A spare 3500mAh battery pack for your Javelot Pro. 
It includes a tailcap so that it can be charged off the torch with the charge lead included with your Javelot Pro, and a storage pouch. 

Charge your spare on the go via USB MCC cable included with every Javelot Pro.

This is 3500mAh at 7.2V.
Javelot Pro Battery Packs are ONLY available in Black.

This product is not compatible with the M3XS-UT, M3X Triton or M2X Javelot.