Battery dead after torrential rain....!

I have been using my 400 almost every day here with no problems at all...and we had a torrential tropical rain storm here yesterday with almost 3" of rain in about 35 minutes. Old Faithful was sitting in the yard uncovered and this afternoon - went to start it and it cranked and then died....!!! Nada, Nothing, zilch, zero... So, I placed the battery on my Schumacher SC-10030A and 2 1/2 hours later the battery was fully charged. BTW - the Schumacher is a great tool to have (computer controlled) as i senses the size and type of battery and sets itself to charge it properly without any damage - also is a battery "tender" as well as a jumper battery.

Anyway - my question is...........Do you think the handlebar controls got so soaked from the rain that there was a significant current leakage...??????