Our off-grid battery test caused a complete blackout.
Before attempting 20 days through France without campsite electrical hookups, we put the motorhome’s lithium batteries, inverter, solar and portable power stations under a real high-draw load.
Watch the 9-minute test
The system looked ready—until we switched on the Ninja Combi.
The 1,600W test caused repeated trips, a warm battery connection and a full blackout. The EcoFlow DELTA 2 handled the same appliance, leaving us with an urgent wiring problem to solve before France.
This is not a laboratory review or a claim that every system will behave the same way. It documents the equipment, symptoms and suspected wiring issue we encountered in our own 2020 Swift Kon-Tiki.
Lithium battery bank
The setup shown combines a Q-Batteries 150Ah LiFePO4 battery with a Renogy Core 300Ah lithium battery—approximately 5.7kWh of advertised storage before the portable power stations are included.
A genuine 1,600W load
A Ninja Combi was used to stress the system. The inverter repeatedly tripped, a battery connection became warm and the motorhome eventually suffered a complete electrical blackout.
The wiring question
The test raised concerns about uneven current sharing between different batteries and whether each battery needed an independent negative connection to the main busbar.
Solar, alternator and portable backup
The wider setup includes 600W of flexible solar panels, a 70A Sterling battery-to-battery charger and EcoFlow DELTA 2 and DELTA 3 portable power stations.
Jump to the evidence
Key test chapters
Go directly to the batteries, inverter, blackout, EcoFlow comparison or proposed wiring fix on YouTube.
High-current motorhome systems can be hazardous. Faults, hot connections and battery installations should be checked by a qualified professional using the manufacturers’ instructions.
Q-Batteries 150Ah LiFePO4 battery
Renogy Core 300Ah lithium battery
Sterling Power PCS122500 2,500W inverter/charger
Renogy Rover 30A MPPT controller and 600W flexible solar
Sterling Power BB1270 70A battery-to-battery charger
EcoFlow DELTA 2 and DELTA 3 portable power stations