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led - How to calculate how long a 9V battery will last based on schematic? - Electrical Engineering Stack Exchange
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How to Connect Multiple LED's in Parallel with 9V Battery & Switch | DIY Simple Electric Circuit - YouTube
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My DIY RGB LED panel powered by 9V battery works but certain colors like blue, white, and purple don't work - Electrical Engineering Stack Exchange
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How to Connect Multiple LED's with 9V Battery, Switch in Series Connection | Simple Electric Circuit - YouTube
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