This charger works but will only charge a 51V lithium battery to about 80%. I don't know if anyone can resolve that. Perhaps a dealer could buy it and rehab it. I hate to throw it away, but my golfing pattern is such that I need to drive a distance to get to and from the course, and I don't want to come up short on power. Did that once a few years ago (on a different cart), and it's not fun being stranded with a dead lithium battery. So, I'll give it a try here and will toss it if no buyers. Probably worth $100 as is, and $300 if repaired.