One COAST ZITHION-X USB-C rechargeable AAA battery replaces up to 500 single-use batteries-cutting waste, saving money, and delivering reliable power with every charge.Specifications and Features: Chemistry: Lithium Ion Capacity (mAh): 750 mAh Capacity (Wh): 0.9 Wh Voltage: 1.5 V Approx Charge Time: 1.3 h Product Compatibility: All AAA Alkaline Devices Charge Input: USB-C Cell Size: AAA