I am pretty sure that my new Axis to be delivered in a few weeks comes with a Precision Circuits BIM. See https://precisioncircuitsinc.com/pro...ion-manager-2/
. I believe it is installed in the engine compartment on the driver's side. These suppositions were posted by a recent Axis owner so I expect they are correct.
The PC BIM is a bidirectional device. You can read about it by clicking the link in the upper right of the URL above.
I would like to use it to pass through solar charging current from the coach battery to the chassis battery to keep them both fully charged. That current will be fairly low as I plan to have only one 100 watt panel installed. And in the winter the max current I expect is 5A or so.
So, presumably the PC BIM has a solenoid that pulls in to connect the two batteries when the appropriate voltage levels are reached. Is it a latching relay type? In other words when it pulls in does the coil current stay on all of the time (non latching) or does it drop to zero until it gets a signal to unlatch (latching).
The answer is important because if it is pulling current all of the time (at least several amps if it a non latching type) it won't charge the chassis batteries very well.