Newmowa 1100mAh Rechargeable Battery (2-Pack) and Rapid Dual Charger for SJ4000,SJ5000,SJ6000,SJ7000,SJ8000 of SJCAM Sport Cameras Newest Top quality SJ4000 battery features 3.7V, 1100mAh with safer,longer life Includes 2pcs 1100mAh batteries, 1 Dual USB charger, 1 Mini USB cord Allows you power the Dual USB Charger with included Mini USB cord, also you can use your own micro usb cable. Can be powered with most standard USB Wall or Auto Charger or a computer Charges two SJ4000 camera batteries at the same time and Smart LED light indicated RED when charging and GREEN when complete