1. Input:100~240V 2. Max output: 6.8V/7.3V 1A 3. Charge battery pack: SLA 6V 5~10Ah 4. Charge mode: 3 stages CC-CV(H)-CV(L) 5. Size: 75 x 42 x 28mm Led indicate charging status: Red---in charging; Green---fully charged .Safety protection Short circuit protection Battery Polarity error protection Over voltage protection