Thor Forums

[Beau388]

Originally Posted by The_Breeze

Thanks. Does the isolation manager have something to do with the chassis battery?

Just ordered 4 of these: https://battlebornbatteries.com/prod...cycle-battery/

Your coach's alternator assumes it is attached to a starting flooded battery. In order to have the parameters to hook it to a Li battery, you need a specific BIM to connect the batteries for charging with the alternator and or the emergency start switch. The charging profiles of the different battery types vary just enough to cause a problem. Second problem is you should never try to charge a Li battery if the temperature is below freezing. A Li-BIM knows that, as does a charger which has a LiFePo4 setting.


A little more useless knowledge - The motor's alternator regulator uses the internal resistance of the starting battery and the wire or cable between the battery and alternator to adjust the voltage and amperage to meet the chassis battery needs. Just adding a big battery bank to the chassis batteries charging circuit can and usually does damage the alternator by overheating and at best can lower the alternators output voltage below 13.2 volts. In order to have the two types of batteries to play nice with the alternator, you need a supervisor (Li-BIM).