First let me assure you that I have no delusions about the performance and utility of these personal "solar" charging banks. Testing this device was just to prove a point: these puny solar panels are just a sales gimmick or a worst case scenario at best. I bought this device as a handy portable backup for my phone when traveling.
And don't worry, I have full sized portable solar panels, solar generator, and gas generator when the time comes.
I did a full-drain test on it first to see how long it would take to fully recharge itself in a South-facing window:
30 days: https://youtu.be/AxATFeDNvoU
60 days: https://youtu.be/2204hH6yMI8
100 days: https://youtu.be/i1Ky2U4slBw
Full charge 135 days: https://youtu.be/57Shmo1gKa0
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