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I decided to do an experiment this morning. My fiance and I both have Dincs. We're both running SkyRaider 2.0.1. We both have the 1500mah touch pro 2 battery. I bump charged both phones this morning and both went off the charger at 8:30. I cleared my battery stats in clockwork immediately after the bump charge. I didn't clear her battery stats. She had been getting better battery life largely because I use my phone a lot more than she does. That changed today.
The numbers don't lie...
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my phone - battery bump charged and battery stats wiped:
8/3 - off charger: 8:30am
Stats @ 10AM
Uptime: 1.5 hours
Awake: 1.25 hours
% left: 94%
Stats @ 12:30PM
Uptime: 4 hours
Awake: 3.75 hours
% left: 85%
Stats @ 3:45PM
Uptime: 7.25 hours
Awake: 7 hours
% left: 68%
Stats @ 12:30AM
Uptime: 16 hours
Awake: 10.5 hours
% left: 24%
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Fiance's Phone - Bump Charged, battery stats not wiped:
8/3 - off charger: 8:30am
Stats @ 12:30PM
Uptime: 4 hours
Awake: 1.25 hours
% left: 68%
Stats @ 12:30AM
Uptime: 16 hours
Awake: 7 hours
% left: 12%
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I've come to the conclusion that wiping your battery stats is a very important thing to do and will give you hours more battery life. I'm currently losing a little over 4% per hour, which should give me 23-25 hours of battery life. This is a very significant improvement over the 14-16 hours that she will likely get.
I do find it really odd however that my Uptime and Awake Time are so close. This would normally lead me to believe that some program isn't letting my phone go to sleep, but my battery life indicates that isn't happening.
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Day 2: Didn't get rid of need to bump charge. First bump charge actually seemed to take a little longer this morning (over 30 minutes). Second bump was 6 minutes. Had to scrap today since my fiance's phone didn't charge last night. It wasn't plugged into the wall. Doh!
i might give this a try. i'll be interested to see if others try it and see what their results are.
Would I have to clear battery stats every day in order to achieve this additional battery life, or is it only a semi-regular thing?
???
How do you wipe them in clockwork?
Question- did you fully charge, wipe, then drain battery down /all the way/ before re-charging (e.g. phone shuts itself down) or did you charge, wipe, and then let it drain a bit and then just plug it back in the charger at night without letting it shut itself down from lack of battery?
Thanks.
I just tried this earlier as well. I bump charged (charged with power off until led went green, booted all the way up, and then powered off, repeated this cycle like 3 times) and then wiped battery stats in clockworkmod (it's in advanced).
Too soon to see if it makes a difference, and I really didn't have any problems but figured longer is better right
Edit: I now plan to let the phone run until it shuts its self off
partizan81 said:
Would I have to clear battery stats every day in order to achieve this additional battery life, or is it only a semi-regular thing?
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Click to collapse
I doubt it, but don't know for sure yet. I'm tempted to charge it back up now to see if there is a difference in length of time spent bump charging. I hope it shortens it. I won't be clearing either of our stats tomorrow to see if the battery gains comparable to hers stick.
craigmack said:
How do you wipe them in clockwork?
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Click to collapse
reboot into clockwork, scroll to advanced (i believe), then wipe battery stats
Lcsglvr said:
Question- did you fully charge, wipe, then drain battery down /all the way/ before re-charging (e.g. phone shuts itself down) or did you charge, wipe, and then let it drain a bit and then just plug it back in the charger at night without letting it shut itself down from lack of battery?
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Click to collapse
I let it drain itself all the way, then charged it overnight. woke up. bump charged for 1 cycle then cleared the stats.
Doesn't work for me, bump charged this morning then booted to recovery and wiped battery stats. If anything, it appears my battery life is worse and one side effect is I did not have 3g on the first reboot.
s197 said:
Doesn't work for me, bump charged this morning then booted to recovery and wiped battery stats. If anything, it appears my battery life is worse and one side effect is I did not have 3g on the first reboot.
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Your 3g data drop on reboot has nothing to do with wiping your battery stats. It's a known bug in the 2.2 roms. There's also no way that it could make your battery life worse. You're probably just using more heavily today. It's hard to compare one day to the next since your usage levels vary. I know that I use my phone way more than my fiance and comparing the same phones pulled off the charger at the same time is the only way to tell if it makes a difference.
s197 said:
Doesn't work for me, bump charged this morning then booted to recovery and wiped battery stats. If anything, it appears my battery life is worse and one side effect is I did not have 3g on the first reboot.
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I didn't have any problems with 3g on the first boot, and my battery life doesn't really appear to have been effected. I can go about a day between charges, and it stayed the same.... completely anecdotal though and I've only been through one charge.
you should clear stats regardless
Sent from my Incredible using XDA App
vantagejuan said:
Your 3g data drop on reboot has nothing to do with wiping your battery stats. It's a known bug in the 2.2 roms. There's also no way that it could make your battery life worse. You're probably just using more heavily today. It's hard to compare one day to the next since your usage levels vary. I know that I use my phone way more than my fiance and comparing the same phones pulled off the charger at the same time is the only way to tell if it makes a difference.
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Click to collapse
I know about the 3g bug but I've never encountered it, ever, until I wiped the battery stats. Maybe that's just a coincidence.
Maybe the reboot due to the loss of 3g is what drained the battery more quickly initially. My routine is the same every morning. Unplug the phone, turn on pandora, walk ten minutes to work. So I have a fairly even amount of usage for the first few hours since it sits idle after that.
Maybe I'll revise my initial thoughts to say it may not be worse for the battery but I'm definitely not seeing the improvements you are. Can I ask what ROM you're running?
First Time Bumping
I have had issues on and off since I got my Dinc. Running SkyRaider RC3 atm seems worse since I flashed it.... 2.5 seemed better. Doing a bump charge/wipe now and will post later with results. I am a fairly heavy user (I know 'heavy' is very relative) and know that a whole day (about 8am to 8pm) is pushing it for me, but I am lucky to make it till 12pm. I have actually seen it drop to 20% before 11am. During the first few hours of the day, I may check 2 emails, send no more than 3 txt and make one phone call... Seems like a big drain for that.
Weird, I wiped my battery stats today for the first time and also NEVER had a 3g problem when rebooting. Now EVERY TIME I reboot there isn't 3g untill I turn on and off airplane mode. I know the two doesn't seem to be revenant, but it seems like a lot of people are running into the same exact problem. Anyone care to input on this?
Well later on in the day I tried a restart again the the 3g turned on a few minutes after the phone booted. It still hadn't ever taken this long before, but it did come through on its own. Just a little update on my last post. I'm still interested in knowing why though
Well so far so good, but didn't use it much today. 3G bug happens to me every reboot, but comes on in a few seconds. I'm at 54% atm and bumped/cleared at 2pm est its now 10 pm
Sent from my ADR6300 using Tapatalk
If your phone uptime is close or same as the number of hours u have since unplugged, that means it's the usb bug preventing your phone from going to sleep.
What u need to do each time your phone is fully charged (connected to the wall charger or USB cable), u will need to unplug the cable and do a manual reboot.
Otherwise, the phone might still think it is plugged to an external power source and refuse to go to sleep even while your screen is turned off and your phone is idle.
Then u should see using Spare Parts or Battery History App, that your uptime is around 10% to 16% of your total time the phone has been unplugged.
Hi to all....
I just wanted to know how much battery drain you guys have cause my galaxy's battery barely even lasts for a day even though i've calibrated the battery(not just once)!!! :S
Please post your drain if you can and with what type of usage you do cause my drain is insane!!!!
Multiple battery drain posts all over the forum and fixes . read them .
jje
You find a lot of topics about battery drains, please read them. Just as an introduction you must know, that after flashing a new Rom and kernel you'll probably get a stupid battery drain, which means that maybe you have 100% all the time, or in the most of the cases you get a HUGE battery drain. I had the same problem, after installing a new ROM, my phone was sucked... at night with wifi and GPS and 3g turned off it lost 60% battery from 100%, so when I woke up I just noticed that I have 40%. It has been resolved automatically. Now I have 3days battery with no hard usage, but it takes 2 days in almost every cases. I'm now Darky 9.5 and Darky Core kernel.
Sent from my GT-I9000 using XDA Premium App
I don't know if it's my imagination, but since the 2.4.6 update, my battery life has dropped a bit. By the time I get into my office from my morning commute, I'm anywhere in the 65-70% battery life after unplugging from a full charge. I haven't done anything new. I always unplug around 8:30 am when I head out, I do some light chatting with gf, browse some sites, check facebook (usually very briefly), and maybe sometimes do a little reading on my device. By the time I get into the office around 9:30 or 10 AM, I'm usually around the 80-85% area with battery.
Lately, doing the same thing, I'm seeing the aforementioned 65-70%.
Is anyone else experiencing decreased battery life since 2.3.6?
I'm on a Tmobile Nexus S, running stock 2.3.6 (no custom ROMs).
2.4.6 ? .... maybe 2.3.6 ... and yes, I also noticed a slight increase in power consuption after the upgrade. The stand-by is still great .. about 0.8 - 1% per hour.
Sorry, yes I meant 2.3.6.
Thanks for replying Ro_explorer. Is your increased power consumption significant? Seeing 65-70% when I'm used to seeing 80-85% as I get into my office, I find, is a large change. To be frank, the battery life of the Nexus S in general isn't so fantastic to begin with... this hit makes it worse.
Anyone else?
I used to get home with about 40-50% after a whole "normal day" (unplugged at 8AM, and getting back home at ~8PM) .. now (with the same average usage) I'm getting home with ~30-40% ... that why I said "slight increase" ...
Not your imagination, I too have noticed this. I hope the next update, will fix this - as I used to get pretty good battery life (even with over 250 apps).
When I recently updated to the 2.3.6, it caused a bug of continuous reboot (every 1-3 minutes), so I had to do a hard reset - now it works fine, but I only have added back about 15 apps - and the battery life sux!
Downgrade OS' it will be ok.
This is so weird. Why is the battery life worse?
onthecouchagain said:
Sorry, yes I meant 2.3.6.
Thanks for replying Ro_explorer. Is your increased power consumption significant? Seeing 65-70% when I'm used to seeing 80-85% as I get into my office, I find, is a large change. To be frank, the battery life of the Nexus S in general isn't so fantastic to begin with... this hit makes it worse.
Anyone else?
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You want bad battery life? Try an Evo 4g with a Sense rom. I averaged about 6hrs using a 1500mAh battery, in stock form.
The nexus is pretty light on power consumption, if you ask me. I average 15hrs on the stock 2.3.7 rom/kernel combo, with stock battery.
Sent from my Nexus S 4G using XDA App
I'm on 2.3.6 and need to charge every two days. I text a lot and do light gaming. I'm typing this from my phone. Maybe you could drain the battery and wipe battery stats? I'm not even at 50% yet and I charged yesterday.
Sent from my Nexus S using Tapatalk
I also noticed that the battery last less time
I've been waiting to see if anybody else reporting this issue
i noticed a decent increase in battery life going to 2.3.7 and thought that previously the battery life had been fairly poor :\
I am non rooted, and get around 20 hrs on light to moderate use. Again. Stock, non rooted.
How do I recalibrate my battery? I wonder if it could be that...
There are many was to recalibrate. Some involve wiping batt stats, some plugging and unplugging phone several times after charge.
I have always found that using the battery almost all the way down, but not past 5%, and then full recharge conditions it very well.
Oh I've been here to solve the problem
"Why last 2 weeks my Nexus s drain battery so fast ? or I have to calibrate it"
Thank for your notice about update OS to 2.3.6.
I think that's a root cause for me too.
1. Could I rollback to 2.3.4 ,how?
2. Does battery calibration is useful for this case , how?( someone suggest to calibrate when flashing new rom )
Thank you very much..
i want to know who have some methods to do with this stuff
borrowedchief said:
There are many was to recalibrate. Some involve wiping batt stats, some plugging and unplugging phone several times after charge.
I have always found that using the battery almost all the way down, but not past 5%, and then full recharge conditions it very well.
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Click to collapse
Whenever switching roms, kernels, or batteries, i always perform the following :
1. Charge to a true 100% (Battery Monitor Widget will register +0 to +2 mA)
2. Wipe battery stats using recovery (Amon RA has this option for the Evo, not sure about cwm), Battery Monitor Widget, or a dedicated app.
3. Discharge battery to 0% with normal usage. When the phone shuts down, I pull and re-install the battery and power back up (it will shutdown again very quickly).
4. Recharge battery and be on my merry way.
Sent from my Nexus S 4G using XDA App
I found one workaround solution for this issue on
ww.google.com/support/forum/p/Google+Mobile/thread?tid=1684c50cea15282a&hl=en&fid=1684c50cea15282a0004af022e5ed212
Sproogle77 's solution
Problem solved. Using the OS Monitor app, I found that the main culprit was Google Services - the Contacts sync specifically. Even though I had this disabled (only Gmail was being allowed to sync) it was constantly working, apparently trying to fix a location. The message log showed that it was generating continuous debug messages, all about locations - around 10 of these every second.
I have solved the problem by disabling 'Use wireless networks' under the Locations & Security settings.'Use GPS satellites' is still running. This immediately dropped my CPU usage - which had been running around 30 to 40% even when otherwise idle, to around 10%. Google contacts sync is now using 0% of the CPU. The difference in battery life was pretty much immediate and is now back to what it was before - the change in the slope on the battery usage graph is remarkable!
This doesn't really seem like a solution to me, and I don't know whether other aspects of my functionality are being affected, but at least my phone is properly useable again.
I'm testing for 1 day and I think that's working for me.
onthecouchagain said:
This is so weird. Why is the battery life worse?
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One reason is that the new version of the stock kernel removed a speed stepping, so it'll power to higher levels faster, thus using more battery.
rentaric said:
One reason is that the new version of the stock kernel removed a speed stepping, so it'll power to higher levels faster, thus using more battery.
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Click to collapse
That actually isn't the problem. I'm using netarchy's kernel and still get this problem.
My battery life dropped from 16 hours --> 6 hours. the slope on my battery usage life is horrible the system is also awake almost constantly even when I'm not touching it / getting no messages.
I will try the fix suggested on the google support forum and see if that does the trick. sloppy update.
I am running CM10.1.3.1 with the nitest 7/20/2013 kernel and FC19 modem, on an Onite 1900 mAH battery.
I used many of the tips in this post;
http://forum.xda-developers.com/showthread.php?t=2357417
10 hours overnight with minimal usage, my battery now drops to 78% and shows 4 days 15 hours of similar usage before the battery will be drained fully. I've never, since buying the phone new, had better than 26 hours of stand-by time show up with a fully charged battery. I'm now showing 5 days.
Of course, screen usage is still the big impact, so actually using the phone drains it just as fast, but it is nice to know that, if I am not using it, I don't have to keep it plugged in all the time now.
I could be completely wrong about this but...
Have you been rebooting your phone? From what I've read rebooting the phone can throw off the battery stats. Basically the battery storage and usage is all the same its just the reporting thats off. I'm guessing battery stats get readjusted over time if the phone remains powered on.
VS995, Rooted, been running WETA since last January.
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About 2 months ago I noticed whenever my phone got to 15% battery left when I plugged it in it would reboot. I ignored the issue for a while because I rarely let it get that low.
Recently though I notice my battery life getting very bad. Insanely bad. Not even 2 hours of SOT, dying in 3 hours just using hotspot with no SOT. Losing 10% in a few minutes of active use sometimes.
So I tried some battery calibration apps, tried recharging to 100% and draining again. Tried wiping battery stats. Tried different ROMS.
I flashed desolation ROM tonight and the battery life seems to be really good on it but it ended up shutting off at 24% left.
Battery apps say my battery is in good health, but I'm wondering if the battery itself is bad? Any tips or advice or help of any kind is appreciated. Thanks
imucarmen said:
VS995, Rooted, been running WETA since last January.
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About 2 months ago I noticed whenever my phone got to 15% battery left when I plugged it in it would reboot. I ignored the issue for a while because I rarely let it get that low.
Recently though I notice my battery life getting very bad. Insanely bad. Not even 2 hours of SOT, dying in 3 hours just using hotspot with no SOT. Losing 10% in a few minutes of active use sometimes.
So I tried some battery calibration apps, tried recharging to 100% and draining again. Tried wiping battery stats. Tried different ROMS.
I flashed desolation ROM tonight and the battery life seems to be really good on it but it ended up shutting off at 24% left.
Battery apps say my battery is in good health, but I'm wondering if the battery itself is bad? Any tips or advice or help of any kind is appreciated. Thanks
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Click to collapse
Dude the answer is in the question, it's definitely the battery ?.. I've had this problem on my g3 and now on this phone.. One of my batteries dies at 20%
Lol just buy a new battery
Still_living714 said:
Dude the answer is in the question, it's definitely the battery .. I've had this problem on my g3 and now on this phone.. One of my batteries dies at 20%
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Click to collapse
jody2k said:
Lol just buy a new battery
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I just wanted to make sure because I've never experienced this issue before. I even hand my smartphones down to my mother and they tend to get over 2 years of use and I've never had to buy new batteries. Thanks for the feedback
If it drops from 24% to 0 then im pretty sure its a damaged battery try it ypu can buy it for less than 20 dollars on ebay
If it drops gradually in standby you could have also a battery drain bug but this is not the case here