The Fenix ARE-D2 is a dual-channel smart charger, built for different types, and different size, rechargeable batteries, whether it be Li-ion, Ni-MH or Ni-Cd. Supports Micro USB charging at 2000mA, which makes charging even faster, and USB discharging to keep you other devices charged too. A high-definition LCD screen clearly displays 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.Battery Compatibility:Li-ion batteries: 10440, 14500, 16340, 18650, 21700, 26650Ni-MH or Ni-Cd batteries: AA, AAA, CVoltage:4.2V: 10440, 14500, 16340, 18650, 21700, 26650 (Li-ion)1.5V: AA, AAA, C (Ni-MH/Ni-Cd)Current:[email protected]/[email protected]/[email protected]: 10440, 14500, 16340, 18650, 21700, 26650 (Li-ion)[email protected]/ [email protected]: AA, AAA, C (Ni-MH/Ni-Cd)Weight: 3.3 oz. (92.3g) excluding cableSize: Length: 4.8 (123mm) Width: 2.4 (62mm) Height: 1.2 (30mm)