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CM7 battery life Troubleshooting thread

I am loving this rom, but also having HORRID battery life, I am literally dropping 10% every 90 minutes with an extended battery.
27% Cell Standbye
26% Bluetooth
19% Display
Now I keep reading that these might be false readings, but I keep reading this as a response to those having **** for battery life... so maybe they are not false?
Anyone having good battery life show readings like this? Those with bad battery life, what are your readings?

I'm running the CM7 w/the 2.5 radio - I'm in a 100% full time 4G area, but seem to have worse battery life when the 4G radio is on, so I just keep the phone on 3G - if I need the faster data I can always turn it on and off.
I'm running the stock kernal, no overclocking or setcpu type stuff going on.
Would like to hear from folks running this ROM w/killer battery life, what are your settings, tweaks, etc. Please specify if you're running an MR1 or Mr2/2.5 version and/or running the latest OTA 2 radio that just came out like yesterday.
I just turned off my FB sync (I forgot about that). I don't have gmail set up to sync automatically either.
I'm going to do this procedure a little later today and see if it helps, this is for the EVO, but, ya know....
34. "Calibrate" battery - (1) Turn device ON, charge it for 8 hours (or until LED turns green), (2) unplug and turn it OFF, plug it back in and charge for 1 hour (or until LED turns green), (3) unplug and turn it ON, wait 2 minutes, turn it OFF, plug it back in, and charge for 1 hour (or until LED turns green), (4) unplug it, turn it ON, and use normally.
Anybody else try this?
today will be my first full day of work use w/this ROM so we'll see what happens.

Best to keep 4g off if not using it. Also, turn Bluetooth off when not in use.
Sent from my ThunderBolt using Tapatalk

i had horrible battery life the first day - then it got better. then i flashed mr2 official and battery life is really solid. getting like 15-20 hrs with 4g always on, bluetooth on sometimes. one important thing is having a custom lighting table which i will post later.

Bassdj427 said:
Best to keep 4g off if not using it. Also, turn Bluetooth off when not in use.
Sent from my ThunderBolt using Tapatalk
Click to expand...
Click to collapse
I have never, nor do I intend to ever do this. I got an extended battery for a reason. I can go all day and then some on the official roms, and all of the Sense roms.
I am not new to CM7, I have run it on both an Eris, and an Incredible. Both devices got FAR better battery life on CM7.
I am not complaining about this rom, or Slayhers hard work. I simply want to gather information so that we may help him trouble shoot.

Immediate wiper batt stats at 100% this morning on my extended batter will report back with usage and level details
Sent from my ThunderBolt using XDA App

stayin100 said:
Immediate wiper batt stats at 100% this morning on my extended batter will report back with usage and level details
Sent from my ThunderBolt using XDA App
Click to expand...
Click to collapse
This is exactly what I did lol, I had lost 10% in the first 90 minutes, now I am at 58% at 5 hours. I have been streaming google music for 2 hours of that 5 though. I would guess I should have seen an increase in battery usage, but have not.

The battery readings are wrong, I get a full day on 4G with my stock battery and see those numbers for cell standby etc. I use lean kernel though
Sent from my ThunderBolt using XDA Premium App

do you see those numbers for BLUE TOOTH though? We know good and well some numbers are fake, but that does not mean all.
FYI I am now at 37% and 7 hours and 7 minutes... I have not used google music since the last post and I am seeing the exact same battery drain as when I was using it.

I have absolutely horrible battery life when I'm at work (which is basically a bunker). On a normal day, my battery will be dead within 6 hours just sitting there on my desk.
However, when I am at home (great 4G signal), I see my device getting upwards of 16 hours with moderate use.
I will also say that since I upgraded to the most recent radio, I have been having much better battery life at home. Additionally, my phone has stayed much cooler with the most recent RC + new radio combination.

I heard if you change the render fx to n1 calibrated, then you will get like 1 hour extra of battery life. You can change the render fx by going to cyanogenmod settings.

11h32m11s on extended battery 69% left
The other numbers have to be wrong. Theres no way cell standby is the number one battery user.

my cell standby is also showing 30% with the new OTA 2 radio.

I switched to dream kernel (have not wiped battery stats) and am now at 88% after two hours, that puts me at 6% per hour verses yesterdays 10.

_Viper_ said:
I heard if you change the render fx to n1 calibrated, then you will get like 1 hour extra of battery life. You can change the render fx by going to cyanogenmod settings.
Click to expand...
Click to collapse
only works for AMOLED screens.
edit: to be clear, it only saves battery on AMOLED.

so what i have found is that after installing dream kernel and messing with the governor settings... along with being connected to wifi. my battery life has improved tremendously. i wiped battery stats this morning after a full charge and didnt notice any change.. then i flashed the kernel and messed with gov. settings... after rebooting ive noticed a huge huge difference.. just my 2 cents for anyone who had battery issues like me

Yesterday I was able to choke out 20 hours while in a 4G area the entire time.
Running RC 1.2, Imoseyon's leanKernel extreme mode (extremely undervolted and OCd to 1.4GHz) and using the InteractiveX governor.
Also, I just happened to reboot and surprisingly it only took away 1% of my battery. Amazing considering whenever I did that on a Sense ROM, I'd experience a battery loss ranging from 7%-10%.

beeholtz said:
so what i have found is that after installing dream kernel and messing with the governor settings... along with being connected to wifi. my battery life has improved tremendously. i wiped battery stats this morning after a full charge and didnt notice any change.. then i flashed the kernel and messed with gov. settings... after rebooting ive noticed a huge huge difference.. just my 2 cents for anyone who had battery issues like me
Click to expand...
Click to collapse
What settings did you land on as best?

cpu is set max to 368 mhz(very low) but i can crank it up if im doing somethign like playing games or downloading and want speed. brightness is at about 15-20 percent. the dream kernel and mr2.0 radio have made a big diff too. the dream kernel made the biggest. usually when id power off or reboot id lose 6-10 percent same as someone else i saw post. now i lose maybe 1 percent which is a huuuuge difference considering you lose 10 percent just because you reboot. also i try to stay on wifi wherever i go. on 3g i def notice it drain quicker, but i am no expert and there are a lot of people on here who by far outexperience and outknowledge me(my new 2 words) so im sure other people have some suggestions

Morkai Almandragon said:
I am loving this rom, but also having HORRID battery life, I am literally dropping 10% every 90 minutes with an extended battery.
27% Cell Standbye
26% Bluetooth
19% Display
Now I keep reading that these might be false readings, but I keep reading this as a response to those having **** for battery life... so maybe they are not false?
Anyone having good battery life show readings like this? Those with bad battery life, what are your readings?
Click to expand...
Click to collapse
That is strange I am also using CM7 with an extended battery and still have 41% left after 14:56 on battery.
battery use does show
cell standby 31%
phone idle 19%
android system 19%
wifi 11%
dialer 10%
display 6%
voice calls 3%

[Q] Odd battery spikes adding to battery hell

I've been having general horrible battery problems with my Sensation on stock Sense and Miui.us. I just installed HyperSensation and Faux 0.2.3 kernel with a full wipe and reset the battery calibration thinger.
First 2 charge/drain cycles were yesterday (got around 5.5 hours as has been normal for the last 2 weeks) and after the second drain to 1% I plugged in AC and went to bed. This morning I checked Battery Monitor (not the Beta or paid, so I'm aware the mA reading may be incorrect/offset on Sensation).
The graph overnight shows some odd spikes every 50 minutes draining the battery. This is the first night I've been looking at my graphs so I'm not sure if this is regular or a separate issue from my normal battery hell.
I've included a screenshot of everything I could think of including Battery Monitor and SetCPU profiles. Re running apps, some I've never run before, the only other one on the 2nd page was Thumb Keyboard.
I would really appreciate some ideas on my battery life in general, and what this issue is in particular.
Background:
- Horrible battery problems with my Sensation on stock Sense, Miui.us and now with HyperSensation ROM-CM7.1 with kernel faux123v0.2.3r.
- Been getting around 5-6 hours with normal use, no 3G, no wifi, no GPS, no Bluetooth, low screen brightness, etc etc.
- I also uninstalled Gallery as I was getting the sensor usage issue which I thought may be causing my battery woes, but no dice yet.
- I prefer to keep data on at all times (2G) as that's what I use my phone for, so I don't use this Juice Defender function.
Thanks,
P7

P7uen said:
I've been having general horrible battery problems with my Sensation on stock Sense and Miui.us. I just installed HyperSensation and Faux 0.2.3 kernel with a full wipe and reset the battery calibration thinger.
First 2 charge/drain cycles were yesterday (got around 5.5 hours as has been normal for the last 2 weeks) and after the second drain to 1% I plugged in AC and went to bed. This morning I checked Battery Monitor (not the Beta or paid, so I'm aware the mA reading may be incorrect/offset on Sensation).
The graph overnight shows some odd spikes every 50 minutes draining the battery. This is the first night I've been looking at my graphs so I'm not sure if this is regular or a separate issue from my normal battery hell.
I've included a screenshot of everything I could think of including Battery Monitor and SetCPU profiles. Re running apps, some I've never run before, the only other one on the 2nd page was Thumb Keyboard.
I would really appreciate some ideas on my battery life in general, and what this issue is in particular.
Background:
- Horrible battery problems with my Sensation on stock Sense, Miui.us and now with HyperSensation ROM-CM7.1 with kernel faux123v0.2.3r.
- Been getting around 5-6 hours with normal use, no 3G, no wifi, no GPS, no Bluetooth, low screen brightness, etc etc.
- I also uninstalled Gallery as I was getting the sensor usage issue which I thought may be causing my battery woes, but no dice yet.
- I prefer to keep data on at all times (2G) as that's what I use my phone for, so I don't use this Juice Defender function.
Thanks,
P7
Click to expand...
Click to collapse
How did you calibrate your battery? Did you..
Flash Rom
Kill battery to 0%
Charge fully 100% then wipe battery stats? Or did you wipe battery stats as you flashed? Thy could be a major problem
Also you have CPU your max set to 1.56ghz when its charged. That could cause the peak in usage. Especially if you have it set to performance and not ondemand. Those are the only two things that's really stand out to me.
Also check the arhd thread. In one of the last pages (depending on when you get this) there is a link for a fix on battery drain on fauxs latest kernel. Check it out

Thanks rddocke, I will check out the kernel fix. I did wipe, flash rom and reset the battery stats at the same time. I will definitely try your method, I didn't realise I had it upside-down.
As for the spikes, they seem to be continuing today, I can post screenshots later. Given that the major battery user is "Adnroid System", would this narrow my issue down to the built in apps?
On the plus side, with the new setup today on my 3rd battery cycle, I am getting better battery life than before aside from the spikes.

ya the spikes could be do to an auto update, maybe background sync... any things could cause it as long as it isnt a constant high usage i wouldnt worry about it. but if you want to help your situation i would set back my cpu max to 19200 when charging, and clock back to 1.2 for daily use, switch your goveners to ondemand and get them off performance.
basically whatever its doing at those times its running at the highest point your cpu can handle. adjusting wont solve your problem but it will reduce the amount of battery it uses
idk its hard to tell android system is always going to be the juicer, that and sense. nonsense for arhd could help you out too. i particularly like sense tho
hope i helped

rddocke said:
ya the spikes could be do to an auto update, maybe background sync... any things could cause it as long as it isnt a constant high usage i wouldnt worry about it. but if you want to help your situation i would set back my cpu max to 19200 when charging, and clock back to 1.2 for daily use, switch your goveners to ondemand and get them off performance.
basically whatever its doing at those times its running at the highest point your cpu can handle. adjusting wont solve your problem but it will reduce the amount of battery it uses
idk its hard to tell android system is always going to be the juicer, that and sense. nonsense for arhd could help you out too. i particularly like sense tho
hope i helped
Click to expand...
Click to collapse
I'll change these settings as well, great. I feel like I'm getting somewhere gradually, been spinning my wheels for a week on this.
I can't 'thank' you for some reason, but my buddy should have just done it, which is fair since I can finally pester him less about my battery problems and pester other XDA members instead!

No problem buddy glad I could give you some help. Let me know what you discover from all that. Another tip I could give is maybe test out a bricked kernel 1.4rs or 0.91 seem to be working best with sense 3.0 from what I've read

[Q] High battery drain (50-100 mA in current widget in sleep)

I have an unlocked T-Mobile Sensation 4G and I've tried a lot of different rom (with Sense and AOSP, GB and ICS).
I had made battery calibration every rom change (Full charge -> wipe battery stats -> do some full discharge/charge circles in normal use).
Every time I have 50-100 mA battery drain in "sleep" according to Current Widget and another battery widget (tried another to commit that Current Widget tells truth).
The phone settings are maximum power-saving:
Fixed small brightness
2g only
Data and auto-sync are turned off
Wifi only if needed
CPU is downclocked to 1.2 gHz
Battery is stock. Phone is two months old.
In my regular usage (1 hours of calls, 10 min wifi) phone dies in 12 hours after full charge.
It is not my first android and I'm not a total noob. My Desire HD with one year old battery live 2 days with my usage.
Also I notice, that sometimes battery left is not accurate and changed after reboot to a bigger value. For example, 80% left -> reboot -> 82% left.
Any suggestion?
Thanks in advance!
Sorry for my poor English...

My suggestions:
1. Use system tuner or a similar app to check up on which apps are draining the most power (keeping the CPU on, etc).
2. If no culprit can be found, full wipe and reflash your ROM, and refrain from downloading any apps, see if that improves battery drain. If it does, slowly install more apps until the battery drain goes up again, and you'll know whats causing it.
3. If reflashing does not help batter life, you might want to try another ROM or kernel.
4. If none of those help, or even if they do, I highly recommend an ANKER battery, it'll at the very least boost your battery life a few more hours.
5. If the battery life still sucks, then it might be a hardware issue and you might want to get it exchanged or whatnot.
I used to have the same high battery drain problem, but after flashing new ROMS/Kernels and switching to an ANKER Battery, I now get 2 days of light/medium use out of my Sensation.
Currently using Insert Coin 4.5.0 with 1.5GHz overclock+undervolt if you're interested in trying.

MoodyTunic said:
My suggestions:
1. Use system tuner or a similar app to check up on which apps are draining the most power (keeping the CPU on, etc).
2. If no culprit can be found, full wipe and reflash your ROM, and refrain from downloading any apps, see if that improves battery drain. If it does, slowly install more apps until the battery drain goes up again, and you'll know whats causing it.
3. If reflashing does not help batter life, you might want to try another ROM or kernel.
4. If none of those help, or even if they do, I highly recommend an ANKER battery, it'll at the very least boost your battery life a few more hours.
5. If the battery life still sucks, then it might be a hardware issue and you might want to get it exchanged or whatnot.
I used to have the same high battery drain problem, but after flashing new ROMS/Kernels and switching to an ANKER Battery, I now get 2 days of light/medium use out of my Sensation.
Currently using Insert Coin 4.5.0 with 1.5GHz overclock+undervolt if you're interested in trying.
Click to expand...
Click to collapse
Thank you, I will try.

How much does your battery actually drain overnight? Should be around 1% per hour or less if all is well. Disregard currentwidget in deep sleep mode as the Sensation has a very broken meter.
Sent from my HTC Sensation Z710e using XDA App

Kameeeleon said:
How much does your battery actually drain overnight? Should be around 1% per hour or less if all is well. Disregard currentwidget in deep sleep mode as the Sensation has a very broken meter.
Sent from my HTC Sensation Z710e using XDA App
Click to expand...
Click to collapse
I'll check it this night.
With jumping battery meter I don't know if these values will be correct. But when the battery value reaches 0% the phone shuts down immediately and don't turn on. So 0% it counts well.

i think im also having the same issue . i checked current usage when in sleep mode.its between 50-80
Sent from my HTC Sensation XE with Beats Audio using XDA App

12hrs with the standard battery is actually very good for a sense build, without sense it should go around 15 - if the battery is in good condition. The battery driver for the sensation is very buggy and you won't get accurate results with any measurement app. Don't worry about the standby or inuse readings as they will both be wrong.
If you're battery drains faster than 1% per hour in standby, assuming you are in a good signal area, then use a system info app to see which program isn't sleeping, then uninstall that program.
But it doesn't sound to me like you have a problem.

According to the log file it drains 1-2% in hour (now I'm using aosp build, MIUI). I think, new Anker battery is the only way. Thanks to all!
Maybe in the future we'll get a more accurate battery driver...

Whats your Normal battery Drain in ICS ROM?

During sleep mode or the screen off I have a 54mA drain this is too far from my Android ROM HD2 it only has 3-6mA drain. I have the latest firmware 3.32, AOSP nonsense. I worried this drain to much even with cpu underclocked to 916Mhz, Minimal Rom.
I used Battery Monitor with graphical history.

Just my own experience, but I haven't really heard of a sensation owner getting 3-5 mA battery drain. The lowest mine generally gets is in the 40s and 50s. I'm more than willing to be corrected on this however, if other sensation owners are getting significantly lower battery drain then I am definitely interested to hear about it
When my sensation was still stock it wouldn't even get below triple figures and the battery life was woeful. Since rooting and so forth I'm seeing the 40-50 mA I mentioned before. With moderate use I'd get about 36 hrs out of a charge.
Maybe have a read of this if you want to look into it? It is a Desire thread, but that makes no difference to the process being used.

Ignore the reported mA values, the battery driver doesn't report them so your widget/app has to interpret what it can best guess. Even the percentage remaining is only an approximate value. Standby times will vary depending on how much time the phone is awake but after going from 100% to 10% you should get around 5hrs 'screen time on' with a senseless ROM and stock battery - 3 or 4hrs with a sense ROM. If you are getting less than this you may have a signal issue or a rogue app, otherwise don't worry about the mA values.
I came from the HD2 also, I spent a while trying to replicate it's standby consumptions on the sensation - I've now uninstalled all the battery monitors as they were useless on this phone.

I am using CurrentWidget and i get drain like 10 mA in sleep.
Also mine active use time of Sensation XE (stock accu) with insert coin 5.1.4 rom is more then 24 hours right now (after removing all unused by me services, and performing battery calibration + 8+1+1 charge cycle) + I always charge it for hour or two after it is showing 100%. So basically i unplug it @ morning ~ 6 AM, listen music for hour +, then all the day wifi + twitter + facebook + icq are active + some phonetalks, may be some photo\vid recording, reading e-mails and etc + hour of music on way back home, and after all that when i come home @ evening I usually have 60 - 50% left. No games are played, they are the only thing that can drain fast.
All i did - spent few days reading forums and internets about battery use, then selected all that made common sense and did it. Now I am very happy with mine phone performance. (also quattro gives mine device ~2800 score in benchmark). And active use time feels for me like 3x or even 4x of what I experienced on a stock system when I bought phone.

goatee84 said:
Just my own experience, but I haven't really heard of a sensation owner getting 3-5 mA battery drain. The lowest mine generally gets is in the 40s and 50s. I'm more than willing to be corrected on this however, if other sensation owners are getting significantly lower battery drain then I am definitely interested to hear about it
When my sensation was still stock it wouldn't even get below triple figures and the battery life was woeful. Since rooting and so forth I'm seeing the 40-50 mA I mentioned before. With moderate use I'd get about 36 hrs out of a charge.
Maybe have a read of this if you want to look into it? It is a Desire thread, but that makes no difference to the process being used.
Click to expand...
Click to collapse
No the 3-6ma is from HD2 device,
WOW 36hrs thats too good what ROM version you are using Mine with Virtous no sense last only 16-20 hrs with 2-3hrs wifi, 3.5 hrs screen on time with lowest brightness.. I also maximize the cpu for battery eg. lower down the frequency to 800-1000, samplling rate, treshold etc,,,

cozmer said:
I am using CurrentWidget and i get drain like 10 mA in sleep.
Also mine active use time of Sensation XE (stock accu) with insert coin 5.1.4 rom is more then 24 hours right now (after removing all unused by me services, and performing battery calibration + 8+1+1 charge cycle) + I always charge it for hour or t.
Click to expand...
Click to collapse
and performing battery calibration + 8+1+1 charge cycle.
What does dis mean? can you direct me to link to this.
I'm impress with your battery performance! - stock accu u mean kernel?

euclanville said:
No the 3-6ma is from HD2 device,
WOW 36hrs thats too good what ROM version you are using Mine with Virtous no sense last only 16-20 hrs with 2-3hrs wifi, 3.5 hrs screen on time with lowest brightness.. I also maximize the cpu for battery eg. lower down the frequency to 800-1000, samplling rate, treshold etc,,,
Click to expand...
Click to collapse
Check my sig, I'm using Darkforest 6.1.0. OC'd to 1.5 GHz on-demand, powersave on screen off. Auto-brightness. Right now I have 52% battery left after 17hrs moderate use today. Goes alright
Sent from my HTC Sensation Z710 using XDA

Please read and help me :(

Hello, XDA-Community.
I bought my HTC Sensation XE 3 month ago.
First i must say, the Beats-headset has a very good sound, but it's bad quality.
2 weeks ago, the right headphone stopped working. I gave it back to Media Markt and they sent it back to HTC, i must wait for it-.-
but now the real problem:
i always have got a bad battery life! (lock at the attetchments)
i tried nearly all roms(really a lot), all kernels, i tried to underclock or undervolt an different govenors. i even bought an anker extended battery but it all didnt't changed anything.
after that, i tried to downgrade form fw 3.33 to 3.32 and to downgrade the hboot, but nothing.
does anyone of you have this problem too or can anybody help me?!
its so bad, i even cant get 10 hours with it..
2h and 33 min screen on time an still 9 percent of battery.

Based on your screen on time, that battery life isn't insanely bad. It's not good, but it's not utterly terrible.
Have you tried the simple stuff like lower brightness? Turning BT and GPS off when not in use? Keeping Mobile data turned off? Lower the screen time out to 15 or 30 seconds?
Those things will do wonders for battery life.
Also make sure you're not overclocking with a performance governor on your kernel. That'll burn battery like crazy. Use a more battery friendly governor with your kernels like Badass or even Conservative. And don't clock it up to 1.7 or anything nutty.

Skipjacks said:
Based on your screen on time, that battery life isn't insanely bad. It's not good, but it's not utterly terrible.
Have you tried the simple stuff like lower brightness? Turning BT and GPS off when not in use? Keeping Mobile data turned off? Lower the screen time out to 15 or 30 seconds?
Those things will do wonders for battery life.
Also make sure you're not overclocking with a performance governor on your kernel. That'll burn battery like crazy. Use a more battery friendly governor with your kernels like Badass or even Conservative. And don't clock it up to 1.7 or anything nutty.
Click to expand...
Click to collapse
i never use bt or gps. only thing is mobile data.
screen is nearly always on lowest and if not, its auto.
time out is at 45 sec.
if i use bricked kernel, my battery life is better, but every hour my phone reboots less one time.
now i am on faux kernel, underclocked to 1.1 ghz and undervolted to -75. the govenor is intellidemand.

You could try to use a non-sense-based rom like cyanogenmod, for me there was a huge improvement.
Regarding your Problems with random reboots on bricked kernel, just set the minfreq to 384Mhz and it should be alright

Mr.Heinzelman said:
You could try to use a non-sense-based rom like cyanogenmod, for me there was a huge improvement.
Regarding your Problems with random reboots on bricked kernel, just set the minfreq to 384Mhz and it should be alright
Click to expand...
Click to collapse
both problems(battery and reboot) are still there after trying this...

How much gaming are you doing? Regardless of how much screen on time you have, games can drain the battery like crazy. What's your usage pattern like? Lots of web surfing over mobile internet? Watch a lot of movies? Games? 2.5 hours of screen on time isn't too bad, but it's not great either.
If all else fails, wipe all except SD card, install ROM, restore apps without data unless that data is extremely important to you. Also make sure your radio and RIL match with something like GetRIL. Match your firmware to your ROM base too (ie. 3.33 firmware for 3.33.xxx.xxx ROM).

Have you tried to put the phone in airplane mode during the night time. Or reset your battery stats?

2.5 hrs of screen on time isn't bad when you also had an additional 6.5 hrs of standby. But the biggest thing you can change to save battery is background data and auto sync. Turn those off and expect big difference. Also don't use auto brightness unless you have to. If your inside then turn it all the way down .
Sent from my Sensation 4G Bruces CMX jellybean ROM using XDA Premium
REMEMBER TO HIT THANKS IF I HELPED YOU IN ANY WAY, IT'S POLITE AND APPRECIATED.

Hi there, I had absolutely awful battery life on my stock battery! I understand completely what your going through. I did however find a solution . First let me say I've tried just about everything, turning down brightness , turning off sync, switching kernels, turning off gmail, yet still the battery life was awful! So finally I purchased a extended life battery, I choose Anker because the price was low. It did help but I still was not where I wanted to be. Then I decided to purchase a mugen 3500mah battery. It's expensive but worth every penny! Now with heavy use I'm on 100% for two hours. I can use my device heavily for 19, hours and still have 42% battery left ! It's amazing! I wish I got it sooner! It does come with a replacement back cover to fit the battery but my 4g signal is still strong, WiFi works perfectly , navigation works perfectly so no worries about the case interfering with signals. It does make the phone thicker but it still fits in pocket, and feels good in your hand . It does look thicker but who cares with this kind of battery life! Finally I don't have to worry about my battery! If your tired of worrying about battery life then get the mugen 3500mah battery. Buy it directly from mugen because there are too many counterfeit batteries going around on other sites. The downside is it costs 100 dollars but honestly its worth every penny. If your serious about getting a great battery then this is the one. I don't regret getting mine for a second! It makes all the difference in the world! I had to save up to get it but it was worth it. This battery will solve your issues! It solved mine ! Best wishes and hope this helps you.
sent from HTC sensation, soff, 3.33 firmware, viper Rom, sense 4.1, mugen battery. please press thanks if I helped in anyway.

I load my device every Night.
I Often wiped my battery stats, but now change...
Tomorrow i will try to einsalbe Auto Sync.

Passi1909 said:
I load my device every Night.
I Often wiped my battery stats, but now change...
Tomorrow i will try to einsalbe Auto Sync.
Click to expand...
Click to collapse
I'd recommend that you don't delete the battery stats. The phone should learn over time and every time you delete them it has to start from scratch again.

but how to calibrate the new battery?
still having so bad battery life, after disabling auto-sync.

You calibrate battery by draining almost down to about 10% then recharge to 100% repeat this process about 4 times and battery will be calibrated. I read your not supposed to drain to zero although some people do during calibration. That's up to you. I read draining to zero can sometimes put the battery into a deep sleep and its very difficult when that happens to get it awake again. So I only go down to 10%. Hope this helps and answers your question.
sent from HTC sensation, soff, 3.33 firmware, viper Rom, sense 4.1, mugen battery. please press thanks if I helped in anyway.

As I understand it the phone/ROM won't allow the battery to be discharged fully to the state that it'd cause a total battery failure. Get CurrentWidget from the Play Store.
I can't remember the Full/Discharge voltages (~4.2V to ~3.5V) but not certain.
Just let the phone charge fully and discharge normally (let it get to a total turn off) a few times and you'll be fine. Please stop wiping the battery stats it just confuses things.