We took the suggestion of one of the reviewers and bought a sports/motorcycle battery at WalMart. Not only was it cheaper, but what a difference in performance. Our grandson can ride it all day long on our farm up and down hills over all types of terrain with full power and no charge. There have been times when he rode all day, came back a week later and rode all day again without a charge. Thanks to the reviewer who suggested this, it's a great alternative to this expensive battery that will not last as long.