Philips senior product designer Holger Hoehn, supported by Catherine Wong, has conceived a portable phone charger concept called the Power Potion 3000. The sleek power bank mimics the structure of a water bottle and is compact enough to take on the go. On the underside of the device's lid - which can be unscrewed via a metal cap - is an integrated Lightning cable.

At the bottom of the charger is a built-in USB port, which offers support for other devices, as well as an LED light indicating the charge level.

Here's hoping the Power Potion 3000 makes it into production. If not, check out the UsBidi, the world's most intelligent smartphone charger.