Question about 2007 Honda CBR 1000 RR Fireblade

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Brand new Battery discharged

The original 10series battery in my bike discharged for no apparent reason. I dont ever recall leaving the lights on for more than 5-10 minutes at a time. So I bought a less expensive 9series battery and within a month and a half it died as well. What could the problem be? Again I know I didnt leave my lights on. Any help would be appreciated.

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  • theoson Feb 08, 2009

    My battery has died 3 times in the past 3 months. Yesteday morning the bike started up fine, I pulled out of the garage into the driveway and turned it off to suit up in my riding gear. I came out to start up and it was dead again. Weird thing was everything was illuminated on the panel- all the indicators. It just wouldn't start up. I put the battery on the trickle charger but this time after 24 hours it's still in the red. The battery- YTZ10S is less than 2 years old. Do I just replace the battery or look deeper? Could it be the regulator? The ignition seems to be ok. Thanks.

  • megeshen Mar 27, 2009

    I have a 2007 Repsol Fireblade. Bike came back from a service...was brought back on a trailer...when i arrived at home and tried to start, battery was dead! Charged for a bit and she started the next day but the following day the battery was dead again... dont know whats happening. Any ideas?


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Hi and welcome to FixYa,

To my knowledge, the only component capable of discharging a battery over your described period of time would be a partial short, not a full short. A full short would cause heating/burning of the wires and the battery wouold go flat in a very short period of time.

Having said the above, the only components that would be the likely culprits would be:

  • regulator (most likely);
  • ignition switch (likely);
  • fusebox (least likely).
The regulator could be suffering from shorted diode(s) and/or regulator transistor while the IGN switch and/or the fuse box could have rusted/corroded terminals, connectors or internal pins.

If the above solution has merit, pls click on my "Ask Me" to explore additional options, postback how things turned up or should you need additional information.

Good luck and Thank you for using FixYa.

Posted on Dec 03, 2008

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You have a dead short somewhere,Just start tracing wires for the ignition first.

Start with the switch and work your way back.

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