Li-ion Battery Universal EU Charger 18650 Single Battery 3.7v Rechargeable Battery Charger Specification: Brand: Unbranded/Generic Model: 18650 Single Charger Input 1: AC(100V-240V)  47Hz-63Hz  Output: DC 3.7V - 450mA Material: Plastic End Of Charge Voltage : 4.2V +1% & 4.2V-1% Weight(g): 40g Color: Black Plug type: EU For 3.7V batteries:18650 18350 14500 16340 10440 Features: 1. Slim and portable design 2. High quality and good performance 3. Perfect fitting 4.  Automatically stops when charging is complete.