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Old 12-24-2015, 07:46 PM   #1
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Chassis battery

Quick question is the chassis battery getting recharged like the hose batteries or it actually need the engine to run to recharged. My radio keep shutting down and I think it is a battery problem I have been parked here in FL for a month and we listen to the radio everyday.
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Old 12-24-2015, 08:04 PM   #2
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Quick question is the chassis battery getting recharged like the hose batteries or it actually need the engine to run to recharged. My radio keep shutting down and I think it is a battery problem I have been parked here in FL for a month and we listen to the radio everyday.

If your coach was built after 2005 (+ or -) a couple years, your rig should have a "BIRD" or two directional relay which switches the charging source to both battery (banks) after a time delay. Your radio and all chassis loads should be supplied by the converter and all batteries remain on trickle charge. In a Georgetown, it's normally under the steps. A box containing the relay, a PCB and some fuses all control charging functions.


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Old 12-26-2015, 02:09 PM   #3
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You can download a product sheet for the Intellitec brand BIRD from this forum's library. I forgot which section. It will give you a full description of its operation including the voltages at which it energizes and deenergizes the battery interconnecting relay.

Yours may be a different brand but the operation should be similar.
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Old 12-26-2015, 02:18 PM   #4
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Well i think my own question was answered this morning. When I tried to start the engine nothing happened so I had to used the boost Botton to start it. So conclusion my 2015 motorhome
Doesn't recharge the engine battery only the house batteries. The radio in the dashboard works with the engine battery not the house batteries. Maybe my motorhome is different but that is how it works I guess, since
After a
200 miles I don't have a problem with my radio shutting down anymore and my engine battery is back to full charge
Anymore.
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Old 12-26-2015, 02:26 PM   #5
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What is your motorhome make and model? Perhaps it should charge the chassis battery but something isn't working right.
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Old 12-26-2015, 02:28 PM   #6
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I have a FR Georgetown XL 377 2014
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Old 12-26-2015, 02:34 PM   #7
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We have a Sunseeker so I'll let the Georgetown guys speak up on this question. If you can find the battery control center and get the manufacturer and model off the BIRD, that would help in figuring it out.
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Old 12-26-2015, 02:38 PM   #8
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I looked for the bird and could not find it. I just assumed that the engine battery is not getting recharged as the house batteries are. Why would we need a boost Botton using the house batteries to start engine if it was being recharge. Maybe I am not analyzing this the proper way.
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Old 12-26-2015, 02:59 PM   #9
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You should have a "Radio" switch on the dash. If you use this, it will use the house batteries instead on the chassis batterie. I don't think that the chassis batterie will be charged with the gen set. You are to use the switch that you used to link to the house batteries.
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Old 12-26-2015, 03:01 PM   #10
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Quote:
Originally Posted by tilap View Post
I have a FR Georgetown XL 377 2014
I have a GT 378 XL and the chassis battery is charged from shore power. The conditions to charge chassis battery are:

battery disconnect not disconnected
shore power connected
converter operating
when coach battery is charged to approximately 13.2 volts the charging of the chassis battery will occur in parallel with the coach batteries.
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