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These lights come come in 12v and 3v both 20mA. Roughly how many lights could I run off either a 9v battery, 2 2032 batteries, or a 23a 12v battery using either
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I'm trying to get 12v from two 9v batteries. Using resistors, I managed to get the bottom battery to 3v but when I tried adding them, it resulted in 9v. What am
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voltage - Can you get 18V from two 9V batteries - Electrical Engineering Stack Exchange
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I'm trying to get 12v from two 9v batteries. Using resistors, I managed to get the bottom battery to 3v but when I tried adding them, it resulted in 9v. What am
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If you have two 9 volt batteries and add them together, will that make 18 volts? - Quora
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non-car related - how to wire 2 9V batteries parallel - ClubLexus - Lexus Forum Discussion
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