I don't know how anyone on here can say they're a "moderate" user. I don't think anyone posting on an Android forum is a moderate user. Can anyone give me a realistic battery life outlook on their Charge? I'm talking about 60-100 text messages, 5-10 minutes of phone calls, 2 email accounts set to check every 30 minutes, and about 2-4 of web browsing a day. That's what I use my Nexus S for and I get from 7:30AM to 11:30PM with about 25% left.
I pick my phone up about once an hour, and maybe spend 2-3 minutes on it to see what has updated while I'm at work. Some days I'll pick it up over lunch and dink around for a while, but I typically make 0-1 calls within my typical work day, and 0 text messages. If that's not light to moderate use, I don't know what is.
I have been getting 13-16hrs on 4G, 20+ hrs on 3G.