Battery voltage test.

bugbog101 · Jan 3, 2010

Hiya all....
Tested my batteries on my Disco this afternoon. Using a decent multimeter one tested at 12.7 volts - OK, but the other tested at 36 volts?
Any ideas way that should be.
Cheers.

gegs88 · Jan 3, 2010

disconnect the battery and try it again, summat not right there, your alternator should only pu out 14.7v max

discool · Jan 3, 2010

Not impossable, each cell is only 2.2 volts but could handle 6 may-be if charged at that very high voltage then it would boil dry

GRATCH · Jan 3, 2010

how about 3 batteries wired up in series?

Pikey · Jan 3, 2010

bugbog101 said:
Hiya all....
Tested my batteries on my Disco this afternoon. Using a decent multimeter one tested at 12.7 volts - OK, but the other tested at 36 volts?
Any ideas way that should be.
Cheers.

Are you sure it wasn't 3.6V if it's 36 you're alternator is fooked and there's a good chance ya battery could explode in ya face.

diver · Jan 3, 2010

12V alternator would be hard pressed to put out 36V. Had a regulator fail on a Frontera a and it was putting out about 18V which over about 15 miles trashed the battery completely. Bear in mind, the difference between a 12V and 24V alternator isn't just the regulator.
Must be a measurement problem.

wiltshire landyman · Jan 3, 2010

36v fook me you better run away from that battery a bit quick..summit aint right there

Battery voltage test.

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