In article ,
Onetap wrote:
What happened was that my 'flat' battery was not flat, it was open
circuit. Disconnecting the donor battery caused a voltage surge and
wrecked the alternator.

Quite. But then jump starting didn't cause the alternator to fail - it
would also have failed if the engine was started by any other method with
this faulty battery still in circuit.

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*A 'jiffy' is an actual unit of time for 1/100th of a second.

Dave Plowman London SW
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