Hi, I'm looking into using an old Samsung Lithium battery from an old cellphone to power my Arduino Uno. The battery is rated at 3.7V, 1000mA. I've got 2 questions 1. Charging the battery I've purchased the following 1A Lithium Battery Charging Board [image] 2PCS 5V Mini USB 1A Lithium …

Using an old lithium battery to power my Arduino

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