Using the Dc/Dc converter to charge Lithium house batteries on my motorhome when the engine is running. Since motorhome is often sitting for long periods without the engine running and plugged into power, I also keep a 4.5A battery tender on the starter battery all the time. My problem is that the battery charger will eventually push the lead acid starter battery up to 14+volts. When this happens the Dc/Dc thinks the engine is running and it turns on and pulls current out of the starter battery until voltage drops below the cutout and the cycle repeats. Is there some way to use the ignition switch on the L H pins to prevent this?
