Installed a dual battery today. I went for a Bluetti EB55, with 450Wh consumable power out if LiFePO4s and 700W inverter. Got a good deal on it, which makes it cheaper than individual components.
It has all connectors on the front, a flat top and nicely fits the Eurobox-layout, my interior storage is based on.
It charges on 12V and 24V at 8A (regardless of actual voltage), so in my 24V BJ73 it charges at almost 200W. From empty to full in just an average wheeling day.
At 8A it would flatten my starter battery in no time, so I run the charge line trough a battery guard and a relais switched by the ignition.
The box supports simultaneous charging and discharging. The 12V outlet connects via XT60 connectors to my vehicle's power distribution (fusebox, USB, DC sockets, lights and fridge). All my devices are dual 12V/24V. When I take the power box out of the vehicle, I can connect the XT60 24V charging line to the distribution inlet, to power my devices from the starting battery.
Cheers Ralf
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