I am hoping to buy some cheap lithium ion batteries to power a handful of Pro Micro boards. I have found these beasts on line and have a few questions that some of you hardware boys will be able to answer or at least give me the right questions to ask the supplier.
The battery comes with overload protection. Can I hook the +ve and -ve batteries straight up to the 5V from a USB port?
Most of the batteries are 3.7V whereas the pro micro and the RGB LEDs (a string of 5050 RGB WS2812B) I want to power off it are 5V. Will these work at 3.7V or should I be looking for a battery with a higher voltage? I know this sounds like a dumb question, but I know the effective operating range for WS2812B is supposedly 3.3 to 5V.