The concept is quite simple: a charging device that is small enough to fit into a wallet or purse, and is not a cord. And, they nailed it.
The card is roughly the size of a common credit or debit card, with the ability to easily connect into the micro-USB slot on your Android phone or tablet.
At first, I’d hope the device was another, smaller, portable battery like this one or this one, and I couldn’t imagine any reason someone would want one. Then, I went travelling and had to unravel my mess of power cords just to reach my phone charger. I could have saved a lot of time just by plugging in the ChargeCard. Also, this is a great device in situations where outlets are few, but USBs are a plenty.
My only complaint, and it’s a big one, is that the connection from the card to the USB isn’t that long (about 2.5 inches), which makes USB charging at a desktop or wall outlet inconvenient. Okay, so that doesn’t not justify purchasing one ($25). I’m also mildly concerned about the durability of the card, especially when nestled up to my fat rump. In a pinch, the ChargeCard is a worthwhile tech purchase.
For being totally awesome and “Made in the USA,” I give the ChargeCard 4.5 of 5 stars.