Melasta Portable USB Dual Battery Travel Charger for SJCAM SJ4000 SJ5000 SJ6000 of Sunco, SJCAM, RioRand, AFUNTA, Tronsmart, MeGoodo, Tronsport Camera Input: 5V 2A, Dual Output: 4.2V 800mA each. Charging 2 batteries together, saving your time furtherly. Smart LED light indicates the charging state. RED light shows that the battery is charging ; GREEN light shows that the charge is complete. CE Certified.No memory effect. All Melasta branded items carry a 1 year warranty against manufacturer defects.