DIY 18650 Battery Banks, do they deliver? Testing Power Delivery with USB-C and Lightning.
These DIY Battery Bank kits from eBay hold 16x 18650 cells and offer a ton of power input and output options. In this video I test power flows with the USB-C and Apple Lightning ports to find out how well they support USB Power Delivery. Here's the meter I use: https://amzn.to/3W4qnbI
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