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Post by skingdog on May 21, 2010 16:36:22 GMT -5
i charged my battery up on my gilera stalker 2004 as soon as i bought it and it started fine, seemed to run fine, yet the lights soon dimmed and the indictors also. when i stop and switch it off to go to work and then come back 8 hrs later the battery is almost dead! it kicks over ok. wot would be the problem? please help as i have its MOT on monday. cheers!
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Post by felliott on May 21, 2010 17:41:00 GMT -5
If your scooter is charging, I say bad battery.
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Post by riceburner on May 21, 2010 19:27:58 GMT -5
If your 2004 Stalker has the original battery then you're already on borrowed time. I just bought a replacement battery for my 2008 scoot at Walmart. $50 after returning the old battery and getting the $9 core charge back.
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Post by danjdt on May 22, 2010 6:31:20 GMT -5
I am assuming mopeds have stators. I am not sure but you should have 12v sitting. and like 13 running. But thats just a guess. I am use to bigger bikes.
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Post by skingdog on May 22, 2010 11:23:25 GMT -5
i bought a new battery and charged it a it did the same:-(
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Post by thecableguy on May 22, 2010 13:07:03 GMT -5
Something must be draining it while it's off if you can charge it and it's dead after 8 hours of being parked. Does the scooter have an alarm? I don't have one but I hear that they are notorious for draining batteries.
If you have or can borrow a meter, check the voltage at the battery. Like Dan says, you should have 12v or so with the scooter off and something over 13 with it running. More when it's revving higher, like 14.5v. If it stays at 12v you aren't charging.
See if you can do some testing and let us know how it goes!
Jim
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Post by danjdt on May 22, 2010 14:45:19 GMT -5
thecableguy. Who you kiddin. We all know your name is really Chip Douglas! :-) haha
Can he use a contunity tester? With bike off and everything. If its got a drain then it will beep right? Just another idea....
Check the charging system. Could just not be charging. Shoot. There is one street bike that when the stator goes bad. It ignites the oil inside the crank case. And blows out the head gasket! Talk about design flaw!!!! But lets hope yours is an easy fix.
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Post by riceburner on May 22, 2010 15:42:40 GMT -5
There's only a few ways to go here...
1. An alarm could be draining the battery. He didn't say if he has an alarm.
2. If a new charged battery did the same thing then either the cdi/voltage regulator isn't charging the battery and he has already been given steps to check that or possibly the scooter's lights are staying on after it's turned off indicating a bad ignition switch.
My money's on the voltage regulator...
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Post by skingdog on May 22, 2010 17:29:27 GMT -5
it's a proper nightmare, i'll try the tester i think. the bike doesn't have an alarm. went to work on it today and disconnected the battery when i got there, it then started fine after work when reconnected. the lights don't stay on after switching the ignition off. can't find anyone within a 40 mile radius of where i live to look at the electrics for me, one comment from a mechanic was "they're a pain in the ass and an unknown entity!" could the problem be the regulator rectifer? what does that contraption do exactly?
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Post by skingdog on May 22, 2010 17:32:53 GMT -5
and what are reeds and what do they do? thanks
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Post by thecableguy on May 22, 2010 20:20:22 GMT -5
Got to find what's drawing on the battery when the key is off. If you can hook up an ammeter inline with the battery you'll see the discharge. You then have to go around the wiring harness and start disconnecting things one by one until the discharge stops. Then figure out what's wrong with what you unplugged.
A continuity tester will work but you gotta disconnect the battery first. Hook the continuity tester across the battery + and - wires and do what I said above to make it stop beeping...
It's not that difficult but you do have to put your thinking cap on.
danjdt, remember that "Free cable is the ultimate aphrodisiac"...
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Post by danjdt on May 23, 2010 1:37:33 GMT -5
If only you could type with a lisp and it would been perfect! haha. I am just confused to what would keep drawing power on this bike. I think he stator is not working properly. Or a short. But Leaning more towards a poor stator. Or shorted stator.
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Post by nick4u1 on Jan 31, 2011 9:47:02 GMT -5
Some real useful info here actually
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Post by tomcas on Jan 31, 2011 10:30:15 GMT -5
Either the bike is not charging or it's draining down. It seems it must be draining down because you claim when you let the bike sit with the terminal disconnected it started up fine after sitting, is this correct? The check for charging just measure battery voltage while running at high rpm. You can do this by carefully reving it on the stand. The voltage should be at least 13.5 volts at high rpm and up to 15 volts. To check for a current drain with the bike off just disconnect one of the battery terminals and insert an ammeter inline. The current should be less than 50 milliamps.
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