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Old 09-08-2015, 10:07 AM   #1
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Charging System

Hello All, New to the Motor home game [2005 HR Endeavor 40'] and really enjoying it. Have had quite a few minor problems and some a little more serious such as my lift pump cratering, but its a challenge and things seem to work out. I am wondering if when driving down the Hwy if the engine altenator provides any charging whatsoever to house batteries ? Or does it just charge the two coach batteries.
Thanks and safe travels

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Old 09-08-2015, 10:51 AM   #2
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Location: Powell River, B.C.
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Alternator should be charging all the batteries; provided the charge rate is high enough.
The charge system on my coach , wants to see a charge rate over 13.2 volts for over 30 seconds at the coach batteries , before it connects all the batteries together.
It will do the same on shore power, when the charge of the coach batteries from the converter/charger is over 13.2v, it connects and charges the chassis batteries.
Testing of the system is easy , volt meter in hand with the engine running, for over a couple of mins., check voltage at both battery banks . Volts should be in the 13.5 >14.2v range and the same at both sets of batteries.
Do the same on shore power, to see if your coach is set up to charge the chassis batteries when you're in a site.

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 09-08-2015, 11:56 AM   #3
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Your HR is definitely wired to charge both chassis and house batteries from the alternator while driving. It also charges the house and chassis batteries from the converter, or inverter/charger, when on shore power. The unit that accomplishes this in your coach is known as the Battery Control Center (BCC).
'97 Bounder 34V, F53 7.5L-460
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