1995 Mercury Marquis Battery loses its power

1995 MERCURY MARQUIS
300,000 MILES • V8 • 2WD • AUTOMATIC
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M_A_MUQTADIR
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I bought this car recently and after a few days car doesn't start. battery was down. So I thought may be problem is with battery. So I recharge my battery and and car would start fine. But after a couple of days again I got the same problem. Auto Electrician says that dynamo is good and when he checked the battery while engine is on, it shows that battery is charging. But again after I drive for 1-2 days, battery will go down. So I changed it. But still same problem. Please advice.
May 28, 2008 at 2:53 AM
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RASMATAZ
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You have an excessive parastic drain meaning a short circuit in the electrical system draining the battery see below


https://www.2carpros.com/forum/automotive_pictures/12900_parastic_draw_1_10.jpg

May 28, 2008 at 5:48 AM