How do I determine if a 9V battery is good, weak, or bad using the battery test function?
Set the function switch to the 9V BAT position and connect the test leads to the battery. A reading above 8.2V indicates a good battery, 7.2V to 8.2V indicates a weak battery, and below 7.2V indicates a bad battery. (Page 15)
From the official Craftsman 82141 manual, page 15
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