I bought one of the NOCO jump starters and it failed after a few jump starts. I don't recall exactly what it was doing, but it simply wouldn't turn on, even after a full charge. Fortunately someone else had a car for me to hook jumper cables up to.Forgive me, I'm a bit confused
Starter? Are you referring to a noco jump starter? Or the starter in your Jeep.
Battery in the noco was fine?
Circuitry was fine?
You replaced the noco jump starter with a Schumacher version?
Returned it and bought a Schumacher jump starter that has given me no issues.
https://www.amazon.com/dp/B07C9YRS34/?tag=wranglerorg-20
There have been no issues with my starter motors, just shoddy wiring and bad batteries.