Unfortunately that can be the case sometimes. My friend bought a G2 Touch a week before me, however even if we use the same settings/applications his battery never lasts as long as mine, he's gone and bought a larger battery and back cover now. This is a general phone issue really more common in smart phones, like when I had an iPhone the battery would barely last the day with moderate use, so I had it replaced under warranty.

 

I'm not sure if you're past your 30 days, but if not, mention this to Verizon, and maybe get a free one.

 

I agree, I had a Razr back when they first came out. My friend bought one the same week as I did so we had the exact same model of phone. We always treated our phone batteries the same, never charged until it said "Low Battery" and started to beep. After about 8 months, mine would start to beep "Low Battery" after about 18 hours of very light/moderate use. The funny thing was, it would sit there and beep for about the next 24 hours, so I always wondered if it was a battery, or software issue.

Either way it didn't bother me that much, I just got a new phone shortly after that.