2 * USB 9v Batteries Lithium Rechargeable 9V Block Li-ion Smoke Alarm TENIS UNIT
POOVER USB 9V battery feature. POOVER USB 9V Battery spec;. 【1.5 Hrs Fast charging】 by micro cable into any USB port anywhere. Input : 5V/0.5A ~ 1A. Battery Capacity : 680mAh @0.2C @ 25℃. Weight: 28g.