So like most weekends on the river, I often fly my 2+ as we float and boat. I have done it all summer long. This passed Saturday though was the last time. I turned everything on as I always had. I was showing 93% battery. Took off and within 30 seconds my iPad was honking for low battery. I looked and it was showing 13% and the return to home pop-up was counting down to take over. I selected cancel and began to fly straight to me. 3-5 seconds later, about 30' in the air, it shut down and splashed into the river. For the record, they sure don't float for long! Never to be seen again.. Now I know that this is a risk of flying over water but would I just chalk this up to a bad battery? Any ideas? I've been flying for 2 years now and have never had an incident such as this. I have already ordered a new P3 and hope to have it by the end of the week.