An update on the BTI: When it first arrived, I was getting maybe 4-5 minutes per charge. I still am not getting a ton of life from the battery, but I've only had it go through a few complete cycles. How long does it take for these batteries to reach their maximum life (that is, in terms of charge cycles)?

It's nice not to lose power when the cord comes out, but I'd like to get at least an hour from this battery. I'm debating about exchanging it through the warranty program.

Any thoughts?