I have a '03 GTX with only 51 hours on it. It started fine last weekend but after riding about 15 minutes the low voltage warning beeper sounded. Before we could make it back it died in the water (sucks pulling a sea doo with 50 hours on it). The battery was replaced this spring and holds a good charge when charged with my home charger. I live 2.5 hours to the nearest dealer - any suggestions of what I can check? Thanks for any suggestions.