Charger for CamRanger 2 batteries. Charges 1 or 2 batteries at one time. Comes with a USB micro cable. Rechargeable, replaceable lithium-ion battery Battery life: approximately 5 hours (less for Fuji cameras and use dependent) Charging time: approximately 4-6 hours Charge via: micro USB cable within device, external battery charger, or USB power bank Size: custom-sized 18650 (Not AA or AAA)