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Best battery life ROM for Galaxy S2 (I9100) ?

Currently using Resurrection Remix ROM (KitKat 4.4.2) 201401016 # Basic, the older version released in January 2014, but the most nice and fast for me after testing more then 30 ROMs. Everything is fine, at least almost, the only problem which I want to deal with, is a battery life. Got anyone some recommendation for good ROM with nice battery life ? Spending 2% of battery just for booting it up is too much even for me with 3 batteries.
So, I open a poll with some common roms, feel free to submit other ones if they aren't in a poll options.
Thanks

NeatRom it is!

Am on carbon ROM but battery life ain't tht good, but customization is just wonderful
Sent from my GT-I9100 using XDA Premium 4 mobile app

I believe that best ROM threads are not allowed here...

Only stock will give you best battery life. And i recommend NeatRom. Of course it depends on your needs, but you can try any other ROMs based on stock.
Wysłane z mojego LG-D802 przy użyciu Tapatalka

Neatrom v6 kitkat ,Dorimanx kernel. Few weeks old battery 5 Hours screen on time! You can't pull beyond 5 hours on kitkat with 1650mah battery.
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Also had a irc client and browser running which it does not show. Torrent client was also running all the time in the background downloading some retro movies. I was also watching documentries off Youtube for 3 hours straight!
IMHO, Gingerbread has best battery amd smoothness among all! I used to get 7 hours screen time on Gingerbread, Sweet!

ASPIRINEMAGA said:
Currently using Resurrection Remix ROM (KitKat 4.4.2) 201401016 # Basic, the older version released in January 2014, but the most nice and fast for me after testing more then 30 ROMs. Everything is fine, at least almost, the only problem which I want to deal with, is a battery life. Got anyone some recommendation for good ROM with nice battery life ? Spending 2% of battery just for booting it up is too much even for me with 3 batteries.
So, I open a poll with some common roms, feel free to submit other ones if they aren't in a poll options.
Thanks
Click to expand...
Click to collapse
Regardless of rom, if you are rooted, grab a firewall like AFWall+ and whitelist only those apps you really, really need accessing the internet.
That wins half the battery life battle. For extra life, freeze or uninstall bloatware (particularly those that runs all the time sucking your battery dry).

At the moment, after having installed NeatRom 8th version Kitkat, Some MEDIA task is draining my battery for 58%... WTF. +gallery randomly shows 3-4 folders of 30... By the way thanks for your suggestion, I will try that

ASPIRINEMAGA said:
At the moment, after having installed NeatRom 8th version Kitkat, Some MEDIA task is draining my battery for 58%... WTF. +gallery randomly shows 3-4 folders of 30... By the way thanks for your suggestion, I will try that
Click to expand...
Click to collapse
You can try an app like BetterBatteryStats to help you analyze and target the root cause(s) of your battery drain.
NOTE: I assume that you are turning off the major battery killers unless you are actively using them. By this I mean the screen, GPS, bluetooth, Wifi, 3G (switch to 2G-only mode), background sync etc.

To get the best battery life on s2 : dorimanx kernel is the best..u are able to reduce voltage/ reduce The clock speed . And still fast . Many more tweaks using stweaks to get the best overall battery/performance . The more battery tweaks or profiles the less performance . Always find whats best for you :highfive:
Rom: Any
Kernel: dorimanx which matches the android version
Phone: galaxy s2

Wow Amazing I can’t believe
My beat bettery time was 4hous
Sent from my GT-I9100 using XDA Free mobile app

Will dorimanx kernel work with pacman ROM 4.4.4?
Sent from my GT-I9100 using XDA Premium 4 mobile app

Battery Life on SlimKat
On SlimKat battery enough for one day with normal use.

[COMPARISON] Post your battery life + SOT of your current ROM

Hi, I've created this thread to compare battery life between different ROMS
Post your current ROM, and your battery life ( with screen if you want )
Don't forget the poll !

S4 is a great phone but battery wise it's completely ****ty. The maximum SoT I can get is on stock TouchWiz based ROMs and that's only 3 hours.

ThaRealSaad said:
S4 is a great phone but battery wise it's completely ****ty. The maximum SoT I can get is on stock TouchWiz based ROMs and that's only 3 hours.
Click to expand...
Click to collapse
I've seen many people with +5h SOT, maybe some useful kernel tweaks, but even with custom kernels I can't get over 2h30-3h

BrosseLi said:
I've seen many people with +5h SOT, maybe some useful kernel tweaks, but even with custom kernels I can't get over 2h30-3h
Click to expand...
Click to collapse
What? Are you sure people can get 5h+? I really doubt that man. They're probably using extended batteries or battery cases.

ThaRealSaad said:
What? Are you sure people can get 5h+? I really doubt that man. They're probably using extended batteries or battery cases.
Click to expand...
Click to collapse
Yea I don't remember where I've seen it, but they got +24h with around 7-8h of SOT without charging the phone or using battery cases
I could get 50h+ battery life with 10h SOT on my LG Spirit thanks to some tweaking of Interactive governor, so I think it's possible

For me, I got 3.5-4h SoT with my mobile data turned on, both GearCM and stock-based. I'm using a Hippo 3200 mAh battery.
5h+ SoT? Possible. Don't use any mobile data, only Wi-Fi. That's it.
Sent from my GT-I9500

Got 6h30 SOT yesterday and still 40% with Lollirom and Impermium 3.4 kernel, Yankactive kernel
I watched 2 movies, I think Wi-Fi is the major battery drainer

My i9500 battery time
Model Samsung Galaxy S4 i9500
With Stock 4.3 firmware Nonrooted
More then 1day use..Screen on time more then 6 hour
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irfanbd94 said:
Model Samsung Galaxy S4 i9500
With Stock 4.3 firmware Nonrooted
More then 1day use..Screen on time more then 6 hour
Click to expand...
Click to collapse
Wow this is excellent !
But I can't live without Lollipop and Xposed

I have a battery issue : my battery drains fast from 100% to 80-75% and then it drain normally
Do you have this problem too ?
I think I'm gonna buy a 3000mah battery

I just bought powerbank, the battery of s4 is worst ever seen. ??

We should get better battery life with 2600mah, maybe a bad battery management ?

BrosseLi said:
I have a battery issue : my battery drains fast from 100% to 80-75% and then it drain normally
Do you have this problem too ?
I think I'm gonna buy a 3000mah battery
Click to expand...
Click to collapse
My battery drain 100-90% quickly....then it is normal.Give a Try "Repair battery life" app to fix that.
I have galaxy s4 i9505,i9500 i also had nexus 5 and xperia z1 but compared to them s4 battery life is best....i have tasted all phone with different rom and with different trick.......with nexus 5 i can get maximum 5hour sot...with z1 got maximum 4-6 hour sot.But with s4 i got 6.30 hour sot and 1% standby time per 5 hour.....whre nexus 5 and xpria z had 1-2% standby drain per hour.....
Now on my i9505 i alawys got 6h-6.40h SOT even on wifi with "kushan rom 8.0" so try this rom before changing battery.

I've already tested Kushan Rom, but battery was draining fast too
Today I installed GoldenEye Rom with OC/UC Hulk Kernel, PegasusQ governor and some undervolting : SOT is just perfect and standby AWESOME !

BrosseLi said:
I have a battery issue : my battery drains fast from 100% to 80-75% and then it drain normally
Do you have this problem too ?
I think I'm gonna buy a 3000mah battery
Click to expand...
Click to collapse
run the battery down to nothing, until it turns the phone off. then boot and charge it to full without using it.
if you want to go further, when it's reached 100% turn it off and charge again until it shows 100% then reboot and do the same again but leave it for 15 minutes still charging at full.
always remove the cable when turning the phone off or on !!

3mel said:
run the battery down to nothing, until it turns the phone off. then boot and charge it to full without using it.
if you want to go further, when it's reached 100% turn it off and charge again until it shows 100% then reboot and do the same again but leave it for 15 minutes still charging at full.
always remove the cable when turning the phone off or on !!
Click to expand...
Click to collapse
Gonna test it today, thanks !

I've noticed that I lose 1% per minute when browsing or just when screen is on, very very annoying

ThaRealSaad said:
S4 is a great phone but battery wise it's completely ****ty. The maximum SoT I can get is on stock TouchWiz based ROMs and that's only 3 hours.
Click to expand...
Click to collapse
use synapse app and under clock your CPU to 1200 MHz and see the result

As I can see, no one can get a full day with Lollipop
Some KitKat users here who can last a day ?

I had it with Optimized CM 12.1

Battery life review on android 7.0 nougat - s7 edge (exynos variant)

Hi, guys. I'm creating this thread for letting you know if this battery usage from my phone seems to be an average one.
Please note that on Marshmallow i used to have only 4 hours SOT from 100% to 10%.
Actually, i dont know why there r people saying that Android Nougat has a terrible battery life. To me it seems to be perfect.
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The power management of Nougat is much better than of Marshmallow and hence the battery life is improved. While I usually got around one day (morning till night) on M I come now till next day around noon with N. For me that's the biggest improvement of Samsung's Nougat.

For my own usage, 5-6 hours SOT on Marshmallow (average)
On Nougat, I struggle to get 4.5 hours SOT

On nougat i get much better than marshmallow... i get minimum 6 hours SOT with nougat and one time i reached 8 hours SOT with 1% left
Envoyé de mon SM-G935F en utilisant Tapatalk

nougat for me and many other users including mobile site critics have worse battery then Marshmallow , even other phone's who got nougat were complaining that they have worse battery then Marshmallow like OnePlus 3T forums.
some people who experience better battery stats in nougat is because they have done a clean install of nougat update AFTER having stayed on Marshmallow for some time and the system got cluttered over time with bad apps or bugs and wake lucks that drained the system , and the clean install of nougat fixed that.

sealava said:
nougat for me and many other users including mobile site critics have worse battery then Marshmallow , even other phone's who got nougat were complaining that they have worse battery then Marshmallow like OnePlus 3T forums.
some people who experience better battery stats in nougat is because they have done a clean install of nougat update AFTER having stayed on Marshmallow for some time and the system got cluttered over time with bad apps or bugs and wake lucks that drained the system , and the clean install of nougat fixed that.
Click to expand...
Click to collapse
Indeed

sealava said:
nougat for me and many other users including mobile site critics have worse battery then Marshmallow , even other phone's who got nougat were complaining that they have worse battery then Marshmallow like OnePlus 3T forums.
some people who experience better battery stats in nougat is because they have done a clean install of nougat update AFTER having stayed on Marshmallow for some time and the system got cluttered over time with bad apps or bugs and wake lucks that drained the system , and the clean install of nougat fixed that.
Click to expand...
Click to collapse
Actually, ive got my s7 edge since february, ive been using marshmallow since ive got the phone. But last week i decided to install nougat via ota, not through odin. And i didnt wipe my phone nor do factory reset.

I have 5 to 6 hours battery time with my marshmallow.

I'm not crazy with my edge. Email eBay banking shopping that's about all and I get 5 to 6 days on marshmallow still haven't upgraded. But once I got my s3 frontier and Bluetooth on 24.7 I get 3days. So my question is if anyone has taken a hit with nougat and any s3gear. I've been hesitate on the upgrade any suggestions or experience running the 2 together will be much appreciated.
Thank you :good:

Decent considering I was hammering the battery
Sent from my SM-G935F using Tapatalk 2

bodomfan said:
Decent considering I was hammering the battery
Sent from my SM-G935F using Tapatalk 2
Click to expand...
Click to collapse
How on earth you manage to get that ?! I really struggle to get 3-4 SOT on stock nougat.

I think a black AMOLED Friendly theme dramatically improves your battery on this phone combine that with a custom ROM and battery saving tweaks you'll be able to get 6-7 easy....
Even more depending on what you do with your phone

Is this normal in GS7's battery? Share your usage!

So...
I got an unlocked Samsung S7, the Sprint variant, to use it in my country which is Mexico and I get pretty good signal, including LTE and all that. Since I got this phone (about a week ago) I haven't been getting what I think of good battery life, on a full charge disconnecting around 9 a.m. my phone dies on me at around 6 or 7 p.m. with occasional use like checking Facebook, WhatsApp, Instagram, Snapchat and a bit of YouTube, no intense gaming or heavy browsing.
At first, I thought it would be all the Sprint bloatware and the fact that it thinks it's a Sprint phone so it tries to activate every time it boots, and I didn't really had the time to root my phone to remove all that trash until yesterday. When I finished the rooting/debloating process my phone had around 60% and it lasted me from 3 p.m. to 8 p.m. only playing music and ordinary stuff.
My question is, is this kind of battery life normal? I mean, I come from an iPhone 5S (and before that I had a Galaxy S6 which is equally bad in terms of battery) and I'm pretty used to charging the phone two times a day when it's under heavy usage, but since this battery is way more big than that of the iPhone and the S6 I thought I would be getting a lot of battery life. Basically I need to charge this phone in the middle of my day so it can make it until bedtime.
And I saw a lot of YouTube reviews before getting this phone and everybody says that this battery is great (not excellent, but makes it to the end of the day) but I can't share this thought. I'm running Nougat QAA firmware, rooted and bloatware free, phone is in pretty good condition (like new, so no battery deterioration) and my usage is pretty average as I watch Netflix and YouTube on my PlayStation and usually browse the web in my laptop. I just want to know if this is normal or not, maybe I just expected too much and that makes me think that this is far worse than it actually is. I'll post a screenshot of my battery when it dies on me so you can see how this day went, and I would like to see yours too!
Cheers!

Hi, last year I bought some kind of "refurbished" 930P, unlocked of course because I'm form Uruguay and I use it here. Like you I was very disappointed about the battery life, I mean, at the first my phone died around 3hs of screentime usage. After I flashed 930U rom to solve some issues I was having with uruguayans carriers, the battery life improved a little, so now my phone dies around 3hs30m or in many cases nearly 4hs of screentime. I still waiting 7.0 Nougat for 930U to see if battery lifetime changes.
I recommend to you flash the U rom on your S7, you get free of all that bloatware and I'm sure your battery life will be better.

juampebarrios said:
Hi, last year I bought some kind of "refurbished" 930P, unlocked of course because I'm form Uruguay and I use it here. Like you I was very disappointed about the battery life, I mean, at the first my phone died around 3hs of screentime usage. After I flashed 930U rom to solve some issues I was having with uruguayans carriers, the battery life improved a little, so now my phone dies around 3hs30m or in many cases nearly 4hs of screentime. I still waiting 7.0 Nougat for 930U to see if battery lifetime changes.
I recommend to you flash the U rom on your S7, you get free of all that bloatware and I'm sure your battery life will be better.
Click to expand...
Click to collapse
Thank you for replying, I installed the latest Nougat and rooted it, then, debloated it and I got about the same screen-on time, 3 and a half hours. I would like to install the U firmware but I think there's no rooting for that (please correct me if I'm wrong) and I need root to remove ads and to change the system emojis because to me they look horrible!
Also, would you please post a screenshot of your most intense usage? Gracias!

I would say the best way to improve battery life is to install a package disabler app and manually remove bloatware. Everytime I flash between U firmware and new Sprint software one of the first things I do is disable basically any samsung thing that can be disabled, and google apps I don't use etc. Also Nougat let's you change from 1440 to 1080 and that helps a lot in terms of battery life. Try that.

swoopp said:
I would say the best way to improve battery life is to install a package disabler app and manually remove bloatware. Everytime I flash between U firmware and new Sprint software one of the first things I do is disable basically any samsung thing that can be disabled, and google apps I don't use etc. Also Nougat let's you change from 1440 to 1080 and that helps a lot in terms of battery life. Try that.
Click to expand...
Click to collapse
That's exactly what I've done in fact, I have the latest Sprint Nougat installed and I'm rooted and I uninstalled all of the Samsung and Sprint apps I don't use, my phone is rather clean actually, only a page and a half in the app drawer, still haven't had the battery I expect. I use my phone in 720p lol

Jomar Vazquez said:
Thank you for replying, I installed the latest Nougat and rooted it, then, debloated it and I got about the same screen-on time, 3 and a half hours. I would like to install the U firmware but I think there's no rooting for that (please correct me if I'm wrong) and I need root to remove ads and to change the system emojis because to me they look horrible!
Also, would you please post a screenshot of your most intense usage? Gracias!
Click to expand...
Click to collapse
Well, finally Nougat have arrived to 930U devices.
Here I share the battery life of my S7 after an intense usage with the new firmware.
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The screen resolution by default is HD (not QHD like before), and I must say both battery life and screen on-time have improved a lot (nearly 5 hours!!!) . I'm very happy with this results.

juampebarrios said:
Well, finally Nougat have arrived to 930U devices.
Here I share the battery life of my S7 after an intense usage with the new firmware.
View attachment 4144463
View attachment 4144464
The screen resolution by default is HD (not QHD like before), and I must say both battery life and screen on-time have improved a lot (nearly 5 hours!!!) . I'm very happy with this results.
Click to expand...
Click to collapse
Awesome!! Had to trade in my S7 for an Exynos model though, couldn't live with the poor battery life I had but I'm glad it is getting fixed!

Could someone solve the problem? I have the last update and the battery is drained and turned off with 40%

My battery is dismal on 8.0. Can anyone help?

Now. This is bad.
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Ugh. I need some assistance. I've done all I can to maximize battery life, but my phone is just not going to cooperate. According to battery apps my battery is healthy, but you have got to be kidding me. Look at this. It's quite terrible.

Is that like 1 hour into a new rom or something...looks like you have no battery stats to go by. Plus if your stock 8.0 stand by is horrible... Flash a custom kernel and underclock the large cores...that has really changed my battery life.

noXcape said:
Is that like 1 hour into a new rom or something...looks like you have no battery stats to go by. Plus if your stock 8.0 stand by is horrible... Flash a custom kernel and underclock the large cores...that has really changed my battery life.
Click to expand...
Click to collapse
It is just a few hours after turning on my device. I will record my battery percentage throughout the day and repost a new image. It's pretty dreadful

It gets better. Don't worry to much. I still recommend flashing a custom kernel.. there are some really good ones around here and underclocking the big cores has really changed this device for me

AlphaRidl3y said:
Now. This is bad. Ugh. I need some assistance. Look at this. It's quite terrible. :crying:
Click to expand...
Click to collapse
Check your battery capacity with a program like Accubattery like everybody else does. Have you not read the 25 or so other battery threads here on the exact same topic? Step #1. Test your battery!

Gsam battery can offer some good battery stats as well. You will want to enable ADB on your 6P and then you can enable more stats in Gsam. ( google Gsam enable more stats)
What helped my battery life was turning off bluetooth scanning ( search bluetooth scanning in settings). Gsam was showing a bluetooth wakelock using a lot of battery.

v12xke said:
Check your battery capacity with a program like Accubattery like everybody else does. Have you not read the 25 or so other battery threads here on the exact same topic? Step #1. Test your battery!
Click to expand...
Click to collapse
I probably should have stated that I have done this and attempted to root and use gsam and the like to disable wakelocks, and mess around with alarms and services. No increase of screen-on time.

I put in a new battery and with stock 8.0 it was about 2.5 sot. Got rid of stock kernel and started tweaking some things and get like 4 sot. I don't really trust the battery apps. They have done nothing for me

noXcape said:
I put in a new battery and with stock 8.0 it was about 2.5 sot. Got rid of stock kernel and started tweaking some things and get like 4 sot. I don't really trust the battery apps. They have done nothing for me
Click to expand...
Click to collapse
I can't even get 1 hour screen on.

noXcape said:
I put in a new battery and with stock 8.0 it was about 2.5 sot. Got rid of stock kernel and started tweaking some things and get like 4 sot. I don't really trust the battery apps. They have done nothing for me
Click to expand...
Click to collapse
I can't even get 1 hour screen on.
I haven't used my phone virtually all day and I'm down to 60%

PS. Any suggestions for a custom kernal?

I'm stock 8.0 ATM using ElementalX
I underclocked the big cores to 1500 /small leave stock at 1500
Leave off all the gestures to wake
Also turn off WiFi and Bluetooth scanning
I turn off location until I need it and keep brightness at 50%
If that doesn't help u prbly should replace ur battery
I bought a new back when I did my battery... it was pretty easy.
About 40 $ total..that's battery and back with new glass and bottom trim
If you do it urself just use suction to separate the body from the screen and watch out for the display ribbon under the center of the battery

noXcape said:
I'm stock 8.0 ATM using ElementalX
I underclocked the big cores to 1500 /small leave stock at 1500
Leave off all the gestures to wake
Also turn off WiFi and Bluetooth scanning
I turn off location until I need it and keep brightness at 50%
If that doesn't help u prbly should replace ur battery
I bought a new back when I did my battery... it was pretty easy.
About 40 $ total..that's battery and back with new glass and bottom trim
If you do it urself just use suction to separate the body from the screen and watch out for the display ribbon under the center of the battery
Click to expand...
Click to collapse
Alright, thank you so much! I will be trying both of these.