Battery disconnect switch
We have two 12v house batteries dated 02/11. Best I can tell from my very limited knowledge, they are wired in parallel (+ to +, - to -). We are currently hooked up in an RV park for the winter. I ...
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The way I read it ,He is telling you to remove the negative cable from the supposedly bad battery. Then remove the positive cable that goes to the supposedly bad battery from the good battery,thus taking the bad battery out of the loop.After reaching that point I would go one step farther and remove the positive cable from the bad battery. Then test the bad battery. Sopposing the battery is bad and needs to be replaced will present you with the question of replacing both batteries. You really should not parallel a new and old battery since in parallel they feed off each other and the weaker or older will bring the new battery to its level denying you the full benefit of a new fully charged battery. The long and short of it, is to replace both batteries for the best battery life.
