Hi all,
I'm in the process of converting a Peugeot Boxer L2H2. I've got a DC-DC charger (this one: https://uk.renogy.com/dcc50s-12v-50a-dc-dc-on-board-battery-charger-with-mppt-renogy-one-m1/). It also does the solar panels, but I'm interested in the DC-DC bit at the moment.
The starter battery is in the cab floor and the charger will be in the garage, so a cable run of maybe 4m.
The instructions say I need to run a cable from the positive of the starter battery to the relevant terminal on the charger and a cable from the negative of the starter battery to the negative terminal on the charger. That makes sense.
My question is, can I not do the negative to negative bit and instead earth the negative terminal of the charger to the chassis? Given that the negative terminal of the starter battery is earthed to the chassis.
I'd like to do this to avoid buying a second length of quite chunky cable and avoid having to run it through the van. I also think that not having the second cable will reduce the voltage drop from the starter battery terminals to the charger.
Is there a reason this is a bad idea?
I'm in the process of converting a Peugeot Boxer L2H2. I've got a DC-DC charger (this one: https://uk.renogy.com/dcc50s-12v-50a-dc-dc-on-board-battery-charger-with-mppt-renogy-one-m1/). It also does the solar panels, but I'm interested in the DC-DC bit at the moment.
The starter battery is in the cab floor and the charger will be in the garage, so a cable run of maybe 4m.
The instructions say I need to run a cable from the positive of the starter battery to the relevant terminal on the charger and a cable from the negative of the starter battery to the negative terminal on the charger. That makes sense.
My question is, can I not do the negative to negative bit and instead earth the negative terminal of the charger to the chassis? Given that the negative terminal of the starter battery is earthed to the chassis.
I'd like to do this to avoid buying a second length of quite chunky cable and avoid having to run it through the van. I also think that not having the second cable will reduce the voltage drop from the starter battery terminals to the charger.
Is there a reason this is a bad idea?