The 21700 Lithium-Ion rechargeable battery with JST Connector is used in FLi-PRO Telescoping Light. This version holds 4000 Milliamp Hours of charge. Great as a back up battery!
This 4000mAh battery is found in the new FLi-PRO Telescoping Light and is our highest capacity battery available providing it with the longest runtime.
FLi-PRO Telescoping Light
 21700 Li-ion rechargeable 4000 mAh battery