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matt-potter asked

Battery monitor shunt installation on E.V aux battery

85ac4b72-d650-495c-8680-cedc8ab7de6b.jpegHi guys

Wondering if someone out there can answer my question?

I’m planning on installing a Victron battery monitor to the 12v aux battery on my electric camper (I recently upsized the battery so it can be used as a leisure battery). I want to be able to monitor the battery SOC to avoid running it too low and being unable to power and energise the EV system.

I also have an inverter installed, ground is taken to a good chassis point close to inverter location as well as 12v camper circuit with a pos bus bar cable to battery poss terminal and neg bus bar cable sharing battery neg chassis point.

Question is, will I get accurate readings if I connect the original aux battery chassis neg cable to the battery side of the shunt and to then add another equally rated short ground cable to the existing chassis connection point, using the vehicle body earth return.

See attached (very rough!) schematic sketch to explain what I have described.

Thanks in advance!

BMV Battery Monitor
2 |3000

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