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Old 2015.05.07, 04:30 PM   #10
LED
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Join Date: Oct 2008
Location: Antwerp, Belgium
Posts: 520
Push the battery's hard into the positive direction with a screwdriver or something. Sometimes they are a tight fit and don't touch the positive side.
If you want to double check and have multimeter, make sure you have 4.8V over all the batteries. Then you are sure they are touching the contacts.
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