Think your issure is that battery was designed for a UPS, not as a power soure are a starter. I tried batteries from a battery store, not good results. The price is great. Able to start your engine, questionable. Wasn’t designed to be rattled around in a kart. Very short life cycle. Comet lists an orginal replacement battery. It will only be heavier on your wallet. But it will turn over you engine and it will last.
LAD Specialties customer / tony kart / rotax / kt100
I think you have a bad battery or a poor connection somewhere in the system. I have a 7 amp hour version and it works just fine on my leopard even after months inbetween sessions as long as I disconnect the battery during storage.
I have had good luck with ups batteries when the Leopard charging system is maintaining 13+V. If it drops below 12.5v battery life suffers. Double check charging voltage before replacing. <span style=”color: #333333;”><span style=”background-color: rgba(255, 255, 255, 0);”>