked about is very important. Charging a battery more than 4.2 volts dramatically shortens its recharge cycle numbers. I measured my battery volts, found that 4.2 volts is achieved around 85%.
An app that would prevent charging over 80% will be great.
Thanks.
Any news, any app which stops charging at 80% ?
shilent said:
Yeah I wouldn't worry about charging to 100%. I have over a dozen lithium batteries for my flashlights, and I keep them all near 100% most of the time.
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You all make foolish observation based on you personal use of some batteries, of course this is not a reliable info.
You learn in basics of electronics that there is a quantity of energy that it is supposed to be put in a battery for storage, extending it's battery life, and also. Cientific studies show that maintaining your battery near this spot is healthier, so the app wold be pretty useful.
And no, comments like "I've had plenty of batteries, I make bad use of them and after a year they're just fine" doesn't disqualify cientific research.
This apps works awesome! Until this week, when the latest March security update came out, and broke it for Nexus's...Nexus'...Nexi...? lol. But it might work perfect for you if you are not on a Nexus, or if you are, and you're not on the new march update, you're probably fine!
https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002
Oops, I spoke incorrectly. It was NOT the march update that caused it to stop working. It works fine, it was another app causing the conflict. I should have corrected this post sooner.
HikingMoose said:
This apps works awesome! Until this week, when the latest March security update came out, and broke it for Nexus's...Nexus'...Nexi...? lol. But it might work perfect for you if you are not on a Nexus, or if you are, and you're not on the new march update, you're probably fine!
https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002
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Works perfectly fine. Thanks!

New 2750 mah battery, best way to break it in?

Hey guys I just upgraded to the extended battery and was wondering the best way to properly break in and how long to charge for the first time, any help would be appreciated thanks
Sent from my ADR6400L using XDA Premium App
The best way I've seen, in my experience, to "train" a battery is to use it until it dies and then leave it charging overnight.
Yeah I would just let the battery do a couple charge and discharges
z06mike said:
The best way I've seen, in my experience, to "train" a battery is to use it until it dies and then leave it charging overnight.
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No need to do that with lithium batteries, they have no memory. This practice is from the old days of nickel cadmium batteries.
Sent from my ADR6400L using XDA App
funkybside said:
No need to do that with lithium batteries, they have no memory. This practice is from the old days of nickel cadmium batteries.
Sent from my ADR6400L using XDA App
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That may be true of the battery but is not for the phone.
Li battery's don't have a liner discharge and each battery has a different personalty lot to lot.
The phone learns the curve of the battery through discharge, so letting it discharge completely once or twice helps the phone more accurately display how much battery is left.
Oh okay guys, thanks fyi this battery is a huge improvement, I def recommend it, I actually used my phone quite a bit and from all day use only used 27 percent of battery and had data on, normally with barely any use id lose around 60 percent if not more with data off.. def like my thunderbolt again
edit: I'm on 3g only so I don't know how battery life would improve on 4g..
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just to warn you.. i dont know what rom you are using, but keep an eye on the battery gauge while you are actually using the phone and make sure it's not 'sticking'.. i was running froyo bamfs on my extended and my percentage wouldn't properly update and i would have to restart it to update it or it would jsut randomly show up after a while... anywho i ended up going to GB and back to the stock battery, i hate how f***ing big that stupid thing is... its like holding a house phone.
You should probably clear battery stats and run a battery calibration app so it doesn't stick
Drive it like ya stole it!
Sent from my ADR6400L using XDA Premium App
Yeah I always calibrate with every new rom install, but went ahead and did it on the new battery once I was at 100, the battery isn't so bad once you get used to it, the case can have a big difference on the feel of extended battery.
Mostly I love the fact I can use the phone to the fullest and not have to sacrifice anything and still have 70 percent at the end of the night
Sent from my ADR6400L using XDA Premium App

Battery issues anyone?

Had my baby for a little over a year and a half, been nothing but a great phone in that time. This is where the problem starts... I'll be using it like normal, texting and surfing, and will have 98% battery, the phone will shut down, and when it decides to start back up, I will have 14% battery or less.... But it will go up if I leave it alone..... I've tried wiping the battery stats, even charging with the phone off, nothing is working. I will attach screenshots so you can see what's up.
Sent from my SGH-T959V using xda premium
foxxx5oh said:
Had my baby for a little over a year and a half, been nothing but a great phone in that time. This is where the problem starts... I'll be using it like normal, texting and surfing, and will have 98% battery, the phone will shut down, and when it decides to start back up, I will have 14% battery or less.... But it will go up if I leave it alone..... I've tried wiping the battery stats, even charging with the phone off, nothing is working. I will attach screenshots so you can see what's up.
Sent from my SGH-T959V using xda premium
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Your battery is bad. Same thing happened to me, I recommend just buying a new OEM battery from a reputable dealer on Amazon, that's what I did. Try setting it down on a table and push on one side and if it rocks back and forth its bad. Or you can just look at it and see its swollen
Mine did that and it was just a bad battery. If you take the battery out and place it on a flat surface you may notice that it rocks left and right. If it rocks a lot or if you feel the middle and it feels swollen it may be symptoms of a bad battery.
Sent from my SGH-T959V using xda app-developers app
Same thing has been happening to me for the past two days. I just took out my battery and sure enough it is swollen. Thanks for input!
edit: Is it dangerous to keep using it like this for the next few days until the new battery comes in?
brenduh said:
Same thing has been happening to me for the past two days. I just took out my battery and sure enough it is swollen. Thanks for input!
edit: Is it dangerous to keep using it like this for the next few days until the new battery comes in?
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It is dangerous because battery acid can get on you and cause sever skin irritation. You can continue like this for 1 to 2 days MAX until you get your new battery. Try not to use it because using it more will cause it to swell more, DUH try to only use it for emergencies and then once you get the new battery clean the terminals and you'll be good to go
I used mine got a while like that because i didn't know it was the battery lol
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Thank you all, I wasn't sure what it was cause I can still pull over a day of battery life when it wants to lol. Looks like I'm on the hunt for a new one
Sent from my SGH-T959V using xda premium
I'm curious about charging habits of the people who have bad batteries. I have had my phone since the day it came out and my battery is still fine. I never let it get below 30% unless I'm testing a new ROM. Killing lithium ion batteries is really bad for them. So how many of you drain it all the way on a regular basis?
I'm still using my old vibrant battery (at times). I don't think that it's as strong as the spare that I purchased a few months ago, but, is on par with the 18 month old battery that came with the phone. I zap them all the way down a lot of the time (then swap to a fully charged one). I do(try) to recharge to full before use though.
Mine does it but only when I'm using wifi or data could that still be a bad battery
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hechoen said:
I'm curious about charging habits of the people who have bad batteries. I have had my phone since the day it came out and my battery is still fine. I never let it get below 30% unless I'm testing a new ROM. Killing lithium ion batteries is really bad for them. So how many of you drain it all the way on a regular basis?
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I run mine down to 1 percent on a daily basis. Never let it die though. I was under the impression that if you let it drain to zero you're asking for trouble. I could easily change my ways though.
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Hechoen.......I use mine till under 10% or so and then full charge it. Been doing that over a year now. My wife however plugs hers in off and on throughout the day without letting it full charge all at once and she has a bad battery....
Sent from my Slim ICS ultra modded Galaxy S 4G
Shallow discharge cycles are generally accepted to be better for Li-ion batteries than deep ones.
Posted from my SGS4G, thanks to Team Acid development
codealarms said:
I run mine down to 1 percent on a daily basis. Never let it die though. I was under the impression that if you let it drain to zero you're asking for trouble. I could easily change my ways though.
Sent from my SGH-T959V using xda app-developers app
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That is probably a bad idea. I would try to plug it in around 15-20% with 20% being the best time. According to the batteryuniversity website 20-80% is ideal for li-ion batteries because it keeps the heat down. Charging from less than 15% creates heat because that is a low level and takes a bit longer to charge from therefore exposes the battery to more heat. A good charger and battery will shut off the charger once it hits 100% and only allow for a trickle charge if the battery drops below 100%. But I have seen my phone get hotter from about 85% to 100% if Im using it ie: plugged in and streaming music or using navigation.

Battery increased while not charging, normal?

Can anyone explain this? Last night my phone GAINED 20% battery while I slept. How is this possible? See the pic, phone was NOT plugged in......????
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smolck said:
Can anyone explain this? Last night my phone GAINED 20% battery while I slept. How is this possible? See the pic, phone was NOT plugged in......????
Sent from my HTC One XL using xda app-developers app
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ummm.. WHAT, lol.
Closest thing i've had to that is, phone says 85%. boot into recovery or shutdown phone, restart and it says like 90%
are you good at photoshop? :silly: :cyclops:
absolutelygrim said:
ummm.. WHAT, lol.
Closest thing i've had to that is, phone says 85%. boot into recovery or shutdown phone, restart and it says like 90%
are you good at photoshop? :silly: :cyclops:
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Yea, note the significant spike at 70%, that was from plugging it in to charge. So you can see the uptick overnight was more gradual
Sent from my HTC One XL using xda app-developers app
smolck said:
Yea, note the significant spike at 70%, that was from plugging it in to charge. So you can see the uptick overnight was more gradual
Sent from my HTC One XL using xda app-developers app
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I figured it out.
Or maybe there was some electromagnetic field given off by something that charged your battery? (which I HIGHLY doubt)
Battery meter =| battery charge
The meter reading is only an approximation and can get confused at times. This is why you can see the apparent charge drop 20% or more after a reboot. I can't say as I've ever seen it increase like that but I'm sure it's possible. Something was probably going on in the background that screwed it up.
Sent from my Nexus 7 using Tapatalk HD
I agree with iElvis. Its just a metering correction. The voltage didn't actually increase. Just the approximation of voltage to percent battery, which is just a relative number anyway, not a real "measurement".

Laza 3800mAh Battery + Cover

Since I couldn't find any detailed information or pictures of the Laza 3800mAh Battery + Cover and the Laza Smooth Case so I decided to purchase them both for $40.47 on Amazon. Even though my phone is white and the back cover is black, it's unnoticeable once the case is on.
I cannot post links yet since I am a new user but I will post them in a bit. I have compiled a few images of the battery, cover, case, and phone. If you have any questions please feel free to ask them.
Here is a youtube video I recently made regarding the cover, case, and battery. Enjoy! (4/10/13)
https://www.youtube.com/watch?v=33OTOpVixsM
Here is an unboxing: (4/15/13)
https://www.youtube.com/watch?v=pz6867yq5zc
CLICK HERE TO SEE BATTERY LIFE
I accidently wrote Zala instead of Laza in the pictures. -.- Rookie mistake. (4/10/13)
what about performance (battery life) ?
Thanks for sharing your experience !
Re: Zala 3800mAh Battery + Cover
I'm still in the process of testing it and documenting it. So far I get over 16 hours with more than 30% still remaining. You can easily get 24 with about 4 hours of screen time. You can even push it to 5 if you watch a movie. But I think spending that much time on your phone is unnecessary.
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Re: Zala 3800mAh Battery + Cover
I've had the same battery for a few months now, I get a whole day + with heavy use. Mixed calls/Web and games throughout the day and 2-4 hours of Pandora depending on how long I'm in the gym
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Re: Zala 3800mAh Battery + Cover
I've had this only for a few days but I can tell its a good investment.
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Re: Zala 3800mAh Battery + Cover
Spikebrian said:
I've had the same battery for a few months now, I get a whole day + with heavy use. Mixed calls/Web and games throughout the day and 2-4 hours of Pandora depending on how long I'm in the gym
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Dang, you're spending 2-4 hours in the gym everyday? You're either freaking massively strong, or you're looking at yourself in the mirrors too much.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Re: Zala 3800mAh Battery + Cover
bps119 said:
Dang, you're spending 2-4 hours in the gym everyday? You're either freaking massively strong, or you're looking at yourself in the mirrors too much.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
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even pro power lifters don't spend that much time at once... your either over working or you stand around and talk
of course I could be wrong and will never know as this is the internet, but that's my experience anyway lol. Even the great Arnold spent no more than 1 1/2 hours. Granted, he worked out twice a day, but were talking one shoot here
Re: Zala 3800mAh Battery + Cover
The first 2 pictures show the device always on WiFi. I easily got a day and a half with way over 7 hours of screen time. The next 2 pictures show the device with about 8 hours on 3g and a 2 hour phone call. This made the battery last only 18 hours but I still consider this a full day. Great battery, buy it if you don't think the stock one is good enough for you!
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Do you mean Laza*? Lol
bps119 said:
Dang, you're spending 2-4 hours in the gym everyday? You're either freaking massively strong, or you're looking at yourself in the mirrors too much.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
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Believe me it's an addiction, between my main lifts for the day, core and cardio, the hours add up.
If you worked out regularly you would understand.
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icenight89 said:
even pro power lifters don't spend that much time at once... your either over working or you stand around and talk
of course I could be wrong and will never know as this is the internet, but that's my experience anyway lol. Even the great Arnold spent no more than 1 1/2 hours. Granted, he worked out twice a day, but were talking one shoot here
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Do you even lift bro? I can spend 2 hours in the gym easily. On a more serious note this is about the battery not about working out.
Sent from my SPH-L710 using xda app-developers app
godbilla said:
Do you even lift bro? I can spend 2 hours in the gym easily. On a more serious note this is about the battery not about working out.
Sent from my SPH-L710 using xda app-developers app
Click to expand...
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Bench: 275
Dead lift: 390
Squat: 450
Dumbbell Shoulder Press:100
Curl:65
All for reps @ 5'11 194, 16% so I gotta lose a little more lol
But back on topic im not a fan of these batteries, yes they add significant life to your phone but at the tradeoff of several ounces and significant bulk. Extended batteries don't fit into pockets too well in my experience
Thanks
Thanks lol, don't know how I missed that.
bluerap04 said:
Do you mean Laza*? Lol
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I had a good laugh
Thanks for your review though. I've ordered this setup as well, it comes in next week.
I think this tip posted by user 'hitekredneck' in another thread was so good it might as well be posted in here too. I've used this tip with the stock battery and I'm having a big improvement in how long it lasts. Running CM10.1
hitekredneck said:
No, I use nothing at all. Just best use practices and common sense. One more thing I might mention. After doing the overnight charge routine I always shut my phone completely down and let it sit for a minute or two before starting it back up. If you use CPU Spy to check deep sleep cycles you will see why. If I do not shut down as mentioned my phone will still go into deep sleep but not as consistently, nor for as long, as it does when I do the shut down and restart after charging. Also, when powering on, if you have to wait for more than 3 or 4 seconds holding the power button before feeling the device vibrate, pull the battery for 30 seconds, put it back in a try again. Deep sleep is never consistent for me when I have to hold the button down for 8-10 seconds before I feel the vibration signaling the startup sequence.
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godbilla said:
Do you even lift bro? I can spend 2 hours in the gym easily. On a more serious note this is about the battery not about working out.
Sent from my SPH-L710 using xda app-developers app
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Click to collapse
That's way too long for one session. Some research would explain why. Yes, I lift bro.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
BRO DOWN
godbilla said:
Do you even lift bro? I can spend 2 hours in the gym easily. On a more serious note this is about the battery not about working out.
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Click to collapse
xcrazydx said:
That's way too long for one session. Some research would explain why. Yes, I lift bro.
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NFC laza
It was not commented on so I figure I would add my two cents in:
The Laza battery has a NFC coil in the back of the battery, just like the stock one. Some of the cheap extended batteries leave this feature out.
After testing the Stock Battery NFC coil vs the Laza Battery NFC coil I can confidently say:
There is no difference in pick up distance or read/write speed on a Type A (ISO/IEC 14443 type A) Mifare 1k chip ( same thing as a Samsung Tec-tile)
Yes and No
When I ordered my battery they were out of stock of the NFC batteries. So instead of waiting a month for them to ship the NFC battery I asked them to ship me a non-NFC battery. So sadly I don't have NFC capabilities =(.
davolesh said:
When I ordered my battery they were out of stock of the NFC batteries. So instead of waiting a month for them to ship the NFC battery I asked them to ship me a non-NFC battery. So sadly I don't have NFC capabilities =(.
Click to expand...
Click to collapse
I ran into the same thing ... But it took me filing a claim a claim to find out after 3 weeks of waiting had to do a refund
Check Out Video!
Please check out the video I recently made on this: https://www.youtube.com/watch?v=33OTOpVixsM

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