Improving battery life?

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Note to mods: I copy pasted this question from another forum to get different answers. I am the same person, please be lenient.

Hello, I would like to improve my Evo's battery, because a few texts, a minute in the browser, and just scrolling through my email brings me down to 60-ish percent battery.

I'm running the latest MIUI with Tiamat 4.0.1 or something like that. I am also running JuiceDefender Ultimate.
My screen brightness is also at a constant low, too. I should have done more research on this phone, as I'm stuck with it for another 1.5 years. It sucks. :/

My friend's iPhone lasts for so much longer, it doesn't have a larger screen, but still..

What can I do to improve my battery?

Originally Posted by YouThere

Note to mods: I copy pasted this question from another forum to get different answers. I am the same person, please be lenient.

Hello, I would like to improve my Evo's battery, because a few texts, a minute in the browser, and just scrolling through my email brings me down to 60-ish percent battery.

I'm running the latest MIUI with Tiamat 4.0.1 or something like that. I am also running JuiceDefender Ultimate.
My screen brightness is also at a constant low, too. I should have done more research on this phone, as I'm stuck with it for another 1.5 years. It sucks. :/

My friend's iPhone lasts for so much longer, it doesn't have a larger screen, but still..

What can I do to improve my battery?

You can undervolt with vipermod

Sent from my PC36100 using XDA App

I've never used MIUI so I don't know what options you have for kernels, I imagine all AOSP Gingerbread kernels, but if I were you in would try out different kernels, even a different version of Tiamat could help. You can also try calibrating your battery.
If none of that helps, try switching roms.

Sent from my Supercharged MikG'd up EVO 4g while eatin some Chop Suey.
And hit that thanks button if I managed to help.

I've already calibrated my battery.

Won't ViperMOD hurt my battery?

There's always the obvious. Turn off what you don't need - GPS, 3G, wifi, Bluetooth, etc. I assume that Juice Defender helps with that but I've never used it. If you can use wifi instead of 3g then you should, it saves a lot of battery. If you're in a low coverage area, that will kill your battery as well. Going through your installed apps and uninstalling the ones you don't use will help as well. Back them up with TB first if you want to save their data or easily reinstall them later. Check your sync settings, if you have social networking apps set to sync every few minutes then that's also going to chew through your battery. Using push notifications instead of regular syncing can help - try FriendCaster if you use Facebook.

I'm also running MIUI with Tiamat 4.1.0 SBC. If you're not using SBC then you may want to try it out, it can help with your battery life. I ultimately gave up on sacrificing functionality for battery life. Instead I bought 3 extra 1500 mah batteries which came with an external charger. All together it was $11 on Ebay with free shipping, took about two weeks to get here. If you decide to go that route, you can just run the battery down and put in a new one... your friend's iPhone can't do that :P
I still use an SBC kernel even though my battery isn't usually charged through my phone. If I forget to charge my batteries or something, I'll sometimes put the phone on the charger when it gets down to 80-90% and charge it back up. When I do that the battery lasts all day and I don't have to switch batteries.
You can also buy an extended battery, but I didn't want a fat phone. I get just as much juice - if not more - from my cheap 1500s.

Supersonic Evo 4G | MIUI | Tapatalk

I'd recommend looking up Car-O-Dope's tweaks, it's helped me be able to run the governor at 128mhz-652mhz and not sacrifice any performance. This has saved my battery life. This guide will have you download rom toolbox and system tuner, and in system tuner you can undervolt your battery as well without having to run the Vipermod scripts. In rom toolbox I changed the wifi scan interval to the max amount of time possible, and changed the wifi sleep policy to never. I leave wifi on at all times, keeping the 3g off. My battery has never been better.

Originally Posted by plainjane

There's always the obvious. Turn off what you don't need - GPS, 3G, wifi, Bluetooth, etc. I assume that Juice Defender helps with that but I've never used it. If you can use wifi instead of 3g then you should, it saves a lot of battery. If you're in a low coverage area, that will kill your battery as well. Going through your installed apps and uninstalling the ones you don't use will help as well. Back them up with TB first if you want to save their data or easily reinstall them later. Check your sync settings, if you have social networking apps set to sync every few minutes then that's also going to chew through your battery. Using push notifications instead of regular syncing can help - try FriendCaster if you use Facebook.

This ^^^. Especially checking your accounts and sync settings

I just found a battery calibration the other day in viperboy's rom thread in e3d thread. Check that out n try it. I'm on the last part now so we will c how it goes.

Support TrevE !

So is this normal?
I put it to charge overnight, then earlier today. Would be dead by now if I hadn't today.

Originally Posted by YouThere

So is this normal?
I put it to charge overnight, then earlier today. Would be dead by now if I hadn't today.

I don't think the Android System should be using that much battery. Mine has always been around 2 to 4 percent.

Sent from my Supercharged MikG'd up EVO 4g while eatin some Chop Suey.
Hit that thanks button if I managed to help.