Hands on review: Micro USB Charge card
From Mobile Syrup:

Funded on Kickstarter, the ChargeCard project raised more than three times its $50,000 goal, catching the dual wave of Kickstarter and simple smartphone accessories. At its core, ChargeCard is a simple Micro USB charger in the shape of a business or credit card. One side has a non-removable micro plug and in the middle, held relatively tightly with clips, is a tractable USB 2.0 plug.
When ChargeCard is stowed away, it fits easily into a wallet or bag. It may not be the first charging cable you turn to, but it’s fantastic for use in a pinch when you’re near a computer or a USB-based charging outlet.

Hands on review: Micro USB Charge card

From Mobile Syrup:

Funded on Kickstarter, the ChargeCard project raised more than three times its $50,000 goal, catching the dual wave of Kickstarter and simple smartphone accessories. At its core, ChargeCard is a simple Micro USB charger in the shape of a business or credit card. One side has a non-removable micro plug and in the middle, held relatively tightly with clips, is a tractable USB 2.0 plug.

When ChargeCard is stowed away, it fits easily into a wallet or bag. It may not be the first charging cable you turn to, but it’s fantastic for use in a pinch when you’re near a computer or a USB-based charging outlet.