Portable rechargeable battery pack with state-of-charge meter and can be charged while in use?
I've been looking about for something like this, and have yet to find something that will work for my needs. I plan to break ground on a portable Raspberry Pi system, and will need a battery system for it. I've seen a few others around (both RPi portables and battery packs) but I would love to be able to make a battery pack that I can charge while the battery pack is being used, along with add some form of meter to know how much charge I have left.
Any and all help is greatly appreciated!