Rechargeable CR123A 3.2V batteries (2). This is a popular battery that is found in cameras, photo equipment, medical equipment, tactical flashlights and home security systems.
LiFePO4 Rechargeable Batteries work in place of NI-MH, NI-CD, and Lithium Ion Batteries. Holds up to 2000 charges, 3 times as many recharges as NI-MH and Lithium Ion rechargeables. Auto overcharge and overdischarge protection stop the battery from overheating. Very fast recharge rate: Charges up to 85% of full power within 30 minutes. Environment Friendly: Non-toxic and non-contaminating.