pass through

From what I've read in the different threads Zendure seem to make the best "pass through" power banks, the problem I have is... I prefer not to buy products "Made in China" I'd prefer to support jobs in North America or Europe but I'm having a problem finding a power bank that is equal to, or...

So I've been looking at supercaps and powerbanks and USB UPS systems and reading a lot of stuff on here and had wondered why nobody seems to have linked to something like this yet. It allows you move the battery out of your camera and into somewhere in your car that is likely to be cooler. It...