Happyheart wrote:
when checking the water in the house batteries, is it necessary to disconnect the batteries to do so. if not, does the electricity need to be disconnected first. thank you in advance for your help.
Unless you can't access the battery tops in their mounted location (to move/remove/inspect them) then NO don't disconnect them unless you have a specific reason to do so. In fact, disconnecting them would INCREASE the chances of causing sparks/shorts which could be . . . . . . problematic, . . . . if charging/discharging gasses are present in your battery bay.
Prior to working/servicing the batteries, DO shut off all major loads (including the engine, generator, and shore power) and any chargers.
Clean up (neutralize) any spillage when you're done. Water with baking soda works great, and, it's cheap.
Chum lee