My daughters Leapster ran out of batteries. We just took a trip, to Wyoming, and this was the perfect time to test out these batteries. The drive is five hours and she wasn't playing her leapster Explorer, the entire drive, but she sure played with it, a lot. It has been a week, since we got home, and it is still going strong! Her leapfrog doesn't have a power cord, so we only use batteries, and these are working great! If you need AA batteries, these are a great choice. I received these for free, from Duracell, for my honest review.