The Poweradd battery has greatly simplified my life. I loose the 4-5 times cargo capacity is now always present - and it is always with you - and can even upload 2 devices simultaneously. The battery recharges quickly and gives the nergy quickly back. Especially the rapid charger is very cool.
The only minor drawback is that after six months use of the USB ports is somewhat loose and no longer uses the USB cable properly. But I have to say that I attach the cable of my jacket to the phone at the wheel and thus actively ride my bike. Therefore, this problem is probably caused by my use, because the cable is moved by the movement, in the version back and forth.
Bin otherwise very satisfied, also like the chic design and have even bought some for friends.