Does power bank with dual usb output first 5v/2.4 and second usb output is 5v/1a can it supply power for viofo 5/3.1a?

[Allii]

I have shoehorned under a seat two of my four 26AH gel batteries to run accessories with the option of self jumpstarting.

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2 Victron DC-DC in parallel (above MPPT charger)
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47°C in Mildura a few years ago.
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That's a really good and organised set-up you have. But I don't have accessories and this will be costly.