This is a proprietary lithium-ion rechargeable protected-cell battery. Its capacity is 4000 mAh.
This battery was designed to be used in and recharged with our Maelstrom Regen MMU-X3R only.
It will not work with any 26650 lights or the previous generation MMU-X3.
Warranty for Consumables: Since the battery is considered a "consumable" product, its warranty is 12 months. Please see our Warranty page for information about warranties.