VersaPak interchangeable battery system works with all VersaPak products. Provides a minimum of 60% longer run-time over the standard silver battery. VersaPak batteries do not have memory so the battery maintains its full length of cycle. VersaPak batteries are rechargeable and have a minimum life of 300 charge cycles. Includes: (1) model No. VP110 3.6V VersaPak gold battery and (1) model No. VP130 3 hour charger.