Cushman Titan 36 volt update

[Legacyfarmer]

I made a discovery while attempting to diagnose a weak cart. Previous owner had spliced a battery cable by placing 2 side by side, and taping them together. This particular cable ran through a slot in the frame and could not be seen where the splice took place. I replaced it and the cart runs better now. It is still not 100% With 3 12 volt ups batteries at 134.9 amp/hr each, I have 12.4 volts individually. I have a pack voltage of 37.7, and it goes down to 35.6 when I hold the brake and step on the gas. I plan to replace the 12 volts, but wonder if they are affecting my torque and speed.