Nitecore F1 Single Bay Li-Ion Battery/USB Charger

The single-bay F1 Li-Ion Battery/USB Charger from Nitecore provides an all-in-one charging solution for many commonly-used cylindrical rechargeable batteries. Ideal for use on the go, you may use solar panels or any 5V USB source for power. It is compatible with lithium-ion and IMR 26650, 18650, 17670, 18490, 17500, 17335, 16340 (RCR123), 14500, and 10440 batteries. The base automatically detects the needs of each battery inserted and determines the correct charge for it. When a charged battery is inserted in the unit, it can function as a power bank, transferring power to another USB device.