Can I use Smart Shunt with Wakespeed 500 and Small BMS NG. I do not have cerbo

[chrigu]

@HansBrodin

Smart Battery Protect for stopping the charging and prevent draining the batteries

This will not work, at least not when using a single BatteryProtect for both charge and discharge, since BPs are only unidirectional. So you could use one to shutoff loads and another to shutoff charge sources. But even then i would be cautious with shutting off a charge source with a BP. Theres scenarios where a reverse current can flow from the battery to the charge source, which would instantly fry the BP.

@HansBrodin

Can I use a Smartshunt as the shunt for the Wakespeed 500.

I assume you are talking about the shunt capability that the WS500 offers? For this you need a bare Shunt, without the electronics, see this post for example

Wakespeed WS500 Alternator Shunt or Not?

With the Lynx NG BMS and batteries you strictly speaking do not need the SmartShunt / BMV on the batteries as the Lynx BMS has a shunt built in. The Cerbo will force DVCC on when connected to the Lynx, however, you can leave the WS500 DVCC off. In your case I would suggest taking your SmartShunt / BMV and setting it to a DC energy meter and swapping it to either measure your additional charger so the Cerbo knows about this or measure the DC system that the Cerbo does not know about. The WS500 n…

But adding a shunt to the WS500 wont help much if theres nothing reading that information. I recommend to use a GX device and a regular VE.Bus BMS NG. The WS500 fully integrates into the Victron system, through Canbus. Then theres no need to physically switch it.