3.7 Volt Rechargeable Battery and Charger, REACELL 3000mAh Rechargeable Battery, 4 Pack Button Top NiMH High Power Long Lasting Batteries with Fast Dual USB Charger for Headlamp LED Flashlight

Battery SpecificationQuantity: 4 Pack. Battery type: 3.7V rechargeable battery. Capacity: 3000mAh, Voltage: 3.7V, Size: 65*18*18mm, Type: button top battery (Not flat top batteries. Please Choose a suitable type for your devices)

Universal USB chargerREACELL charger for 3.6V/3.7V Li-ion 10440, 14500, 14650, 17500, 17670, 18350, 18500, 18650, 20700, 21700, 22650, 25500, 26500, 26650, 16340 rechargeable batteries.

Wide Compatibility3000mAh 3.7 Volt rechargeable battery compatible for high power devices, such as headlamp, flashlight, radio, cameras, doorbells, LED lights, solar lights, toys, small fans, RC car, headlights, etc. Strong power for devices than conventional Alkaline NiCd NiMH battery.

LED indicator lightBoth charging slots have corresponding battery progress indicators. The blue light flashes to indicate that 25%/50%/75% of the energy is charged, and the 100% blue light flashes to indicate that the charge is fully charged.

Convenient designThe REACELL charger has a USB interface, which can be connected to a USB adapter, power bank, notebook, etc., and is small and light, very easy to carry and use.