D&F Dual Battery Charger with 4 Pack Replacement Battery 3.7V 900mAh Li-ion Compatible with SJCAM SJ4000 SJ5000 SJ6000 M10 Action Camera 3.7V Li-ion Battery 900mAh Get extra battery for journey back up Every port run with 1A current, astronomically promote charging speed. Safety Prevent battery overcharge, safe and reliable Package Include:4 x Battery ( Camera not include ) 1 x Daul Charger (With Cable)