My system is configure in DVCC mode. In the VRM BMS/Battery config, in the parameters tab page, I see the CVL value configured 57.60V (3.6V per cell). Where is this value originating from? In my JK-BMS config, I’ve NO value set to 3.6! The Vol. Cell RVC field is configured at 3.450V.
@Diessel
That is over voltage protection recovery value… 
This is value request voltage for charging from BMS
voltage protection recovery = OVPR
Sorry, my bad, the OVPR is below… 
Don’t know why, I checked again and the value has been updated. 53.6 / 16 = 3.35 is a value i’ve filled in into the BMS in the Vol. Cell RFV field.
Question, is the CVL value being updated (by the BMS to the Victron system) depending on the charging phase (bulk, absorption or float)?
Yep!
RCV = bulk & absorption voltage
RFV = float voltage
UPD: The charger listens on the CAN bus for what the BMS requests.
I gave You a link to video, where’s explained in detail the new BMS algorithm. And the meaning of each parameter JK-BMS.
1 Like
These values are forwarded by the BMS with CAN-ID message 0x351
Note that Victron code assumes that a higher voltage than 55.2V is the responsibility of the BMS. Like it knows what it is doing 
Before make your stupid assumptions that the 6 hour float charge and daylight are somehow related to my setup, you should clarify the architecture of my setup.
Otherwise, you look ridiculous.
UPD: Perhaps this screenshot will expand your imagination? 
It seems like you imply that the RFV time should run out. It’s not the goal for many systems. I am perfectly happy with RCV 1h and RFV 12h. If solar charges my battery full in the morning, the system floats for the rest of the sunny time, causing no extra unneeded stress for the cells.
1 Like
Your strategy is absolutely viable and economically justified.
Oh I get that things are not the same for everyone. But please note the part where I mention the two conditions that make it virtually impossible for us. Here. For us. With 16 battery packs. Yeah. Never going to happen. For us, There ain’t enough daylight to charge all of them to 100% Let alone float for six hours.
Hey come on. There is no need for this kind of reply. First and foremost. My reply wasn’t even addressed to you, your post, or you personally. But yeah I seem to have clicked the reply link under your comment. Wow. My bad. But still. That does not justify your kind of reply. Thanks but no thanks. Where is the report link….
When there is not enough solar power and you do not reach 100% SOC, the float charge mode is not available at all in JK-BMS. Carefully study the new BMS operation algorithm and how, when and under what conditions it requests different voltages.
Above I shared a diagram of the new algorithm.
Write less nonsense and don’t mislead other readers, then you will hear a different message.
Make a report quickly.