All batteries on your coach, chassis and house, charge when
1) shore power is connected. A simple drop cord from a 20 amp service will handle battery charging in storage.
2) driving the coach or running engine.
3) running generator
ANY of those conditions will charge every battery on your coach. A simple test to check for correct operation is to take voltage measurements during charging. Voltage should be above 12.7 on each battery and after being charged overnight the voltage will reach the 13.3 volt maintenance setting of the charger. Voltage higher than 13.3 would indicate the battery has not reached full charge and the charger is still in higher rate.
An easy test to check if driving is charging the house batteries would be to have someone turn on the inverter while underway and select the "supply voltage" mode of inverter display. It should read higher than 12.7 and could be as high as 14.5 depending on state of charge.
There is no need to add a battery tender on your coach as it has one built into the converter. As long as shore power of some type is connected, the batteries will stay charged.
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2015 Jayco Precept 35UN
Towing JEEP TJ with Roadmaster plates and bar w/Blue Ox Patriot brake
OR
an Aluma low bed trailer with HD Road King and/or Polaris RZR onboard
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