Depending on how you wire a two battery 12 volt system the result can be a 12 volt system or a 24 volt system.
Charging 24 volt system with 12 volt charger.
While most vehicles use a 12 volt 12v electrical system many buses and some boats utilize a 24 volt system.
It s a 24 volt system but it s actually two 12 volt batteries tied together.
There are many options available to purchase but i would stick with a marine option that is designed to be in wet environments.
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.
If your charger is small enough to be carried aboard your boat you can leave these cables in place since the charging procedure requires it.
You can use a 24 volt charger or a 12 volt two bank charger.
That s way in some cases.
The 24v systems that employ 12v batteries can be recharged with a 12v alternator by simply being plugged in like any other 12v battery.
Some 24v systems actually employ a series of linked 12v or 8v batteries.
Cars trucks rvs and motorhomes run dual 12 volt batteries for various reasons.
The batteries look like this.
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.
No you can not.
I have a 12 volt battery tender here.