How good are Pound World power banks?

This is a slightly different version of the video segment I did on the Ashens channel https://www.youtube.com/watch?v=uf3Cb3UB5hc as it is geared more towards technical people and leaves the lithium battery information out. It's notable that this is the first time I've realised that Superchip actually do this awesome little power bank controller that fixes my main issue with the older style power banks. Namely disconnecting the battery completely at the low voltage cut off point like a DW01 and MOSFET combo.

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