DIY Powerbank 40.000mAh 18650 QC4.0 Dual USB 5V 4.5A 22.5W
A case for a power bank control board that fits 17x 18650 cells. You will need these parts: 1x power bank control board - you can buy it on Aliexpress The module is great, with 2 USB outputs, 1x USB-C input/output with fast charging, 1x…
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