Descriptions: 3.7V Battery Single Slots Charger Black 

3.7V USB Cables Adapters Universal DC 5V To 3.7V Battery Single Slots Battery Charger For Rechargeable Lithium Li-ion 18650 16340 14500 17670 AA AAA Battery Charging Adapters

Features:

• Flexible size: One-slot charging and management system, Micro USB DC 5V input port, portable to carry around
• 500mAh, 1000mAh charging current for selection CC / CV charge mode to maintain a constant current flow and protect battery and users' safety
• LED indicators display the charging status 25% - 50% - 75% - 100%
• When you charge LiFePO4 or 3.85V battery, must fix the charging mode: Identifies 1.2V Ni-MH / 3.7V Li-ion batteries automatically and select manually for 3.85V Li-ion batteries and LiFePO4 battery

 Parameters: 

• Constant charging with cut-off current less than 100mAh
• Output voltage: DC 4.2V±1%, DC 5V;
• Power bank output: DC 4.9-5.3V
• Cut-off voltage for output: 3.0 + / - 0.1V
• Standby current: No more than 15mAh
• Output current: 500mAh
• Product Weight: 45gms
• Dimensions:112 x 37 x 32 mm