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Old 10-14-2012, 02:07 PM   #1
Bikerboy108 OP
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Question Battery Voltage Question

Put a meter on my 1200 gs battery(bike not running)and got a reading of 16.1v with the bike running 17.8 v is that possible??
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Old 10-14-2012, 02:44 PM   #2
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I was getting some pretty strange and much higher than normal readings on my BMW. Not a GS.....but they sure did not make sense. Went and got the other "and exact same" multimeter and.....back to normal. A new battery fixed the deceptive meter.
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Old 10-14-2012, 04:58 PM   #3
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put a new battery in the meter before I took the readings
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Old 10-14-2012, 05:04 PM   #4
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It is not normally possible for a 12 V battery to read over 15V when not being charged.

Do this, turn on the bike, do not start, wait one minute. . If your voltage in this condition is over 14 V then you have a meter issue.

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Old 10-14-2012, 05:05 PM   #5
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Quote:
Originally Posted by prestaino View Post
Put a meter on my 1200 gs battery(bike not running)and got a reading of 16.1v with the bike running 17.8 v is that possible??
It appears that it is possible.

OCV (open circuit voltage) for a fully charged automotive battery is ~12.7 volts.

With the engine running you should see about 14VDC, maybe a bit more depending on RPM.

Check your VOM...something isn't right.
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Old 10-14-2012, 05:28 PM   #6
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thanx will check in morning!! and report
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Old 10-14-2012, 08:41 PM   #7
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yep bad meter...Thought so
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