ON THE WAY&reg;4pcs 3.7V 18650 4000mah Rechargeable Li-ion Battery with PCB and 18650 battery Charger for LED Flashlight, Headlamps, search light lamp, etc Package include:4pcs 18650 4000mah rechargeable battery+18650 charger. Charge two battery one time. LED charging status indicator High energy density, long life battery. Charges 1 or 2 batteries simultaneously. No memory effect, can be recharged up to 500 times when fully or partially drained. Durable in low and high temperature operations.Fit for camera, watch, calculators, flashlights, etc.