Using Noalox? (Hybrid Battery Reconditioning)

I just used a q-tip shined on coating of DeOxit L260D grease again. Only enough to polish the mating surfaces and not enough, so to remove my paranoia of melting traces of conductive grease that flow into a P0AA6 DTC. Figure is conductive and will see in the long run what the difference is. Feels like dialectical grease in this situation as well.

 

It is advertised as increasing conductance by removing corrosion. They also say that it does not itself conduct. I find it to be a peculiar product since its properties work in both directions with respect to conductance. I wouldn't use it. I have a suspicion that the DeOxit grease "works" by being extruded from the contact zone so that the microscopic rough texture of the metal can make electrical contacts. Clean off the metal with something that can be fully removed and then screw everything together and then maybe problems from a slightly too thick layer of grease here or there will never arise.

 

The cause must first be sorted, before anything will work to stop the corrosion and the wicking up the wires and damaging the BMS (battery computer in Prius terms). The pressure release valves in the modules get themselves glued in place and won't release the built up pressure at the required 80psi. This causes the seals around the terminals to leak .... it might have been smarter to put the terminals on top, so they weren't in the liquid, but once the liquid comes into contact with oxygen and copper, the corrosion occurs.

I've tried Alminox, which is a similar product, and once the pressure problem is sorted, they corrosion stops being an issue ...... I've also experimented with electrolytic nickel coating with some success, but again, only after the pressure problem is sorted.

T1 Terry

 

Not sure how to get the image to appear, but it can be seen the negative end terminal is affected more than the positive end (think I have that the right way around, forgive me if I've got it back to front, I'm no where near my NiMh sample modules at the moment) Has anyone tried wiring the voltage sensing wire tab to the other terminal to see if that improves the BMS faults occuring?

T1 Terry

EDIT: If you enlarge the photo of the busbar with the corrosion on it, look at the end with the most corrosion and smallest copper patch exposed .... does that look like arc pitting to you?