Ferei BP4872B 5200mAh 7.4V Li-Ion 18650 Battery Pack + 80cm lead
Professional lithium battery power pack used for rechargeable headlamp HL50. Contains 4 x 18650 rechargeables in a sealed unit. 80cm extension lead included!
Comes with a 80cm meter water resistant cable so you can mount the battery pack on you belt or bike frame for example.
Packs a whopping 5200 mAh at 7.4V
Will charge from the Ferei power adapter that comes with your rechargeable Ferei headlamp.