Routing the Cable to install a EcoFlow 800w Alternator Charger

[Vinczz]

Whoops. I missed that you had a Beach. I ended up connecting mine to the an open connector behind a 100 fuse on the positive bus bar, also under the passenger seat.

Like you, I have it set to the default 13V, and it's been working PERFECTLY. Expectations exceeded! When the smart alternator rolls back the current (if the leisure battery is already topped up), I can just invoke Max. Charge (a T6.1 feature, but I think there are tricks to impose this on a T6?) and the alternator goes back to pushing 14.4+ volts, and charges the EF in a jiffy. HOWEVER, I really haven't needed to do that at all. It's all just self-managed perfectly. I also have been getting the full 800W (in both directions!), but have scaled it back to 400W for day-to-day, and can crank it up if/when needed. I figure the car has a built in 300W inverter, so pulling 400W from the EcoFlow (while not using the inverter) should be keeping the alternator load within VW expectations.

Adding this has also added an amazingly fast and useful electricity hookup to my Beach. When camping this weekend, I plugged in the EF Delta to AC, and set the Alternator Charger to Reverse Charge, and both the EF Delta and Leisure AGM were topped up in just a bit over an hour (the Delta was down to 20%, and the AGM ~ 50% _usable_)

Triggering the max charge (on T6.1) is not so good if the leisure batteries are already 100% charged. Ideally, the California should have a float mode for the leisure batteries. The problem is that if the leisure batteries are 100% charged, their voltage is around 12.7V. If we set the start voltage of EAC to 13.0V, the Ecoflow battery will not be charged.
I tested the start voltage of EAC with 12.6V and it looks to work perfectly because the EAC is intelligent, it will quickly stop charging if the voltage is lowered. EAC adapts automatically the charge power to avoid emptying the connected battery (leisure in my case). This setting works also great with my solar panel. If there is not enough sun, the EAC will not empty the leisure battery, it will just take the few available watts.