"I like the light which tells you that the switch is on. It can switch on in both directions, to reverse motors. It doesn't stop motors when you turn it off like the old 9v battery box with buttons usually did. I like that it uses AA batteries instead of a 9V battery because AA last longer. This battery box is the only one I know of that can run the IR receivers, even with the extension wire."
"I tested the cable, and found that it could power old 9V systems from the new battery box or an IR receiver. The only difference was that motors don't stop immediately after you turn it off, like they usually did with the old battery box. This cable also powers new motors from the old battery box, but it cannot power an IR receiver, which requires the new battery box and all 4 wires of the new cable. (This cable only converts the 2 motor-powering wires.)"