New Victron 3 phase Multiplus-II 6k5 setup with 50.67 kWh storage (Gelderland, Netherlands)

Thanks for the quick response, I have the same, but the other way around (jk being lower then smartshunt) :wink:
Just checked: Currently coming from 100% all are on 94%, that’s a first time I saw all values being the same.

Ik had die video van RobertDIY gezien ja. Dat leek me sowieso leuk (en goed) om toe te voegen. En relatief eenvoudig en goedkoop.

Qua ventilatie is deze ruimte straks apart van het huis met een eigen ventilatiesysteem. Dus heeft voor de rest van het huis geen temperatuur effect. En ja idd onder aanvoeren, boven afvoeren.

These are my current values:

not sure how this wil develop over time, but I read a couple of percentage points is to be expected and should re-sync every time it gets to 100%

This depends primarily on how often and for how long low currents are drawn. My 15 kWh battery drops from 100% to 25% SOC overnight due to a constant grid feed-in, and during this process, an SOC discrepancy of 16 percentage points develops between the JK BMS and the SmartShunt. In an extreme case, the JK BMS showed a current of 16 A, while the SmartShunt simultaneously showed only 3.1 A.

After just two days without a full charge or balancing, an SOC discrepancy of 30% can build up. You cannot operate an ESS properly with such inaccurate SOC readings. That is why I strongly recommend that all users with a JK inverter BMS leave battery monitoring to a Victron SmartShunt. The combination of the JK BMS and the SmartShunt creates a near-perfect BMS system at a very low cost.

Is it just me? I find it tiring when side discussions in other languages ​​(in this case, Dutch) keep cropping up in English threads.

There is a translation button…, but if I write a post on my phone I cannot translate it before I send it.

Usually I write my post on a PC with several translation options.

I write longer posts with google translator app and copy it to victron forum if I’m at my phone.

This looks reaaly great, compliments to you. I’m also working on a Victron setup but I’m a little in doubt. At one side I know what I need/want, but at the other side I’m worried about the requirements from the insurance companies. How did you manage this?

The multiplus II inverter/chargers have a large toroidal on the top part, the internal ventilation is mostly for the inverter electronics parts. It takes air from the bottom and goes out the top. The side to side space is not as critical ar the bottom/top clearance. On my system I’ve cleared out a large air outlet on the top since the area I have is not really temperature controlled…

So I think I have it set-up as you recommend. If could you please let me know what I can improve :innocent:

Thank you! So insurance wise (in the Netherlands) for a consumer, there are a couple of insurances which limit it to 20kWh, a couple who straight up do not mention anything, there are business insurances and then you also have custom insurances (through a independent intermediary). Which (for now) is probably the direction anyone needs to go in. When getting the custom insurance they will set certain demands (E.g. NEN-1010, Scope-12, PGS 37-1, or just certain parts of it). As I still need to do some work on my system and the room it is in, I did not get a custom insurance yet. But my current insurance doesn’t mention anything about home batteries in their terms.

Do you have a picture of your modification to the top? Quite curious what you did here :slight_smile:

I’ve only installed it on the top of a mounting plate with a hole on the plate for the air to flow out. I don’t want to mess with warranty of the units.

Although I’ve opened one of the inverters to see how was the air flow and overall built quality.

My system is installed on an attic so airflow is a must

Looks very good. Clean