I was out for a ride and stopped for some frozen yogurt. Came back to the bike and the battery was dead. As in, turn the key, everything lights up and then slowly fades away (or immediately if I actually tried to start it). Fortunately, Walmart just across the parking lot. Walked over bought a battery, came back and installed. I do need to check the voltages now that I'm home but I need to cool off first. Lesson learned. I've been suspicious of the battery already because of its age and I should have replaced it before it left me stranded. I bought the bike used 9 months ago and I had noticed that battery was old already.