Electrical help plz? - SV650.org

21-07-05, 08:47 AM

My sv400s and i went on a nice long ride 100km or so, had to bump start her 3 times as batery went on me! So got her home triccle chargered her battery till it was full, took off charger and volts were 12.59 so happy with that. 48 hours later and i get a reading of 12.73volts, so happy again. So im guessing my thingy that chrages battery has gone(altinator/recitfier/regulator dont know what does what if anyone wants to explain?)gd assumtion? or is it my battery thats fried?

Bike spent over 3 years stood still never used so this will be what caused whatever the problem is if anyone wants to solve it?

Cheers

Sheldon

johnnyrod · 21-07-05, 11:38 AM

Put the voltmeter across the battery and start it up, the reading shoudl rise from around 12V (off) to 13-15V (running, off idle), if you still get 12-13V then the charging system isn't.

If you get 13-15V then it could be the battery is a bit tired, they can die when left to stand for a long time, so you might as well get a new one as try to persuade it to retain some charge - generally a losing battle.

If the charging system looks suspect, you need to figure out if it's the alternator, regualtor/rectifier module, or both that have gone. I think there are test in the manual, otherwise check this out:

http://www.bikeguru.fsnet.co.uk/alternator.html

21-07-05, 08:47 AM	#1
Bikerz Guest Posts: n/a	Electrical help plz? My sv400s and i went on a nice long ride 100km or so, had to bump start her 3 times as batery went on me! So got her home triccle chargered her battery till it was full, took off charger and volts were 12.59 so happy with that. 48 hours later and i get a reading of 12.73volts, so happy again. So im guessing my thingy that chrages battery has gone(altinator/recitfier/regulator dont know what does what if anyone wants to explain?)gd assumtion? or is it my battery thats fried? Bike spent over 3 years stood still never used so this will be what caused whatever the problem is if anyone wants to solve it? Cheers Sheldon

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21-07-05, 11:38 AM	#2
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,122	Put the voltmeter across the battery and start it up, the reading shoudl rise from around 12V (off) to 13-15V (running, off idle), if you still get 12-13V then the charging system isn't. If you get 13-15V then it could be the battery is a bit tired, they can die when left to stand for a long time, so you might as well get a new one as try to persuade it to retain some charge - generally a losing battle. If the charging system looks suspect, you need to figure out if it's the alternator, regualtor/rectifier module, or both that have gone. I think there are test in the manual, otherwise check this out: http://www.bikeguru.fsnet.co.uk/alternator.html