Both battery isolation systems used by Newmar , will isolate the coach battery from the alternator if the system detects the coach batteries are at what they consider fully charged for a lead acid ; to prevent overcharging .
You need to update the system to accommodate Li batteries .
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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