That would be my guess. I normally get 3 years on flasher batteries. After that I replace it and use it for the LED lights. 

Lol, pulling over an old bigger sled motor was like kick starting a old Harley! 😆

Last nites supper. Oven baked beef roast with all the goodies.

100% for sure muley.   We had one at our farm one year in Polk County just north of you.  It was they're for a few months,  then disappeared.   Also,  I saw 3 muley bucks this past October about 50 miles west of Clay County. 

my first sled was a 69 ski-doo nordic 371. my uncle had a elan, and we always wanted to ride that, because his other sled was a TNT, and that single cylinder we could not pull start it. it had so much compression, if you did not pull it fully, it would darn near pull your arm off.😬

I think I know the answer, but . . . After running for about 3 hours the output on my flasher battery dropped from 12.5v to 10.1v. Pretty much means it's dead, correct?

I think I know the answer, but . . . After running for about 3 hours the output on my flasher battery dropped from 12.5v to 10.1v. Pretty much means it's dead, correct?

This was new years .

Haven't been out in a couple weeks this was 3 guys dec 19 time frame northern Minnesota.