The Sony battery that came with mine was a good one, but I bought an off-brand spare a few years ago with a portable charger that was lousy. I don't even think you could eek 70-80 shots out of it. This past summer though, I bought a RAVpower 2-pack of batteries with a micro-USB port charger, making it easy to use in the car, and those batteries seem to last just about as long as the Sony. So I start the day with three fully charged batteries ready to go and rotate as needed.