Hey Oz MG4 crew. Is anyone else having trouble with iSmart today? Mine is showing the wrong state of charge this afternoon. It's exactly 20% above the actual charge
Hi David. I'm not sure that the oxidization on the bottom outer shell would cause the leakage in and of itself unless its penetrated the aluminium jackets. If it has penetrated the jackets then its game over anyway. It still remains more likely to be leakage due to oxidization between metal...
I agree with @Coulomb start with an easy module. Flush them with lots of contact cleaner fluid especially around the terminals at the top. Scrub with a plastic brush and try to get under the strapping with something. See how it goes. I'm not so concerned about the bottom of the module but best...
Given how otherwise clean the top of the modules look in the photos I guess the worst of the conductive salts are going to be under the welded on cell link straps. Hopefully you can find something that you can push in under there to help clean it out with the contact cleaner fluid. Might not be...
Hi David.
Here's what I'd do next. Take one of the modules, say the worst one out of the pack. Take another reading from the shells/frame to the module terminals again just to confirm the reading. Then soak the top of the module in contact cleaner spray. Contact cleaner is a dielectric fluid...
Hi David. Yes looking at the photos I agree there's nothing obvious showing and the cells in the pack seem to be welded to the link straps so they cannot be disassembled further.
Are the cells in plastic or metal jackets? I can see aluminium under the plastic top frame.
Yes, given the pack is already pretty low it's just a case of bringing all the cells to equal the best one.
In answer to your question about mixing modules, I agree with @Coulomb . Not something you'd do unless absolutely necessary for example one of the modules has cells below 2v. You wouldn't...
All EV's carry out "top balancing" at the end of a full charge but it can only cope with a very limited range of differential. The MG's are no different. @coulombs advice on how to do it is on target. Allow yourself a week.
Ray
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