Just some info i want to share with Jet Boat owners. My Sportster kept cutting out after running for a few minutes. I had Intermittent problems with the DESS cap. Sometimes it would beep, sometimes nothing. Dealer told me to replace Cap and post. Before i did this, my nephew told me to fully charge the battery. Not had a problem since. Installed a $10 solar panel to keep the charge up. Hope this helps any pne with a similar problem