05 klr 250 (battery won't stay charged) - Kawasaki KLR 650 Forum
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post #1 of 16 Old 10-14-2013, 12:04 PM Thread Starter
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05 klr 250 (battery won't stay charged)

Hello. I am new to this forum looking forward to all the knowledge that is out there i know a little bit but not a whole lot. I recently purchased an 05 klr 250. it was sitting in pieces when i bought it. I got it all back together and put a new battery in. I let the battery fully charge overnight. When i try to start the bike with a charged battery it fires right up. Then i take it for a ride and after about 5 minutes the battery is dead and it will not start up. I am thinking the magneto is bad but i don't want to just go buying things with out knowing it will fix the problem. Any ideas?
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post #2 of 16 Old 10-14-2013, 04:08 PM
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Were in your shoes, Mauryo, I would take the battery to an auto parts store or tire/battery place and they will load test it for you free of charge. Most will do it free, anyway. I would rule out a faulty battery before checking anything else. It's not unheard-of to buy a brand-new battery that has some kind of problem. Voltage at the terminals read by a multimeter is only part of the story.

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post #3 of 16 Old 10-14-2013, 04:32 PM Thread Starter
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not the battery

Quote:
Originally Posted by planalp View Post
Were in your shoes, Mauryo, I would take the battery to an auto parts store or tire/battery place and they will load test it for you free of charge. Most will do it free, anyway. I would rule out a faulty battery before checking anything else. It's not unheard-of to buy a brand-new battery that has some kind of problem. Voltage at the terminals read by a multimeter is only part of the story.

Welcome to the forum.
planalp. Took the battery to auto zone they load tested it and it was all good.
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post #4 of 16 Old 10-14-2013, 05:21 PM
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Quote:
Originally Posted by Mauryo View Post
planalp. Took the battery to auto zone they load tested it and it was all good.
Good to hear you ruled that out. Unfortunately, I'll be of no further use to you because my knowledge of electrical systems is pretty much nil. I'm sure somebody else will step in and help you out. Good luck with it!



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post #5 of 16 Old 10-14-2013, 07:03 PM Thread Starter
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lol. thanks. i just ordered a magneto/stator w/e you want to call it. hopefully that fixes it.
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post #6 of 16 Old 10-14-2013, 10:54 PM
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Could be the stator, or the rectifier/regulator, or a short-circuit in your wiring.

The voltage produced at various rpm would be an interesting indication of your electrical charging/storage system health. Also, continuity between the positive battery connection (disconnected from the battery terminal post) and ground, with the ignition key OFF (measured with an ohm-meter).

Fortunately, it runs! The ignition circuit is powered by the exciter coil of the stator; no involvement with the battery circuit. Starting and running remain independent of battery condition.

-----------------------

Where ARE my manners? Welcome to the forum, Mauryo; KLR250s FOREVER!

Last edited by Damocles; 10-14-2013 at 10:56 PM.
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post #7 of 16 Old 10-17-2013, 10:03 PM Thread Starter
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Quote:
Originally Posted by Damocles View Post
Could be the stator, or the rectifier/regulator, or a short-circuit in your wiring.

The voltage produced at various rpm would be an interesting indication of your electrical charging/storage system health. Also, continuity between the positive battery connection (disconnected from the battery terminal post) and ground, with the ignition key OFF (measured with an ohm-meter).

Fortunately, it runs! The ignition circuit is powered by the exciter coil of the stator; no involvement with the battery circuit. Starting and running remain independent of battery condition.

-----------------------

Where ARE my manners? Welcome to the forum, Mauryo; KLR250s FOREVER!
damocles, thanks for welcoming me. soon i will fill out my info and get more into this forum. i have been extremely busy with work. Just replaced the magneto/stator what ever people want to call it. got nothing. tried your test batterie is out of the question its a good battery. so i am noticing alot of white smoke when my bike is running(for the short time that it does). what does this indicate?
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post #8 of 16 Old 10-18-2013, 08:04 AM
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The test (continuity between positive battery cable and ground) was for a short-circuit; not for testing the battery.

If your engine runs at all, chances are your exciter coil on your stator is o.k. Power coil? Don't know if the rectifier/regulator's all right. Disconnecting the rectifier/regulator, you should measure alternating current across the power coil winding when the engine runs.
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post #9 of 16 Old 10-18-2013, 09:01 AM Thread Starter
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I will retry this test when i get out of work. So i am disconnecting the battery completely and then putting the positive lead from my ohm meter to the positive battery, and the negative to the frame? I cannot keep the bike running long enough to test anything electrical while its running.
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post #10 of 16 Old 10-18-2013, 12:27 PM
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Quote:
Originally Posted by Mauryo View Post
I will retry this test when i get out of work. So i am disconnecting the battery completely and then putting the positive lead from my ohm meter to the positive battery, and the negative to the frame? I cannot keep the bike running long enough to test anything electrical while its running.
Right; at least, it seems to me: with everything OFF, multi-meter set on OHMS, the disconnected battery positive cable and the frame should show an open circuit, as in, "infinity" resistance.

If a low-resistance connection appears, "we've got trouble, right here in River City . . ." (from, "The Music Man").
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