Unfortunately, too large to be still small

I have the power pack always as a reserve in my backpack. Although my smartphone normally loose survived a day there are sometimes situations where my battery is suddenly empty. And in exactly where my Powerpack starting and saved to the ass. But that would be with any other Power Banks so.

Actually, I've got the Power Pack because I wanted to attach it to my keychain. The principle is but I imagined the device is much smaller and therefore it is now in the backpack. For your key ring, it is definitely too big.

The key-Find function, I do not need (especially because the pack not attached to the key).

The problem is that these two special features (which I can not use or do not use) make all the difference to normal power Banks and but rather to raise the price. For if I have that thing anyway in my backpack, I can also have a Power Bank is slightly larger for less money and for the 10 times the capacity has to buy. So unfortunately Conceptually beside something. Who but a small (but unfortunately for the keychain too large) needs Power Bank can already access.