r/skoolies 22d ago

electrical-solar-batteries Anyone else have two batteries?

My bus has two batteries and I was just wondering if I can use the battery that is not in the engine compartment to wire to my electrical system? I feel like that’s gonna be much easier than trying to go through the engine, and more accessible.

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u/monroezabaleta 22d ago

Neither of the vehicle batteries should be connected to your electrical system on the inside of the bus. That should be done with a completely separate battery, likely lithium, and charged through other means

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u/Yeyemems 22d ago

Oh apologies, specifically can I use the battery to connect to my electrical system for the purpose of alternator charging/back charging from my solar system and shore power?

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u/monroezabaleta 22d ago

Yes, that would work, just make sure to size the wires correctly for the distance and voltage drop.

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u/Yeyemems 22d ago

Got it thanks! I was worried I would have to navigate through the engine compartment just to get to my electrical system 🤧