Does anyone know of a USB battery bank that does not shut off when the current draw is too low?...So that brings me back to my original question of does anyone know of a particular brand that doesn't have the protection circuitry?
This thread of Nick Gammon has me thinking about capacitors, specifically supercaps although the one in his example is a normal one I think.A 1F supercap like this is less than 20mm diameter. Could that play a part in your solution?
What is Always On Mode?Always On means that the output of the battery or power bank does not shut off after a set amount of time. It stays on.When shipped, most of our batteries are in Auto Off Mode. [...]However, there are times when you want to prevent the battery or power bank from shutting off when there is little to no power draw. With an Always On battery, you could power GPS tracking devices, perform time-lapse photography with GoPro and other cameras, or run Arduinos and Raspberry Pis. Essentially, if you want to power a device over several days, weeks, or months without human intervention, then the Always-On Mode is a good fit.
Unfortunately, the other thread didn't answer the question either!