Develop Bugs

thoughts on evo battery life?

okay i have alot of thoughts and questions on the htc evo battery life. first off i think the devs have done a great job with improving it but in reality we aren't there yet IMO. i mean coming from the hero after calibration and a 1750mAh battery i had what id call good battery life, even without the use of custom kernels or setcpu. even with calibration on the evo, the bottom line is the battery life sucks ass. i cannot even believe htc released a phone with such ****ty battery issues. ive even seen posts on here from people with extended batteries with crap battery life as well.
number 1 they should of shipped it with a higher capacity slimline battery. if it weren't for the devs here the phone would be unusable as i can remember the first time i bought the evo in july i had it for a week and got rid of it the battery was soo bad.
then we have battery mod scripts like calkins & the colin tweak that honestly never did much for my phone. then of course the much debated sbc mod that alot of people says created issues. my own take on it is it seems more of a visual effect or placebo than anything. yes it seems to hold a charge a bit longer but only when the phone is not in use. whats the sense of owning a phone such as great as the evo but be afraid to use it at all?
the reason i do not use sbc is because something to me doesn't seem right about the way it charges the battery. for example: my phone had 88% battery left before i flashed the sbc mod, then after reboot it was back to fully charged? how the hell can that be possible?
so im sorry for venting but sometimes i think i may look into a smaller android phone such as the optimus s or another hero. does the evo shift have these issues as well?
so now i ask for advice from the users that "claim" to get well over 24hrs battery life on stock batteries. im running myn's rls4 rom with the netarchy 4.2.2 /less havs/ no sbc kernel. if i choose to use setcpu and do not want to overclock what settings should work best? or did i hear that havs & setcpu do not play well together?
thanks for listening!

My biggest issue is that it's very inconsistent. I'm on MikFroyo 4.3. When I flashed this ROM I upgraded to all the newest radio, PRL, PRI, etc. It used the stock HTC #15 kernel and I was getting OUTSTANDING battery for the first 5-7 days. Then, literally overnight, my phone started losing 10% of its battery per hour while NOT IN USE. And, no, it wasn't the Up vs. Awake issue, I hadn't installed any new apps, none of that. So I "downgraded" PRI to 1.77 and STILL, absolutely horrible battery life. I've tried different kernels but nothing works. I can take my phone off the charger at 5am and be down to 15% battery by noon with LIGHT use. Signal strength isn't an issue either. It's just frustrating. I understand that these phones have large displays and constantly multi-task but you would think HTC would realize that these phones are going to be used by "power users" and plan ahead for it. But I suppose if our battery wasn't an issue we would just find something else to ***** about all day, lol.

Try miui, that rom gives me the best battery life I have ever seen.

Buff McBigstuff said:
Try miui, that rom gives me the best battery life I have ever seen.
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+1. I get better battery life with my EVO running MIUI than I did on my Motorola Renegade clamshell phone, and probably twice the life I got with my Hero. I replace my battery with a charged one every morning and I generally still have 50-60% life left when I do that. I have gone 2 full days on a charge. I did not get this kind of battery life out of any sense ROM I have tried.

You say, MIUI, I say CM6 or 7. All depends on what you like, really in regards to ROM.
I can say that I do get better battery life on CM vs something like Myn's. My phone does stay on for more than 24hrs with somewhat light usage. That means the display is on for about 2-2:30hrs in that time while I browse the web or look at videos, but the rest of that time, it has all of its radios on and is constantly pulling down updates for Twitter, FB, NYT, and Yahoo Mail.
I haven't had any sudden drops in battery life, but if I did, I'd probably buy a new OEM or near-OEM quality battery to replace it.
My BB Tour used to do far less and yes, it lasted longer, like days without a charge, but it didn't have all this stuff going on. So yeah, comparing this large bar phone with its huge display, on-going processes is sorta unfair.
That said, I do wish it lasted 2 or 3 days with light usage.

garekinokami said:
You say, MIUI, I say CM6 or 7. All depends on what you like, really in regards to ROM.
I can say that I do get better battery life on CM vs something like Myn's. My phone does stay on for more than 24hrs with somewhat light usage.
That said, I do wish it lasted 2 or 3 days with light usage.
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Coming from Myns rls 5 to cm7 both with stock kernels I could honestly say I see better battery life wit no OC on the CM7 rom. From my experience using warm 2.2 roms, I could get nearly 40 hours on the phone but in order for that to happen I have to barely use it. Which basically means its pointless. I mean if that's the case I might as well leave the phone turned off. Not to mention how much of your time that gets consumed searching for the perfect kernel to fit to your liking and phone.
I really do think the battery sucks on the evo but there are ways and roms to make it manageable. Sooner or later the new duel core & Tegra processors will be here soon, so bad battery life should be a thing of the past. Only because the CPU wont work so hard while sharing the strain we put on are phones. Lets just all sit tight and let technology take its coarse.
r0cky.Da.3v0.SU.-

+1 for MIUI. This is the best battery life I've ever seen. To the point where I stopped carrying my charger around. I still keep and extra battery just in case but I haven't had to use it in weeks. I get through the day easily on a full charge and I have no problem charging mine at night...I've been doing that since back in the day with flip phones. I thought everyone charged overnight while sleeping or is that not the norm?

Its also a norm for me if it needed it. Another reason I think MIUI and CM Roms are good on battery life is because ultimately they don't have 4g. I've been on the same charge all day and I still got some juice left to flash the new nightly for cm7. U gotta love it.
r0cky.Da.3v0.SU.-

Doesn't CM have 4G now? Even when I was on Sense roms I rarely ever used the 4G though. Same here though, I took my phone off the charger around 3pm, got home from work around 4am and still had plenty of juice left to back up, flash the new MIUI rom, and set it up. Seems like battery is getting better with every new release. No complaints here.

I don't get 24 hours battery, but I don't lose any battery while idle on a sense rom either. I'm on mikfroyo, with net's 4.3.1 cfs havs nosbc kernel. I'm using setcpu, and my screen off profile is 245 min and max smartass. With the screen off I barely lose any battery at all. I charge my phone periodically throughout the day, but I've gone 10+ hours off charger (with moderate usage, but no gaming or anything like that) and still had a good 40% battery left.
Sent from my blah blah blah blah

Keep in mind these phones have 8mp cameras, 1ghz processor and tons of extra memory. Basically the equivalent of the lap top computers of 2 years ago.
Sent from my DROIDX using XDA App

fachadick said:
I don't get 24 hours battery, but I don't lose any battery while idle on a sense rom either. I'm on mikfroyo, with net's 4.3.1 cfs havs nosbc kernel. I'm using setcpu, and my screen off profile is 245 min and max smartass. With the screen off I barely lose any battery at all. I charge my phone periodically throughout the day, but I've gone 10+ hours off charger (with moderate usage, but no gaming or anything like that) and still had a good 40% battery left.
Sent from my blah blah blah blah
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Honestly anything over eight hours is descent especially if u still have juice left over. Even with that said and speaking for all the cm users, I can honestly say that netarchy kernels are definitely not needed using this rom. Even though its a great kernel, That would be kinda suicidal towards my battery life.
"Sent to you from a Gingerly Gingerbreaded Evo rockin' CM7 flashing Nightly."
-r0cky.Da.3v0.SU.-

ajones7279 said:
Doesn't CM have 4G now? Even when I was on Sense roms I rarely ever used the 4G though. Same here though, I took my phone off the charger around 3pm, got home from work around 4am and still had plenty of juice left to back up, flash the new MIUI rom, and set it up. Seems like battery is getting better with every new release. No complaints here.
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Yeah, CM6 has wimax but CM7 doesn't. On the account of the Rom isn't stable yet.
"Sent to you from a Gingerly Gingerbreaded Evo rockin' CM7 flashing Nightly."
-r0cky.Da.3v0.SU.-

Terrible battery life

So I've come to accept that the Incredibles battery life is terrible. But after rooting and flashing new ROMs, how come my battery life is even MORE terrible?? Is it because I've downloaded too many apps? My phone was just charged to full and as I post this it already dropped 10%. I can't get my battery life past 6hours of moderate use ie texting and occasional browsing. This can't be normal, or is it??
Sent from my ADR6300 using XDA App

Maybe try CM?
Have you considered flashing CM? I get really good battery life on CM and I am running build 17 right now.

When I flashed cm I got stuck in boot loops so I didn't really want to try it again haha
Sent from my ADR6300 using XDA App

mkhang said:
When I flashed cm I got stuck in boot loops so I didn't really want to try it again haha
Sent from my ADR6300 using XDA App
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Did u wipe data/cache and Dalvik cache? It's a must since CM7 is an AOSP rom. Just sayin'.

mkhang said:
My phone was just charged to full and as I post this it already dropped 10%.
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As far as this issue, please see: http://forum.xda-developers.com/showthread.php?t=871051
Good explanation on what happens to your battery when you think it's being fully charged.
Concerning ROMs that boost battery life, have you looked into those that are basically just tweaked, scaled-down versions of stock ROMs? I'm running Magnolia 1.3.1 and getting more than a day of use with a good amount of texting, calling, browsing, apps, etc.
And this is on the stock kernel! My Dinc is running so well I don't want to screw anything up by flashing a different one haha

Another suggestion would be to use setcpu or similar app to underclock slightly at all times, and drastically on screen off...these processors are plenty fast, and you may not even notice 100-300 hertz less through the day.
HTCInc-redibly re-ENGINEERED

[email protected] said:
Have you considered flashing CM? I get really good battery life on CM and I am running build 17 right now.
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I got the worst battery life ever out if the cm's, can't go a full day on single charge!
Dinc running Magnolia 1.3/incedikernel/and BnB theme!

My battery came as a lemon, so I got a new one under warranty and battery life quadrupled. My battery life was insanely bad (like 3 or 4 hours light/medium use) so if yours is that bad your battery might be bad too.

mkhang said:
So I've come to accept that the Incredibles battery life is terrible. But after rooting and flashing new ROMs, how come my battery life is even MORE terrible?? Is it because I've downloaded too many apps? My phone was just charged to full and as I post this it already dropped 10%. I can't get my battery life past 6hours of moderate use ie texting and occasional browsing. This can't be normal, or is it??
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
My battery life was much worse with the stock ROM.
I am using the CM7 nightly, my battery life is much better using this rom opposed to the stock.
One thing I had to do was to turn off auto brightness and manually set the brightness. I usually set it to about 1/4 or 1/3 of the way up as the screen is bright enough for indoor use.
I watch a lot of videos and this comsumes battery, but with the brightness manually adjusted it was much better. ex if a normal video used 20% of the battery for a 22 minute show, it now uses about 10 to 13%.
Also I noticed that when I am at 100% charge, it drops to 93% in about 10-20 minutes. After that it stablizes and appears to give a more accurate reading.
those are my suggestions. I have had the same results with all the CM roms.

Latest CM7 nightly gave my wife's phone 1 day 11 hours to get down to 20% charge, with typical (for her) usage. Meaning a lot of touchdown email checking/facebook stuff, not a lot of talking.

Root/rom/battery question

Droid incredible. Rooted, virtually every rom through rom manager causes my phone to battery to drain very fast.
After a charge itll drop to 90% in about twenty minutes. Iv heard thats a droid thing.
From that point, it steadies but still is losing juice FAST. Phone has been awake for 8hrs today with light usage and is currently at 70%. Gps off, wifi off, etc. No vibrating feedback, auto brightness.....all settings geared for battery conservation.
Im using Incrom 1.6 with a stock kernal. Any ideas or thoughts are appreciated as i dont stop hearing that everyone in the world is rooted and enjoying their batterys new ability. Ohhh, btw extended battery, red htc one in case that matters.

mikeurce said:
Droid incredible. Rooted, virtually every rom through rom manager causes my phone to battery to drain very fast.
After a charge itll drop to 90% in about twenty minutes. Iv heard thats a droid thing.
From that point, it steadies but still is losing juice FAST. Phone has been awake for 8hrs today with light usage and is currently at 70%. Gps off, wifi off, etc. No vibrating feedback, auto brightness.....all settings geared for battery conservation.
Im using Incrom 1.6 with a stock kernal. Any ideas or thoughts are appreciated as i dont stop hearing that everyone in the world is rooted and enjoying their batterys new ability. Ohhh, btw extended battery, red htc one in case that matters.
Click to expand...
Click to collapse
Try flashing some new kernels..try a couple out. If that doesn't work did you over charge your phone? Or use a car charger?
sent from my Dinc

Its not the battery cause when i revert to stock the battery is normal for what im used to. The change is noticable wen i use any of the custom roms.
Right now wrkng on flash radio, hit a bump waiting for email back.
Ne other suggestions from u or nebody wud be apreciatd

I use the app batterycalibration after flashing new roms it works well for me
Sent from my ADR6300 using XDA Premium App

Everybody's definition of "light usage" is different. Losing 20% in 8 hours doesn't seem that bad to me unless you litterally never turned your screen on. That said, here are some things you can try:
1. I've found that the auto brightness sucks and I'm better off just manually setting it to 25% or so. That's fine for indoor use and you can't see the screen in bright sunlight anyway regardless of the setting so why bother burning battery trying?
2. Try flashing a kernel that allows you to underclock and undervolt. Perhaps one of Ziggy's nonHAVs kernels (I have found that HAVS kernels to be unstable, but YMMV). Either use the smartass governor or setCPU to cap screen off at 384 MHz.
3. Carry a charger with you

I'd see what is using your battery in settings.
Also, you could try chad's sense (12/28 I think) incredikernel, which sets the max clock speed really low when the screen's off (defaults to smartass governer).
If you wanted to try CM7, gingerbread has a much better battery usage UI that'll give you a nice graph of battery usage vs. time for phone awake time, signal strength, wifi and some other stats.

[Q] Maximize Battery Life

Hey there,
I want to know what is the BEST setup to maximize battery life. What ROM? What Kernel? What UnderVolt ( if any )? What Radio?
My room mate has an iPhone that he modded and it now lasts two days without being charged and that's with moderate usage. I'd like to out do him with my Android. Any help?
-Reiz

So far personally I've had the best experience with the following :
ROM : CM7 ( 7.0.0 )
Kernel : Tiamat 2.6.32.27
Radio : 11.19
I can't seem to get undervolting to work since I don't have the folder that Viper describes even though I am using an AOSP rom ( as far as I know ) . o.o It's odd really... Anyways, that usually gets me about 20 hours of usage or so .

Twenty hours isn't bad, as the Incredible isn't known for it's battery life. You won't get what your roommate's getting with his phone, maybe get a bigger battery...? I don't think you're going to really out do yourself with the experience you've posted, I'd be happy with that.
I am running SkyRaider 4.0, Chad's 12232010 kernel, OC'd to 1.0368 (small OC, I know) with the leaked 04.08 radio, and I can get about 20 - 24 hours before charging, low to moderate usage (no games, emails for work/personal, maybe 1 call of 5 minutes, lots of web browsing).

Cm7 stock kernal. On metro pcs with a seidio 3500 mah extended battery. Unplug at 7am 12 hours later only sitting on 74% lmao. And in that time bout 100 text. And 200 work emails.. and 30 mins of surfing on lunch. This setup has been the best for me on bat life.. used to run sense and my bat life would just suck..
Sent from my ADR6300 using XDA Premium App

your screen is sucking your battery down
Reizvoller said:
Hey there,
I want to know what is the BEST setup to maximize battery life. What ROM? What Kernel? What UnderVolt ( if any )? What Radio?
My room mate has an iPhone that he modded and it now lasts two days without being charged and that's with moderate usage. I'd like to out do him with my Android. Any help?
-Reiz
Click to expand...
Click to collapse
Two things that will kill your battery faster than anything:
-Anything that syncs
-your screen
So, turn your brightness and screen timeout down and turn off anything you don't need syncing all the time, or at least turn the sync frequency down.
Also, keep your wifi, vibration, tactile feedback, and gps off unless you really need it.
Kernels, roms, undervolting...no where near as effective.
Think about your phone as a smaller version of a laptop (which it pretty much is), what's going to save you the most energy: throttling your cpu speed, or turning the screen brightness down?
Much love brother

Battery nosedive upon wake? CM7 SZen kernel.

Hi, I was wondering if it's typical for the Evo's battery to take a rather large dip upon unlocking it after not using it for awhile but keeping it on. Around 15% under within the few minutes that I used it after waking it up from maybe about 4 hours or so of not using it and just keeping it locked without any phone calls or other disruptions.
Why does it seem to want to ramp up something like crazy when turning the phone on after not using it for awhile? Or does it actually need to do that to function? Thinking about trying out the conservative governor and jacking up the minimum MHz so the performance isn't horrid.
Using CM7.0.3.1 with SZen, have tried the SZ, smartass, and InteractiveX (current) governors.
Radios and what not are all up to date.

Trying other governors doesn't seem to help this issue at all (if it is an issue).

tried a reflash? I think i had some battery issues the first time i installed CM7. I currently use SZ 2.1 i think with SBC and BFS. My governer profile is set on savagezen and I get pretty good battery life. My phone never has huge battery drops unless I'm using the ever living crap out of it.

Nah, I had a 100% clean flash two times over, I reflashed last time for a different problem which was fixed because i was messing around with settings, not from the system/kernel. I mean I could reflash it again but I've had tons of clean flashes and always have noticed the issue, now that mostly everything else is fixed for me I'm getting around to this issue to see if it even is one.

Same problem drops 5% with in 2 minutes, I've calibrated tried cm7, miui, and stock they all do it...even bought a new battery...
Sent from my PC36100 using Tapatalk

Mine doesn't necessarily drop a certain % in a certain way/timeframe, just a large dip after not using it for awhile. As if it's taking an enormous amount of resources to try and wake itself back up and stay awake after being asleep for so long.

larry2513 said:
Same problem drops 5% with in 2 minutes, I've calibrated tried cm7, miui, and stock they all do it...even bought a new battery...
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I switched to a SBC kernel and fixed this issue. used to drop from 100 to roughly 85 % in as little as 10 min off the charger

did you re-calibrate you battery stats???

This is w an extended battery and an amount of usage today...its all about finding the right combo.

I reset battery stats every new kernel/ROM I change. Is it useful for any reason to reset after switching governors? I'm going to try Tiamat next probably.

BigRed Productions said:
I switched to a SBC kernel and fixed this issue. used to drop from 100 to roughly 85 % in as little as 10 min off the charger
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I use SZ as well, doesn't help it.
Or rather, there's no immediate drop like i said for me. Just quickly depletes after a long wait.

stkiswr said:
This is w an extended battery and an amount of usage today...its all about finding the right combo.
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Click to collapse
What do you use out of curiosity? I'd love for mine to have a steady drop like that instead of a massive dip, 8hrs on a very decent amount of use too. Even with the extended battery that seems like so much. Unless the extended is literally double the life?