Yesterday, I reviewed PowerSkin’s Spare, a semi-protective battery case designed specifically for the iPhone 6. While Spare didn’t strike me as a great value for its asking price, PowerSkin also sells a more powerful alternative called PoP’n 3 that can work with multiple iPhones, including the iPhone 6, iPhone 6 Plus, and earlier iPhone 5 models. And despite having nearly twice as much power as Spare — enough power to fully recharge any iPhone — it sells for only $50-$55, depending on the color you prefer.

PoP’n 3 isn’t a typical USB battery pack, even though it looks like one. Made mostly from metallic plastic that matches the space gray, silver, or gold colors of recent iPhones, it has a Lightning cable built into the bottom for easy connection to bare or encased devices. Suction cups on one side let it attach or detach from your iPhone on an as-desired basis, and unlike iPhone-specific battery cases, enable it to function as a just-in-case power source for iPads, too…

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