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Old July 23rd, 2009, 03:48 PM   #12
Alex dude
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Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008

Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE, '15 CRF110F, '13 TT-R50E

Posts: Too much.
Blog Entries: 7
Yup, idling will actually drain these batteries. The bike needs to be moving (engine at 4k+ rpm) for there to be any extra juice to be able to charge the battery on top of dealing with the immediate electrical needs of the bike.

I'm a little surprised that 35 miles of riding wasn't enough to get the battery back in shape enough to start the bike at the end of the day, but I guess if it's completely dead, that's just not enough. You're absolutely right, the tender is the way to go.
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