7.4V 4400mah 18650 Li-ion Battery Pack For Project Lamp / Bicycle Light

Advantages:

High quality rechargeable lithium polymer battery
High-energy density

Light weight
Low-self-discharge
Low-internal resistance
No memory effect and rechargeable
Longer storage life
Chargeable up to 500 or 1,000 times
Cycle Life: 500 cycle
Wide range of applications
Adopts special technical and materials
Tags, plugs, connectors and PCM/PCB are available 
Customized configurations are accepted