New Rider
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Posts: 2
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Joined: Feb 10, 2016 17:44:28 GMT -5
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Post by freeman04 on Feb 10, 2016 17:55:28 GMT -5
the following problem occurs on my Roketa 250 MB:
the bike is somehow draining the battery over night. I bought a new battery and charged it. Has 13.5 V and the bike starts fine. With the bike idling I measure 13.9 V so the alternator is fine. After stopping the engine battery has 13.5 V, an hour later 12.9 and next morning down to 9.3
any ideas ?
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Post by tortoise on Feb 10, 2016 18:09:40 GMT -5
Connect multi-meter in series with the battery . . start with disconnecting voltage regulator first (one-way diode function may be deficient).
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Post by dollartwentyfive on Feb 10, 2016 23:16:57 GMT -5
some bikes have the one way diode, some don't.there are a few things that can cause this: 1. defective diode. 2. defective regulator. 3. defective ignition switch. 4. defective battery.
in all but one of the above cases there will be some king of ground involved, the only exception is the bad battery.
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