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RV Batteries

Unsafe 12 volt RV House Battery

Responded to request to bring two 6 volt Trojan T-105 deep cycle batteries to an RV currently operating on two 12 volt batteries in parallel.

I discovered two Costco 12 volt marine batteries wired in parallel with very small automotive wire of some sort.  And connected to the terminals without any cable eyelets.

Two 12 volt Costco Marine  Deep Cycle Batteries in Parallel
Two 12 volt Costco Marine Deep Cycle Batteries in Parallel
Two 6 volt Trojan T-105 RV House Batteries in Series
Two 6 volt Trojan T-105 RV House Batteries in Series