SureFire Lithium-Ion Rechargeable Battery 123A White 3.6V. This allows the user to conveniently charge the battery using any USB power source such as a USB wall charger computer/laptop power bank or automotive USB port using the included USB-A to USB-C cable. Additionally an external RCR123 compatible CC-CV cradle charger (not included) can be used to charge the battery;possibly at a faster rate if so equipped. Specifications for SureFire Lithium-Ion Rechargeable Battery: Manufacturer: SureFire Battery Capacity: 900 mAh Power: 3.6 volts Weight: 19 g Additional Features: Lithium Ion Battery Battery Type: RCR123A Features of SureFire Lithium-Ion Rechargeable Battery: High-performance 3.6V RCR123 lithium-ion rechargeable battery with USB port for ease of charging no charging cradle needed When plugged into a power source the LED indicator displays the current charge state: Red for charging and Green for fully charged 900 mAh 8-10A discharge rat Package Contents: SureFire Lithium-Ion Rechargeable Battery SureFire SFRCR123: Lithium-Ion Rechargeable Battery 123A White 3.6V