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Live Aboard Sailboat Powerwall 14s200p
#11
Sounds like a nice idea mate. Don't think you will have any problem powering a motor, a smaller one.

Looking forward for more details
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#12
I would not use stainless steel as lugs. I understand the desire to use corrosion-resistant materials, but stainless has low conductivity. Use nickel-plated copper, and then after a solid connection is made (crimped, and possibly hermetically sealed with solder), coat the connection with some type of di-electric silicone-based goop. 

Even using vaseline is better than nothing. Salty air is the worst corrosive agent.
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#13
(12-14-2018, 12:12 AM)spinningmagnets Wrote: I would not use stainless steel as lugs. I understand the desire to use corrosion-resistant materials, but stainless has low conductivity. Use nickel-plated copper, and then after a solid connection is made (crimped, and possibly hermetically sealed with solder), coat the connection with some type of di-electric silicone-based goop. 

Even using vaseline is better than nothing. Salty air is the worst corrosive agent.

Sounds very logical. And the packs will have nickel strips, nickel plated copper busbars, and nickel plated copper wire. There's no good reason to introduce a dissimilar metal to the system when I can just use nickel plated copper lugs.

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Not much to update, I shut down the whole project for December as I was out of country. And most of the progress in January has been the regular cracking packs and testing the cells.

I did go back and check the voltage of the first 600 cells I tested. They have been sitting around for a few months now and had time to discharge if they were slow leakers. I found only 5 below 4.10v. And those 5 were all above 3.9v. They are probably fine but they were all the questionable red sanyos so I pulled them from the good stock. I want as few sub-optimal cells in the system as possible cause I do not want to be doing monthly repairs on this system.
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