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spacejim avatar image
spacejim asked

Please check my installation diagram (solar camper van)

I'm planning my electrical system for a camper van and would appreciate it of someone could check over my plan to make sure I'm not an idiot and that I'm not missing any important parts. The idea is to have a leisure battery charged by both solar and the vehicles alternator.
All parts (except van batt & alternator) will be Victron.

Am I right in that with the BMS CL and a Battery Protect on the loads I don't need any further battery management or safety devices?


Please forgive my terrible graphic design skills (F is fuse):
vanplan.png

wiring diagram
vanplan.png (74.4 KiB)
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spacejim avatar image spacejim commented ·

A very helpful answer appeared briefly then disappeared again.

  1. I apparently need an Orion Tr between the starter batt and the BMS CL. I'd be lying if I said I understood why. Also found this post that says put the Orion between the BMS and the lithium, so I'm pretty confused.
  2. Apparently the lithium has no overcharge protection from the alternator, but I thought the BMS CL was supposed to do that? If not, what should I add, another Battery Protect maybe?
  3. This post says the BMS is powered from the engine battery side, does this mean my engine battery will go flat if left unattented for a long time, or will the BMS also allow solar charging to get through backwards and keep it topped up?
  4. Apparently the inverter will drain the engine battery, what can I do about this? I assumed the BMS would prevent the engine battery discharging from loads on the leisure side
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huit answered ·

There is an issue with inverters being powered through the battery protect.

https://community.victronenergy.com/questions/63134/why-can-i-not-use-a-smart-battery-protect-between.html

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