Well I'd try I battery saver first. I use easy battery saver and it really does make a difference. Juice Defender is cool.I'd advise against using the free version because it doesn't do a damn thing for you that you couldn't do yourself.
Also you might wanna try this script:
http://www.mediafire.com/?8q1tqeae7pyx9kc
Its a mash up of two great scripts that tweak your memory storeage, 3G and wifi speeds. I haven't monitored its effect on my battery but its made the things I mentioned a ton better. If you want more info on it, you can find the thread in Development (I'd link you to it but I can't do that in the app :/)
Sent from my MB870 using xda premium
Also you might wanna try this script:
http://www.mediafire.com/?8q1tqeae7pyx9kc
Its a mash up of two great scripts that tweak your memory storeage, 3G and wifi speeds. I haven't monitored its effect on my battery but its made the things I mentioned a ton better. If you want more info on it, you can find the thread in Development (I'd link you to it but I can't do that in the app :/)
Sent from my MB870 using xda premium