I have recently noticed many USB power packs, small things that you can carry around and when your cell phone runs out of battery, you insert that thing into your cell phone's USB port and get some charging done. I do not want to carry another device or charger for my phone. But I can certainly carry small USB cable that I can plug into my phone and my friend's / colleague'ss cell phone and loan some battery power (i.e. charge my phone). My laptop can charge my cell phone now, why can't another cell phone do that?

What do you think of this idea or comment?
(You can change your vote at any time)

I agree

No opinion

I disagree