Using 12v Outlet as Input for the battery bank

fiox89 · May 10, 2024

Due to lack of space and free contacts, I am considering using a 12V outlet connector as an input point. Let me explain better:

in normal conditions this 12v outlet is used to draw power from the house battery, with traditional 12v car chargers

if, instead, I used this outlet to bring power to the battery, for example via a 220v-12v charger, could this cause problems in any way? the outlet is a quality one declared 20A, as are the cables I used, and my input would only be 10A

the 220v charger will only be used occasionally, that's why this flying connection

Am I missing something, or is this perfectly doable?

Texas-Mark · May 10, 2024

Its fine as long as you stay within the current limits of the plug/cables.

0truck0 · May 11, 2024

is fine.
My first rig I added a DC outlet just for this reason - to charge from a charger that I put DC plug on. Ths outlet doubled as an actual outlet when not used for charing. Though, mine went straight to the battery and not through a fuse panel, still fused of course.
Was super easy way to hook up a charger for the few times I charged it that way. I didnt know much about this stuff back then. I would do it differently now, and the only draw back is you have a live DC plug with pos and neg metal contacts on the outside if you plug your charger in and dont have the plug plugged in to anything. - just dont short it out on anything.

fiox89 · May 11, 2024

0truck0 said:
is fine.
My first rig I added a DC outlet just for this reason - to charge from a charger that I put DC plug on. Ths outlet doubled as an actual outlet when not used for charing. Though, mine went straight to the battery and not through a fuse panel, still fused of course.
Was super easy way to hook up a charger for the few times I charged it that way. I didnt know much about this stuff back then. I would do it differently now, and the only draw back is you have a live DC plug with pos and neg metal contacts on the outside if you plug your charger in and dont have the plug plugged in to anything. - just dont short it out on anything.

Thank you both! I will use this charger for emergency only, and it will not normally be connected to 220v so there are no major problems with short circuit risks.

Using 12v Outlet as Input for the battery bank

fiox89

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Texas-Mark

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0truck0

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fiox89

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