Coach Batteries Won’t Charge From Shore Power

[Sprinterguy]

The coach batteries will charge whole running the engine but stopped taking a charge when plugged in to shore power. It's a 2020 BTOURING on Ford chassis

 

[L Spillman]

I have owned 7 different manufacture's motorhomes and the only one that charged the house and chassis batteries was a 2017 Tiffin. I always had to remove the charging relay and add a Bi Directional Relay. The following Video will explain. This is not my video.

Do RV batteries charge when plugged into shore power? - - Video Search Results

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[Ronald1955]

The coach batteries will charge whole running the engine but stopped taking a charge when plugged in to shore power. It's a 2020 BTOURING on Ford chassis

We have solar so we are adding, our solar installer is adding this to our unit. It is a battery maintainer rated 15 amp. We do have 800 watts of solar.

 

[Den-GSO]

The coach batteries will charge whole running the engine but stopped taking a charge when plugged in to shore power. It's a 2020 BTOURING on Ford chassis

Have you checked the circuit breakers behind the batteries underneath the black metal plate?

 

[THenne1713]

The coach batteries will charge whole running the engine but stopped taking a charge when plugged in to shore power. It's a 2020 BTOURING on Ford chassis

Battery Switch= ON? 2) 120v breaker to Converter= ON? Cycle it OFF/ ON to reset? 3) 12VDC BREAKER next to battery tripped? = Small rectangular box with two posts and usually small reset button on a narrow end, often hidden by the wires. If sticking out any= tripped, should be flush. 4) You should be able to read converter charging voltage= 13.2 or higher at post OR FUSE in FUSE PANEL? Also possible 6-yo battery bad if original

 

[wildtoad]

Did you check the battery disconnect switch (aka Salesman Switch)? it may have to be on for the coach batteries to take a charge.

 

[Ronald1955]

Battery Switch= ON? 2) 120v breaker to Converter= ON? Cycle it OFF/ ON to reset? 3) 12VDC BREAKER next to battery tripped? = Small rectangular box with two posts and usually small reset button on a narrow end, often hidden by the wires. If sticking out any= tripped, should be flush. 4) You should be able to read converter charging voltage= 13.2 or higher at post OR FUSE in FUSE PANEL? Also possible 6-yo battery bad if original

Copied for my vehicle.

 

[Sprinterguy]

Have you checked the circuit breakers behind the batteries underneath the black metal plate?

checked them and are ok but still no charging from shore power but does charge while driving

 

[THenne1713]

checked them and are ok but still no charging from shore power but does charge while driving

Did you determine if you have 13.2VDC OR GREATER at the fuse panel when plugged in? (If you do= CONVERTER IS GOOD AND WIRED PROPERLY; IF NOT, LIKELY CONVERTER itself is bad or one of REV POL fuses is blown). 2) If 13.2 or higher at fuse panel. we now NEED to get it to battery/ ies. There are two REV POL FUSES (Reverse Polarity) that are commonly blown when servicing/ replacing battery; LOCATE (in the onboard fuse panel), TEST/ REPLACE THESE REV POL FUSES AS NEEDED, (usually around 25a-40a); 3) If you now get 13.2+ testing good on both sides of both of these, then likely one of the fuses/ 12vdc circuit breaker NEAR/ BESIDE BATTERY (within 18") is likely tripped/ disconnected, or a wire dropped beside battery and not connected? Good Luck.

 

[Ronald1955]

Did you determine if you have 13.2VDC OR GREATER at the fuse panel when plugged in? (If you do= CONVERTER IS GOOD AND WIRED PROPERLY; IF NOT, LIKELY CONVERTER itself is bad or one of REV POL fuses is blown). 2) If 13.2 or higher at fuse panel. we now NEED to get it to battery/ ies. There are two REV POL FUSES (Reverse Polarity) that are commonly blown when servicing/ replacing battery; LOCATE (in the onboard fuse panel), TEST/ REPLACE THESE REV POL FUSES AS NEEDED, (usually around 25a-40a); 3) If you now get 13.2+ testing good on both sides of both of these, then likely one of the fuses/ 12vdc circuit breaker NEAR/ BESIDE BATTERY (within 18") is likely tripped/ disconnected, or a wire dropped beside battery and not connected? Good Luck.

I did a search and found the following so I understand Research BIRD system in Claude for a better understanding. Now I need to test my coach.

 

[THenne1713]

I did a search and found the following so I understand Research BIRD system in Claude for a better understanding. Now I need to test my coach.

Use you part # and search and make sure the written document matches your part #; also your "found the following" was blank with no following

 

[Ronald1955]

I have found a lot of information for BIRD systems by doing Google search. You are correct that house batteries must reach 13.2 volts before BIRD relay shifts to charging chassis battery when on shore power by the information I have read. I need to plug my rig in and test chassis battery for charging.