Im using the Sept 4 24XXX CHT Dinik Glass rom with all the animations turned off,no auto update for anything,i do turn location services ON tho to improve my GPS location overall.Ive used the Maxx Batt Saver cab and it does help but it only made about a 10-15% difference for me,so i dont use it. The battery life is pretty good on the sept 4 rom anyway. The battery drains to about %80 within a cpl hours usually but between 80% down to 40% lasts almost 16-18 hours and I get about 20-26 hours of battery life depending on how hard i use my phone.
I think in the post mentioned above that guy got such good battery life because his battery is new and is 1800mah and my stock battery is 1500mah and is 10 month old and has powered alot of different roms and been used pretty hard. So a new 1800mah battery would probly get about 25-50% more battery life depending on how badly degraded the stock battery is.
Its is a good idea to let the battery totally discharge before rechrging but with the batteries in our devices being lithium ion batteries u really dont need to let the phone fully discharge before recharging very often. If u let the battery discharge to 10% once a week thats plenty. The fully discharge before recharge method comes from the old NiCD batteries that powered the very first cell phones.If Nicad batteries werent totally discharged before being recharged they developed whats called battery memory and would soon go bad and not hold a charge anymore.lithium batteries like lithium ion and lithium polymer batteries dont develope a memory so they are safe to recharge at any battery life level,whether its 10% or %80 its ok to recharge. I only fully discharge my battery before i recharge it once a week and its more for the devices benefit than for the batterys benefit.So the device gets the battery drain and some other settings correct.Its best to let the battery fully discharge before recharging especially after a fresh flash. Thats the best time to do it i think.After that once a week is plenty.My phone is always at about 10-20% when i go to recharge anyway.