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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

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    3.7V 18650 battery pack

    So I am new to this site and new to electronics. Was told this will work but want to make sure. I am trying to put 2 to 3 18650 3.7 V batteries together in parallel to a headlight/flashlight. the volts would be lower than original as it takes 3 AA batteries I do know that the amps arer different...

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