The charger is voltage controlled, can charge 2/4/6/8 AA/AAA Ni-MH/Ni-Cd rechargeable batteries at a time.
Automatically stop charging when detecting improper input voltage, defective or short circuit or non rechargeable batteries.
AC 100-240V 50/60Hz input for worldwide usage. Protects against wrong polarity charging and over charging.
The charger has a lot of cooling holes, very good at shedding heat.
Smart LED to show charging progres: RED -- Charging; GREEN-- Fully charged.