Alternator not charging

Battery: Custom build LifeP04 cella

BMS: RecBMS

Regulator: Wakespeed WS500

Victron equipment: Cerbo GX, Multiplus, SmartShunt

I’ve been away from the boat for a bit, and only get out a few times a year I try to take a lot of notes, but they’re not helping me this time!

The wakespeed and new Balmar alternator are recently installed in the last year. I’m 99% certain it was working just fine on my last trip. When connected to shore power the system charges just fine - so we know a good portion of the system is talking properly. However I’ve gone underway and the alternator is not charging.

The Cerbo sees the regulator / alternator, and is making some data available:

I understand that field drive showing 0% might be a bug in the firmware (I’m running 3.66)

I thought maybe SOC wasn’t low enough to charge, as The current SOC is 98%. But yesterday I dropped into the 80s and it still didn’t charge. When on shore power it will keep it topped up even with a slight drop.

Any suggestions on where / how to start troubleshooting this? Thanks.

Its on float it seems.

Should be in “External Controlled”.

Update the WS500 to 2.6.1.

Also, the A-BMS to 2.9.7

Then go from there..

Thanks for the fast response. That makes sense about needing to show external controlled.

One quick question - this means I need to configure the Wakespeed itself? I reviewed the manual and this doesn’t appear to be a dip switch setting I guess that means bust out the cable and laptop to configure this setting (and of course required for firmware update).

I plan to be anchor tonight so I’ll have to see what I can accomplish from there!

This is the config file to use. But you may need additional configuration to make it work optimal in your setup.

https://www.wakespeed.com/wp-content/uploads/REC-BMS.zip

Bad news: no proper cable in board to program the wakespeed!

Good News. We used enough battery to get down to about 84% overnight. When we got underway this morning she charged right back up to 100% this trip is safe but I have some work to do

Thanks again!