This client had a system that would drain the starter battery and could not power the inverter or air-conditioning system without shutting down. They wanted to upgrade the system in the most affordable way to remedy these issues.
We installed an additional battery, battery monitor, larger wiring, fuses, and a ignition switched B2B charger to isolate the house and starter batteries.
We also installed two heated Scheel-Mann Vario F seats replacing the original Promaster seats.
Electrical upgrade and aftermarket seat install
Before: The current system was powered by a battery that could not support the 3000w inverter or the air conditioner, causing the battery to shut off. Additionally, there was no battery to battery charger so the "house" system would drain the starter battery over time.
After: A new B2B charger was installed with an ignition wire to eliminate the phantom load. The battery bank was sized appropriately for the loads and size specific fuses and cable were installed. We decided to augment the existing battery with a Li-Time 230 Ah bringing the battery bank to 400 Ah total and continuting to use the existing Renogy battery (Best practice is to use the same size/brand batteries in a bank, but the Renogy battery was discontinued). The previous undersized wiring had evidence of heat damage on the sheathing and the system was using thermal-magnetic breakers inappropriately. Appropriate inline fuses were installed and system cut-off switches were added to isolate the batteries and solar if needed.
The original Promaster seats are uncomfortable and have limited adjustment. The client picked out these seats for install. They are 10 way adjustable and are heated. The heat was wired to shut off the load when the vehicle is off for seamless day to day use.