2013 EnerSys Genesis NP18-12B KOP Battery/FIRST Choice Weak?

[AhAhPatel]

Originally Posted by RyanN

Over the years, Team Fusion has received a few defective EnerSys Genesis batteries. Enough defective ones that we don't even consider using them now.

By defective, I mean the internal resistance is too high to run a motor. They read a good voltage powering the cRIO and other small loads, but as soon as a heavy load is applied, our robot would reset.

Our number's aren't that high though. Maybe 3 or so defective ones? We also had problems with them splitting open on year, while the MK batteries seemed to not split open at all. (2010, side mounted cradle... it was a bad design).

Are we required to use the batteries in the KOP or are there other options?