Charging 24v System With 12v Charger

In the examples below two 6v batteries in series 12v.

Charging 24v system with 12v charger.

The 24v systems that employ 12v batteries can be recharged with a 12v alternator by simply being plugged in like any other 12v battery. It s a 24 volt system but it s actually two 12 volt batteries tied together. While selecting the correct charger to charge and maintain batteries which are wired in series using genius or gen chargers the battery system must equal out to 12v unless using the 24v mode on our larger chargers the batteries must equal 24v. While most vehicles use a 12 volt 12v electrical system many buses and some boats utilize a 24 volt system.

Lst 12v 24v truck battery charger maintainer auto trickle deep cycle charging for automotive car marine boat rv sla atv agm gel cell wet lead acid batteries 4 4 out of 5 stars 17 87 99 87. Mohoo solar charge controller 30a solar charger controller 12v 24v solar panel intelligent regulator with dual usb port and pwm lcd display upgraded 4 1 out of 5 stars 253 15 99 15. With this system you must make certain that the 24v or 36v which will for an instant be applied to the 12v charger will not damage it. Some 24v systems actually employ a series of linked 12v or 8v batteries.

Alternatively you must arrange that contacts b and c make first energising the relays before the charger is connected. There are many options available to purchase but i would stick with a marine option that is designed to be in wet environments. The batteries look like this. As far as charging boat batteries on the water test your system on land and always use the correct size fuse and proper gauge wires safety.

If your boat has a 24 volt battery system it probably has two 12 volt batteries that are wired together so that the negative post of the first battery connects to the positive post of the second battery. I ve already tried connecting them and in the second picture is the only way that the battery charger will actually charger it will not charge any other way that i connect them.