DIY Powerbank for 4x18650
thingiverse
Simple DIY power bank project requires four high-drain lithium-ion batteries, specifically the 18650 type. These can be easily sourced from old laptop battery packs or purchased online from retailers such as eBay or AliExpress. Additionally, a charging module is necessary for this project; I used a 5-volt, 2.1-amp unit that supports fast charging capabilities. To assemble the power bank, batteries and the module are secured together using electrical tape.
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