I am getting 12+ hours out of my battery. If you have a color screen, it will drain your battery faster.
Couple of things I learned is to keep your battery hooked up to the charger when you are not using it. The battery will lose it's charge just sitting there while not being used. Also, when returning from a trip, you should connect it to the charger even though it was a short trip. Partial charges are not good on a battery.
I thought I read somewhere that you should not overcharge the battery and I'm only assuming that the small charger is not an automatic type charger that will reduce the charge to a "trickle/maintain" voltage. Or am I wrong? Thanks for replying!