Does anyone know of a USB battery bank that does not shut off when the current draw is too low?
I have a project that requires 5V and right now I am power it via my computer but I want to make it portable. I know I have lots of options (boost converters with batteries, lipo batteries with switcher to 5V, etc.) but since I already have a cut USB cable my hope was to use a simple usb battery bank but the problem is it shuts off after like 30 seconds since my load is too small. I could from reading online put a load resistor (of appropriate power rating) but that would burn through the usb bank like candy and would only last a day at most. My projects dictates that I want to be able to set my unit outside for several days so a load resistor that kills the battery in a day is not a viable solution. So that brings me back to my original question of does anyone know of a particular brand that doesn't have the protection circuitry? And if not then does anyone have any other advice or idea, all help is welcome!
Thanks in advance!