Just installed my Smart shunt which is connected to two units…a wind generator charge controller and a SmartSolar MPPT 150/35.
I had a challenge getting the midpoint to read correctly. The instructions only show two batteries. It does not show more complex setups. I have 6 batteries configured as 3P x 2S. I had thought the midpoint would best be described as the middle positive post (the X) in the parallel line.
It’s not. The midpoint needs to be a positive point somewhere in the series other than the parallel connection. (in my case, the circle)
Victron, you should add instructions for more that two batteries as well as parallel-series configurations
You basically have this set up except your bus bar is in the center. So you need to connect your line where your circle is, that is the midpoint.
Source. Wiring unlimited.
I think if it’s for a custom set up then really it is responsibility of who ever is installing. Not every scenario can be accounted for. The principles are there and you have a handle on it.
More complex (suggests professional) should really be handled by someone who has taken the time to know and understand what they are doing. Those kinds of people shouldn’t need to be spoonfed.
A 2P2S is hardly a “custom setup.” and would be enough to infer that if you had a 3P10S for instance that the midpoint would be in a similar location.
One additional diagram to prevent a lot of troubleshooting seems like a reasonable request. After all, how many solar battery banks have just two batteries. Maybe for an RV, but that’s about it.
It is a little condescending to withhold information because “you think they should know and they should not be ‘spoonfed.’” Most DIY’ers are learning on the fly. They are pretty smart people, and probably could infer that if this is true for a basic 2P2S that it would most likely be similar for larger banks.
Pointing someone in the right direction is hardly “spoonfeeding.”
That particular manual was not in the box. I went online to try to find it, but apparently did not do a good enough job. I got it to work. That’s the important thing.
