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Old 07-07-2013, 08:40 AM   #6
oldkid   oldkid is offline
 
Join Date: Mar 2013
Location: Tennessee
Posts: 35
You have to check the battery voltage under load. A fully charged battery should 12.8 volts when charged and only drop down to 11.5 when cranking. A bad battery can show over 12 volts when not under load and drop to almost nothing when cranking.
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