Twice over the last 50 years or so, I've purchased new batteries that were bad - both in the last 5 years. Did you buy the cheapest one you could find? I've never had problems with Interstate batteries in my 123.

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Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/showthread.php?t=296386