NEC ultra thin flexible batteries could very well be in the next credit card. Their latest version of its ORB, or organic radical battery measures a super thin 0.3mm thick.

The technology makes it outperform lithium ions, and they can be created using a special printing process and easily integrated into circuit boards during the manufacturing process. The company envisions that the latest generation of the batteries being used in electronics like flat screen displays, and flexible e-readers or even credit cards.

[NEC via Japan Tech Niche via The Verge]