Didnt understand the first part, but under load (like when starting) voltage will drop a bit, usually a few volts.
If its showing around 14v with engine running and lights on, everything should be okay in the charging system.
Cheap and old batteries often have low crankingpower, eventhough the capacity (sustained draw on the battery) is still there.
Last edited by Jens Eskildsen; 19 Nov 2014 at 09:08.
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