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3 Simple Ways to Light an Led Bulb with a Battery - wikiHow
Teardown: LED Bulb Yields Tiny UPS | Hackaday
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Battery and Bulb Experiment - Enjoy Teaching with Brenda Kovich
How to Make a Light Bulb Work With a Battery
Smartbulb switches to rechargeable battery in a power cut | Daily Mail Online
Smartbulb switches to rechargeable battery in a power cut | Daily Mail Online
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How to Make a Light out of Batteries: 13 Steps (with Pictures)
