The Fenix ARE-X1 V2.0 is a single-channel smart charger, built to charge 18650, 21700 and 26650 li-ion batteries. Supports USB Type-C charging, as well as discharging, to keep your other devices charged too. A LED indicator shows the charging, discharging and battery status. The charger also includes multiple built-in protection circuits that protect against short circuits, over-current, over-voltage and reverse polarity. BATTERIES NOT INCLUDED.