Honda Alternator Fuse Blown

[T.R. Bauer]

Would it even actually matter if I ran on "both"? I have read a ton of information over the winter on running AGMs with lifepo4 in parallel and they had favorable results. All had BMS like mine, which is a failsafe, and many folks found that the lifepo4 batteries charged first, and then the AGM charged last. They also found the lifepo4 discharged first as they were using it and then finally the AGM started to kick in once the voltage started to get low enough. These were off the grid living folks doing it repeatedly and they were mixing them for economics. Obviously, they are different batteries and behave differently and running them in parallel is not ideal. However, I am starting to wonder with lower powered charging systems under 14.5 volts and less than 10 amps if any of it even matters enough to reach out to relion and pose the question.

[T.R. Bauer]

If anyone is interested still:

Timothy,

It is ok to run that combiner from time to time, the issues with combining the batteries arise when you turn off the motor. Regarding a fire, our batteries built in BMS provides protection features that would prevent that situation from occurring. What can happen when you turn off the engine is that the LiFePO4 batteries will sit at a higher voltage than your lead acid which would cause some energy to flow to the starting battery from the lithium units (again just turn the switch off to avoid this). That being said, you will not see great performance on alternator charging your starting battery by combining the units as lithium’s higher voltage will cause pushback on the system which will limit the charge rate and could leave the starting battery under charged (not dramatically but likely a bit) this would not be the case if you were utilizing an AGM battery for starting as opposed to a FLA.