Minimalist Solar Package - But installed without inverter - Advice apreciated please

Hi everyone,

I've installed pretty much this exact system in my van, except it's even simpler because I have no inverter.


I used the same wiring arrangement.
The system is all connected, but I'm not confident it's working correctly. I can find very few examples online of people using a fuseboard like this.

- because I don't have an inverter, should I change the wiring route in some way from his example?

-Following the example, the controller to battery positive output is connected to a fuseboard position. Instead of the main fuseboard positive. Seems strange, I can only assume it's a way of putting a fuse inline. Any thoughts?

- When connected in sunshine yesterday, my controller shows 14.4V. The battery reads 14.4V.
When disconnected, the battery reads 0.4V. After 2 hours of the controller showing "boost". Battery still reads 0.4V
I thought the voltage would have increased. I'm wondering if something is wired wrong. Also the controller was showing the under load symbol. When no load was connected.

- Has anyone used a SOK battery with BSM? I've done some research and I think it's in storage mode, because the bluetooth management won't connect to give me data.

Thank you!

Wiring looks fine. If you get 14v at the battery terminals while charging, but 0v when not charging, then I suspect you need to somehow turn the battery on. The manual says that applying charging voltage for a few seconds should wake up the bms. If you can't see the battery in the app while charging, then there is a bms problem.

Here is an example that I built that is fairly similar to yours, with a couple of changes:



Same concept
- Fuse block for power going in / out
- Solar panel
- Solar charge controller
- One battery