The PowerFlare PF-200R 6-Pack Rechargeable System comes with six of the PF-200R beacons in a rugged recharging case. The recharger is plugged into a vehicle hot point (12-30VDC), using a power cord that is included. With the purchase of an optional AC/DC power supply adapter for charging in a building, the recharger can be plugged into a 120VAC receptacle. This System is designed to be used on a regular basis and kept on charge between uses. The single RCR123 Lithium Ion rechargeable battery is replaceable at the end of its useful life (usually 2-4 years).