Originally Posted by Mgulley82
Do most people just use some sort of isolator between the bus batteries and house batteries for charging off the alternator while driving?
Or does anyone use some sort of secondary charge controller (one for solar/one for alternator) to better control the charging from the bus system?
Iím just wondering if the bus alternator has sufficient charge control built into its regulator. We will be driving long days for the first few months on the road (8-10 hour days) and want to run our inverter and charge the system as much as we can off the bus system.
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It depends a bit on which house batteries you have, but generally, charging them directly with an alternator is not a great idea.
To get the most charge in, and the longest life out of your house batteries, they require a three-stage charge and an alternator can usually only charge at its fixed regulated voltage of 14.2-14.4V
The way to do this is to get hold of a charger that will take that input, and convert it to the charge voltages best for your batteries. They are out there, but they are not cheap.