USB Smart Battery Charger 2 / 3 / 4 Slots Bay Fast Charging Wild Compatibility for Rechargeable Batteries Universal BMAX Portable USB 3.7V Li-Ion 18650 Battery Power Charger 10440/14500/16340/16650/14650/18350/18500/18650

Characteristics: Product name: Battery Charger with 2 / 3 / 4 slots Product model: BH-042100-04U Input voltage: DC 5V 1-2A conventional USB power supply Output voltage: DC 4.2V 1000mA Compatible battery model: 10440 14500 16340 16650 14650 18350 18500 18650 Protections: overcharge protection, overcurrent protection, over temperature protection, short circuit protection, reverse connection protection, over discharge protection Features: many slots for independent charging, no interference. Double color charging indicator light, red light when charging, green light when fully charged. The charging cut-off voltage is 4.23V, and it will stop automatically when fully charged without overcharging. The Battery Charger Manual: 1. This charger can only charge cylindrical lithium ion battery 2. Before use, please carefully refer to the instructions, pay attention to the recommended rechargeable battery charging current, do not exceed the recommended current charge; 3. Charger charge and discharge may be fever, be careful not to burn; 4. When you stop using it, unplug the power and unplug the battery. 5. Can only be used in normal room. 6. This product test data is for reference only, the actual situation, please refer to professional equipment. Packing list: 1* Battery charger (not includ battery)