Is Skylla IP65 charger compatible with DVCC SVS?

DIY
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1

I just installed a Cerbo GX, MultiPlus II, SmartShunt, SmartSolar MPPT, and Skylla IP65 charger among other Victron components on my boat to charge my 920AHr, 24V LiFePO4 house bank. My battery BMS is not able to communicate with the Cerbo, but I have DVCC turned on to use SVS (Shared Voltage Sense). I’ve also adjusted the charger settings so they are identical between the MultiPlus, SmartSolar and Skylla chargers. In theory all 3 chargers should be getting the same house bank voltage from the SmartShunt and reacting similarly. I have the MultiPlus II and Skylla connected to the Cerbo via VE.Can.

The MultiPlus II and SmartSolar “see” the SVS, but the Skylla doesn’t seem to be seeing the common SVS voltage, and uses the terminal voltage to adjust its charge stages. Consequently, they Skylla never gets to bulk charge, stays in absorption and I’m getting about 5A of charging, not 35A.

Can the Skylla IP65 “see” the SVS voltage over VE.Can? If so, what could I be doing wrong? If not, will Victron add this feature in future firmware versions? My Skylla is on the latest firmware version, v1.12.

2

Are you using ESS?

When using a shunt its best to leave SVS off in DVCC. {In an ess system}

Make sure the shunt is set as the system monitor.in system set up.

3

I am not using ESS. This is a boat application and we are mostly at anchor. It’s my understanding that ESS is not recommended in this application.

I have DVCC turned on, and all of its features turned off except for SVS. Since I have 4 charging sources (MultiPlus II, SmartSolar, Arco Zeus alternator regulator, and Skylla charger) I was using SVS so each source sees the same battery voltage and I don’t have to rely on a bunch of sensing wires. That’s my understanding of the benefits of SVS. Can the Skylla IP65 use SVS, or do I need to run a sense wire to the battery bank for that charger only?

I do have the SmartShunt set up as the system monitor in the Cerbo settings.

4

Happy to hear, not everyone follows advice especially when it doesn’t suit them.

You want everything to reference this voltage.

The Skylla is not listed under the devices that follow SVS in DVCC.

My apologies for the incomplete info for my previous answer above- SVS should be on when using the shunt in a non ess system. I have edited my reply.

Its in an ess system it must be off, in your case on.

Note (4)
For all other systems: If a BMV or SmartShunt is installed, we recommend enabling SVS and SCS. In all other cases, leave SVS and SCS disabled.