battery pack charger

I think some people use more expensive "External Battery Chargers" made by Mophie which can cost over $100 per battery pack as a status symbol like how people buy Apple iPhones to showoff to people that the buyer of the battery pack can afford a more expensive external battery pack charger made...

I think battery pack chargers are more useful because they can charge a tablet, MP3 Player, some handheld game consoles, and other devices which charge by USB. Some bigger battery pack chargers can even charge a laptop like the Apple Macbook which uses USB-C to charge. I can also re-use battery...