Hey J, for your 2017 Jeep Cherokee I recommend checking out the OptiMate Smart Battery Charger # MA99JR. This is a DC-to-DC charger that will work with flooded, AGM, gel, and LiFePO4 (lithium-iron phosphate) batteries, and has an included weatherproof case with an optional wall mount. view full answer...
Hey Dave, so you bought the # PD4645V converter section for your magnatek 6345 converter, is that correct? If so, the # PD4645V does have a jumper which can be set to the Li or Lithium mode. I have included a screenshot of the instructions below to show you where it is. With the jumper in the LI position the charger will maintain the lithium batteries with the required 14.6V. view full answer...