NiCd battery discharger

After a battery has been discharged, it is often found that tbe separate cells have been discharged to different values. This is, of course, not good for the battery and may shorten its life considerably, which is an expensive business. This danger may be prevented by discharging the cells individually by a circuit such as the one in the diagram. Since this discharger is inexpensive to build, several can be used in parallel.