How To Charge A 24 Volt System In Series. Consider the 24v system above. This 12-volt battery pack is connected to a single 12-volt charger.

The relays are operated by a third contact B. Ever wonder about how to charge the 24 volt battery system on an MCI Motorcoach bus. Clip the alligator clip at the end of the wire from the negative - NEG or GND post of the battery charger to the jumper wire.
Place your charger where you can get to it easily to plug it in.
Connect a jumper cable to the negative - NEG or GND pos of the second battery. He should make sure the charger is 24volt capable otherwise it will let the smoke out. Charging 24 volt system with a 12 volt charger-Hi Jim I actually tried that method out a couple of months ago and it went OK for about 5 days and then the 4024 turned itself off due to low battery voltage. Place your charger where you can get to it easily to plug it in.
