bluebarry1964b wrote:
My understanding is that ALL batteries, regardless of whether they are house or chassis, have to be replaced if even one house battery is shot? Am I correct?
NO.
BUT.....if the chassis battery is also 4 years or more old AND it hasn't had any special attention while in storage, it might be a good idea to replace it anyway.
DO check the main connections to the house batteries though.
And get them tested. If you can find an Auto Zone or WalMart with a big enough parking lot you can even get them tested right in the unit. To get a good test, they should be fully charged first.
