The Model i4 Charger is a universal, automatic smart-charger compatible with almost all types of rechargeable batteries. It will automatically identify Li-Ion (Lithium) batteries (it will handle 10 different types), and Ni-MH or Ni-Cd batteries (e.g. AA, AA or C) and apply the appropriate charging mode (constant charge current or voltage or trickle charge). Each of the four slots are microcomputer-controlled capable of charging different battery types simultaneously.
It automatically detects battery status and selects the correct voltage and charge mode. And it automatically stops charging when complete. Reverse polarity protection is provided. Works on any voltage between 100 and 240V, and a separate 12V car power cord is also included for mobile charging. This is a superb piece of gear.