You don't want to drain it empty every time. That could damage your battery. Just the first couple times and every so often as posted before
Sent from your mom's house using my Droid X
I just got a razr yesterday,and in one day of moderate use,ive seen the orange battery icon twice and charged twice..mine is a few weeks old i got it used,so the battery shoud be conditioned already.Im very concerned at this point...I understand about conditioning the battery,but who has time to do this? You cant replace the battery! If you run it down,you have no phone if you need to go....I work 6 days a week,and work odd jobs on my day off,with 3 kids,I cant afford to risk having a dead phone at anytime...if it was an ipod or extra device,no problem.This is my phone,and since i cant swap with battery and charging from 60% to full takes over an hour,i wont let it go below 40% unless its late and im home....Im thinking of trading for a bionic or just going back to the x2,which had much better battery life with the ext life batt...
Battery usage is such a user profile function. 1 guy has screen brightness turned up and is in a bad 3G area where it has to keep polling for service. The next guy lives in downtown Detroit where he gets 5 bars all the time and keeps his screen dim. The 1st guy will never be happy with any Smartphone. The 2nd can use any. :)
Now on the battery, it's different for everyone. No matter what settings I do or change I get 6 hours or so on cdma only. Because on a 10 hour shift at work my phone is on and I'm doing something on it 7-8 hours of that.
Typed with my Rooted RAZR
I've found the biggest battery saver, for me, is turning off WiFi when I'm not using it and turning off 4G when I'm not using it. With just 3G running (and GPS; no bluetooth), I get as good or better battery life than my OG Droid in the same conditions, all while getting significantly better 3G speeds (and I have 4G if I go surf the web or watch videos; 3G is fine for texting via GVoice, IM, navigation, etc.).
If you're draining super fast while idling and not on 4G, either you have a defective battery, a rogue app, you left WiFi on, or you're in a poor coverage area. Too bad that so many people blame a defective battery without checking the other things, first.
By deep cycling the lithium-ion battery in the Razr you are actually SHORTENING the lifespan of the battery. These batteries have no memory effect and SHOULD NOT be cycled. I quote:
"Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses."
How to Prolong Lithium-based Batteries - Battery University