question

Hi Peter. In general terms, no, 33V isn't normal for FLA batts. Best not spend too much time there, and if you can top them up with water, do that too.

I'm unfamiliar with that device, so curiosity urged me on. Seems to be a specialty charger for mobility scooters? Not much info in the brochure or manual, except 'return to the dealer for adjustment'.

I spotted mention of 'dip switches' and software. The software (for pc) is available here:

https://www.victronenergy.com/support-and-downloads/software

But I can't say or see what you need to plug it in (usb??), nor where the dipswitch(es) are, or what they might do.

So consider this just a bump. Hopefully someone can chime in with something more useful..

Thanks for the quick response!

I stopped charging after 10 minutes, batteries are full to the max with water. Charger is indeed for electric scooters and information about the charger is very poor.

Dipswitches are set for the batteries with max 140 amps.

I can make a USB cable, but need a example or wiring diagram so I can read out the charger