i like cm9 but only get like 12 hours on it. hydro i would get around 20 hours. scott pilgrimss cm7 would get around 2 days but that one is way out dated. there are many great roms for this phone and the choice is yours
Re: [WIP][ROM]COLD AS ICE-CM9 Sprint LS670 3/20 ZVD basesband Alp
this is what i do. recharge the battery fully the reboot the phone and pull out the power cord