Why your outdoorsy friend suddenly has a gummy bear power bank

Looks like a guy there measured it and it is 14.7 which is more than I thought it would be.

> So at a nominal 3.7 volts that’s around 14700mAh, which is around 73-74% efficiency. That’s fairly standard. If you perform the same tests with other batteries rated at 20k mAh, you’ll generally see a similar usable capacity.

I was thinking of getting the Haribo one because I like to camp and climb mountains, but I found an old Ravpower battery bank (RP-P819) my Mom got all of us maybe a decade ago and it is 16,750 mAh on the label and weighs 308.5g. I'm not worried about ultralight enough to make that into e-waste and get the Haribo. I guess technology hasn't changed that much with regard to battery packs. The age of the plateau continues.

Or just write it as 20 Ah (not you, the reddit poster). I suspect people have no concept of SI prefixes. They know that k = one thousand but are unaware that milli is one thousandth.