battery drain

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rexeriot
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battery drain

Post by rexeriot »

All of a sudden my battery was flat. Only had bike for 6 weeks but have not had an issue. Jumped the bike with a battery pack. Went for a ride. stopped the bike. Restarted fine so battery was now charged. Left it for a week and the same thing happened. Something is obviously dining the battery. Th e only thing I've done prior to it happening the first time was to remove the fairing for painting. Have I disturbed something and created a short. I'm a very competent amateur mechanic but electrics have always been a challenge for me. Any ideas guys? Also as soon as I turn on the ignition the fuel pump starts wurring. Is that normal? Apart from that the bike is a beast. Runs like a dream and has only done 20k. Oh by the way she's an 89 r model. Thanks.
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Stig
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Post by Stig »

You dont mention if theres an alarm fitted...assuming not, battery may be at the end of its life. If you have access to a multimeter put a drop test to see if its using currrent when turned off plus you can also check to see if the alternator is Ok battery should be putting out around 14V
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skyerae
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Post by skyerae »

The wurring is normal, it is the fuel pump priming the system, it should stop in a few seconds if you leave the ignition switched on without starting the bike. I had an alarm fitted and it killed my first battery before it shorted and blew up my electrics. I had to eventually cut it out and splice together the electrics to make it work.
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darthzuasive
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Not sure

Post by darthzuasive »

It's possible that you exposed a wire somewhere and are shorting out but I would think there would be heat as a result. I'm by no means an expert.

Might not be a bad idea to check the voltage on your stator. I'm not sure of the specs but when running, it should be putting more out to recharge. Something like 13/14 volts. It could end up being the rectifier. You'd be surprised how long the bike can go on just a small charge. I used to have an 89 CBR600R that was terrible with electronics. They used these nasty shunt regulators that burn up so bad.
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