Thor Forums

[bevedfelker]

If you have a Battery Control Center (TH-1030) in the storage area under the driver's seat. When the coach is on shore power and the coach battery disconnect is engaged (USE/STORE in USE), the converter will charge the coach battery until it reaches 13.2vdc, at which time the interconnect relay will close after the 10-15sec. delay. This interconnect relay in the BCC controls battery charging to both chassis and coach batteries.

If you don't have a BCC you should have a Trombetta and BIRD under the hood toward the driver's side. These two devices control when and under what conditions the coach and chassis batteries are charged. The attached picture shows the Trombetta with red wires and BIRD (rectangular box next to Trombetta).

One point -- The USE/STORE switch must be in USE for the coach batteries to charge regardless of whether you have a BCC or BIRD/Trombetta.

So regardless of BCC or BIRD/Trombetta, both coach and chassis batteries should charge whether on shore power, generator power, or driving down the road with charging power coming from the engine driven alternator. Again, I can't stress this enough -- the coach batteries only charge when the USE/STORE switch is in USE (regardless of charging source.)

If your switches are positioned correctly and either the coach batteries or chassis battery are not charging, something is probably hooked up incorrectly and should go back to the dealer.