The Car charger for Nicd Battery Packs circuit is very suitable for portable charger, with a few components, allows you to build them in a small case.
The number of silicon diodes across the Car charger output is determined by the voltage of the battery pack.Figure each diode at 0.7 volt. For example, a 10.9- volt pack would require 10.9/0.7 = 15.57, or 16 diodes.
