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Lynx Shunt vs. SmartShunt

Hi!

I'm building a new setup for a 24V system with Multiplus II for solar and wind. The battery system is flooded lead acid and I'm interested in monitoring the battery level and charge rate with a Cerbo GX. My question is about the following busbar setup I'm currently planning:


Left side: Lynx Power-In (4 IO slots)

1/ 24V battery system


Right side: Lynx Distributor (4 fused IO slots)

1/ Multiplus II 24V 3000VA

2/ Solar charge controller

3/ Wind charge controller

4/ Victron non-isolated DC-DC converter 24V->12V


It would be elegant to add a Lynx Shunt V.E. Can in the middle, but it would be quite expensive and the CNN-type fuse is crazy expensive. So my idea is to add a 500A SmartShunt between between lower negative bus and then a wire/plate between the upper positive bus. (On a side note, if the Distributor had 5 slots, I could only use that and put the shunt on the negative battery cable.)

Is there anything wrong with this setup for the intended purpose? Do I still need a separate fuse for the battery side?

smart shuntsmartshuntlynx shunt
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On a side note, if the Distributor had 5 slots, I could only use that and put the shunt on the negative battery cable.

You could also use the end holes (left side) and add your own fuse for the 5th positive wire. Then skip the Lynx Power In if you have a single battery (and do not have more batteries in parallel).


Do I still need a separate fuse for the battery side?

I would fuse the positive wire between the battery and the busbar.

I use a HRC fuse (in a fuse holder/disconnector) on that wire. But it takes more space.

You could also use the end holes (left side) and add your own fuse for the 5th positive wire

That's a great point! I completely forgot about that. I'll skip the power-in then, because we only have a single series of a batteries for 24V.

What do you think about SmartShunt vs Lynx Shunt? Is there any difference in VRM functionality or other matters?

You have multiple options for a shunt: Lynx Shunt, a BMV variant or the Smart Shunt (cheapest option).


If you don't need VE.Can, get the SmartShunt (which uses VE.Direct).

VE.Direct has a lower limit for the total number of devices, but still plenty for "normal" systems.

If SmartShunt would be OK, but you also need the relay, get the BMV-712 Smart.


In all cases, for VRM you need a GX device (such as Cerbo GX).

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