| Rechargeable 3.7V lithium?ion battery pack 2,000 mAh capacity for up to 5 hours of use Powers compatible Pulsar thermal and digital devices Full recharge in approximately 3.5 hours | Built?in charge level indicator Compact and lightweight: 3 x 1 x 1 inches; 1.4 oz Designed for multiple Pulsar product lines Subject to applicable U.S. export regulations |