After a short break over the Christmal Holidays, I'm finally back in the Off-Grid Garage!
Today, we are having a closer look at a strange phenomenon that has haunted my battery shelf for a long time. When fully charged, the middle battery keeps charging far longer than the other two batteries even they are all in parallel!
I made you an awesome white board drawing where we discuss both speculative causes: is the internal resistance in this battery higher or lower?
After measuring the internal resistance, the answer is clear. Clear as mud!
Battery resistance tester:
https://off-grid-garage.com/measurement-tools-and-analisers/
Upgrading to Aluminium Busbars. Will this solve the issues?
https://youtu.be/mdr5HZZRaTc
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The Sunfunkit DIY battery. Great product to build your own 12V battery. Use OGGA at checkout to get 6% off. More info here: https://off-grid-garage.com/diy-kits/
Video review: https://youtu.be/lpn6m2wNwVA
Best prices for Victron gear in Australia: Auto Parts Co has you covered.
https://www.autopartsco.com.au/?pd_products%5Bquery%5D=victron&pd_products%5Bpage%5D=5
(they have 4WD parts and accessories too)
Take a live sneak peek at the Off-Grid-Garage in the Victron VRM World (link at top of the page):
https://off-grid-garage.com/victron-connect-through-raspberry-pi/
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