Features: 1.Smart Battery Charger. 2.Charge Anywhere: Connect to any USB port (wall charger, power bank, computer USB port) to charge the battery. 3.Compact size, easy to carry Smart Battery Charger Single Slots and allowing you charge your battery at anywhere. 4.Automatically stop charging when the battery was fully charged. 5.Safety Protection- Perfect protection function, overvoltage protection, overcurrent protection, short circuit protection,anti-reverse battery protection, Zero Volume Battery Repair and excellent heat dissipation design. Specification: Colour: Blue Power supply mode: USB Charger Input power: 100-240V_50-60Hz Output voltage: 4.2V- 1000mA Size: 65mm x 65mm x 18mm (2.55in x 2.55 in x 0.7 in) No memory effect Environmentally friendly 100% Brand New Battery Type: Rechargeable Battery(Not AA or AAA battery) Voltage: 3.7V Capacity: 3000mAh Material: Li-ion Power: 11.1W Rechargeable times: Up to 1800 times !!Warning: DO NOT dispose in fire or heat DO NOT puncture,damage,and disassemble DO NOT mix fresh batteries with used batteries   Compatible with: Battery appliances such as emergency lighting, portable devices, power tools. NOT SUITABLE FOR VAPE. NOTE: Not AA or AAA Battery Package Contents: 1/2 x Single Slot Charger 2/4 x Rechargeable Batteries