Question about 1994 Honda CBR 900 RR Fireblade

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Hi, Just bought a 1994 CBRR 900 last week. Battery was poor, tested it and verdict was sulphating. Therefore i replaced it, went for a 5 hour ride yesterday and had the lights on all the time, did over 200 miles. Bike died while riding and would not start as the the new battery was dead. Charged it up and the bike started 1st time and brought it home. I am just wondering if I should not have the lights on for extended periods of time or if there could be a problem with this bike? Many thanks in advance for taking the time to read this message Kind Regards John

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It sounds like a problem with the charging circuit. You should be able to ride with your lights on!
The first thing to do is put a multimeter set to DC Volts across the battery with the engine running. Are you seeing more than 13.5 volts? If not there is a charging problem. It could be the regulator/rectifier or the stator windings, or just loose electrical connections if you are very lucky. I have a manual for the 900 Fireblade (I used to have a 98 Blade) so let me know if you need anymore help.

Posted on Sep 12, 2010

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