1.8.4V battery pack, 4400mAh 2. 4pcs 18650 li-thium battery 3.rechargeable Waterproof Battery Pack(4x18650 or 6x18650)

Specifications:

1. 18650 Rechargeable Li-lion Battery Pack with protective circuit board

2. Capability: 6400mAh

3. Voltage: 8.4V-12V

4. Battery lifespan: Can be charged 500-800 times