I left my key in my Sportscooter on all night. Only the tail light was on. more than 24 hours i think. I plugged in a battery tender (dont know the amps), in for 2 days and the battery hasnt charged and the Sportscooter doesnt turn over.. but i can still kick start it. When its ideling the tail light doesnt even come on!! And after a 15 min ride at full throttle didnt even charge the battery what so ever. Did i kill the battery? Im going to try charging the battery with another type of charger rated at 1.5amps.