Rockbros 5200 Mah Mobile Power Supply 18650 Lithium Bicycle Lamp Cycling Rechargeable Battery Pack

Specifications: Brand ROCKBROS Color Black Weight 128g Size 2.3*8.5*4.3cm Capacity 5200mah Voltage: 8.4V 8.4V Charging method Data line charging Charging time About 4h Watterproof Yes Features: 5200mah bicycle headlight battery pack, waterproof, large capacity, you can quickly charge. Full 4 hours long battery life, 4h fast charge. Bundle binding installation, convenient and firm. Thick non-slip mat, not easily displaced. Package included: 1x 5200Mah Power pack