This portable charger can intelligently fast charge two rechargeable Li-ion, Ni-MH or Ni-Cd batteries from a USB power source - no mains power required. The charger automatically detects the batteries and sets the voltage and current accordingly for the optimum charge. Each spring-loaded cradle supports batteries up to 71mm long, including AAAA, AAA, AA, A, Sub-C, C, 26650, 22650, 21700, 18650, 14500 and more. Features zero voltage battery activation for protected cells, as well as over-charge, short-circuit, reverse-polarity, and bad battery detection. Supplied with Micro-USB power cable.

Features:
• Intelligent Fast Charging
• LED Charge Status Indicator
• 3.6-3.7V Li-ion
• 1.2V NI-MH/NI-CD
• 5VDC, 2A Fast Charging
• Short Circuit and Reverse Polarity Protection
• USB powered