Includes 2 x rechargable batteries
NiMH batteries are charged within the transmitters
Versatile unit charges ATW-T220a handheld transmitters and/or ATW-T210a UniPak® transmitters (in any combination)
Built in safety feature monitors cell voltage and automatically turns off the unit if problems are detected
Automatic shut off if alkaline (non rechargeable) batteries are installed
Automatic shut off if damaged batteries are installed
Trickle charging prevents battery self discharging until the transmitter is removed from charger