Where to attach EcoFlow Alternator Charger to front leisure battery?

[jaydisc]

Hi,

I have an EcoFlow Alternator Charger that I'd like to connect to my leisure battery. I have a 2023 T61 Beach with only the leisure battery under the seat. Here is a pic I took without removing the seat:



I thought I would connect it to the circled nut, but that nut won't come off, and I've been since advised against that anyway (maybe that's why the nut is designed to not be removable?).

The cable I'm connecting is a heavy duty cable with an 80A fuse inline. The Alternator Charger supports up to 800W (~66A?).

So where can/should I connect it?