This is an extension of the previously published External Battery Charger Control (12V). It adapts the control for 6, 24 & 48VDC systems. Some of the differences are subtle so pay close attention. The ...

When shopping for a battery charger for your golf cart, you need to match the voltage of its battery system. You’ll have either a 36V or a 48V system inside your golf cart.

Now the battery charger is set and ready to go. Read a commentary on this article by Anoop Hegde: If You Build A Smart Battery Charger Using a Single-Transistor Circuit, Beware the Consequences.