Magicshine Micro-USB rechargeable battery pack, compatible with headlights using the 5.5×2.1mm round plug. Can be used as a USB power bank. Recommended for smaller bike lights MJ-900/900B/900S.

• 2*18650  cells, 7.2V  2600mAh capacity
• 5.5×2.1mm round plug standard
• Traditional A/C wall charger and USB rechargeable
• IPX 4 waterproof rating
• The battery cable can be removed easily and replaced with a waterproof silicon seal cap
• Comes default with MJ-900 & MJ-900S
• Not compatible with Monteer 6500S/8000S/6500S V2/8000S V2
• Accessory compatibility: MJ-6275 、MJ-6270