Remember the USBCell? The very same company is now planning to take over the world by offering cellphone batteries that work on the USBCell concept. All the user needs to do is open the back cover, plug in the extendable USB plug and you’re good to go. This eliminates the hassle of carrying your cellphone charger around on your travels, saving you approximately 5cm squares’ worth of luggage space. I personally think that the company could have just come up with a USB charger cable for the cellphone, since removing the back cover of your cellphone can be quite the hassle. Not to mention, you can’t speak into the phone comfortably while it is charging.