Intermittent crank

Starmanut said:

Just today mine would not start first time. I think the battery is just old. Bought the bike it in June 2017, I think the dealer said it was a new battery, but it probably sat on the floor for 3 or four month, too.
Second time I tried it started, but the fuel gauge did not come to life until I traveled about half a mile. I didn't dare stop anywhere in case it would not start again. It has seemed a bit weak for the last month or two and I usually keep it on a charger. It always starts when I take it off.
Any suggestions on a good battery? What is the life on a rocket? Seems I had to get a new battery on my Kawasaki 1500 about every 3 years or so, but the rocket batteries are bigger.

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