Traveling in Japan over the summer, I bought a powerbank. It was useful because I was moving a lot, taking a lot of pictures with my phone, using it a lot for o

Traveling in Japan over the summer, I bought a powerbank. It was useful because I was moving a lot, taking a lot of pictures with my phone, using it a lot for other stuff without charging it. Plus I always had a 4G modem with me. However, more than 25% of the Japanese I met were using Powerbanks too. Look around you at a smoking area, in the subway,... and those numbers may confirm themselves.