Hi, I want to power my Arduino setup with 18650 batteries. First, I thought about use a pre-built "power bank" like this : https://www.aliexpress.com/item/Portable-USB-Charger-5V-2A-18650-Power-Bank-Battery-Box-For-iphone6-Smartphone/32837720204.html But by looking on the net, I've found that th…

Power an Arduino with some 18650 batteries

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