Melasta 2X Rechargeable 3.7V 1100mAh Li-ion Batteries + 1x USB Dual Battery Travel Charger for SJCAM SJ4000 SJ5000 SJ6000 M10 X1000 Sports Action Camera Battery 100% Brand new Li-ion rechargeable battery (1100mAh, 3.7V,4.1Wh,CE Certified.No memory effect.). Dual charger ,input: 5V 2A, Dual Output: 4.2V 800mA each,charging 2 batteries together, saving your time furtherly. Great for SJ4000 SJ5000 SJ6000 SJ7000 and original charger. Smart LED light indicates the charging state. RED light shows that the battery is charging ; GREEN light shows that the charge is complete. All Melasta branded items carry a 1 year warranty against manufacturer defects.