PowerSkin offers penny deal on external battery for iPhone 4, 5, and Android

Want an inexpensive external battery for your iPhone 4 or 5? There's a great deal you should know about that's running this weekend only.

Battery case maker PowerSkin is offering a special one cent deal this weekend on their PoP'n, an external battery case that works with some iPhones and Android phones. The deal is open to anyone in the U.S. and saves you about $48. You'll still pay $10 for flat-rate shipping, but even then it's a pretty solid bargain, especially if you're looking to get more life out of your smartphone.

The PoP'n charger sports a 2000 mAh battery that should improve your battery run time about 70 percent, according to the manufacturer. The battery sticks to the back of your smartphone using soft rubber suction cups. It connects to your iPhone's charging port (or the Micro USB port on your Android smartphone) using a specially designed custom tip. Separate versions of the tip are available for iPhone 4 and 4S (equipped with a 30-pin Dock connector), iPhone 5, 5S and 5C (equipped with a Lightning connector) and for HTC, Samsung, Sony and Motorola smartphones.

The battery sports a blue LED meter to show you how much juice it has left. It comes in black, white, red or pink.

The original PoP'n works with the iPhone 4, 4S, 5, 5S and 5C. PowerSkin has developed a separate battery to work with the iPhone 6 and 6 Plus, but that's not part of this promotion.

Just enter "PENNY" or "ONECENT" in the coupon code field when you checkout to get the special price. PowerSkin's bargain on the PoP'n 1 runs through the weekend, so make sure to get it while it's available.