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camper2430 asked

BMV-712 - Inaccurate data, bluetooth issues and head unit flickering

I have three main issues:

Issue 1

I set up my BMV712 a few days ago but it is indicating weird data. My setup is 120Ah lithium battery, Redarc 1225DC charger, no solar connected and no other load connected at moment. I have all load negatives to shunt load and only the aux battery negative to the shunt negative.

Below is a picture of the SOC after I reset it manually to 100% and it apparently drained after 5m - Yet i know the battery is near fully charged.img-5833.png

img-5835.pngimg-5834.png

Issue 2

The bluetooth conneciton is also very inconsistent - sometimes it lets me connect and other times it fails at 20%.

Issue 3

The head unit appears to "flicker" so much that I cannot read the data. Do I need to replace the RJ12 cable?


Thank you for any assistance.

BMV Battery Monitor
img-5833.png (239.2 KiB)
img-5835.png (168.6 KiB)
img-5834.png (250.7 KiB)
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klim8skeptic avatar image klim8skeptic ♦ commented ·
@camper2430 Could be a dodgy fuse or fuse holder, check, clean and tighten.

The fuse should be a 0.5 - 1.0a unit.

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