I have 4 years and over 30k miles on my pack and have similar experience to David N. I used noalox on the aluminum terminals like David, very thin coating right after sanding with fine emery and wiping them clean. I have minibms module terminals over the lugs, then flat washer and lock washer - the hardware that came with the cells. I used 10 - 12 ft-lb torque on the M8 bolts. I have checked the terminals about every 6 to 12 months with a torque wrench. The only time I found a loose connection was when I replaced a cell and forgot to fully tighten the nut, which I first detected with a bit larger than normal pack voltage sag, then with a cell log8 showing large voltage sag on that cell. I was stunned when I found I had not even finger tightened the nut! Otherwise, none have required tightening. They don't budge when I apply 10-12 ft-lb. It is possible that the nut wasn't fully tightened originally - maybe snugged with a wrench, then missed the final torque.
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