MiliPowerSpring4
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Mophie Juice Pack Air vs. Mili PowerSpring 4 review
If you're an iPhone owner then you've certainly heard of the Mophie Juice Pack. It's emerged as the external battery pack of choice for any iPhone owner needing more untethered power than Apple can provide from its non-removable batteries. But what about all those feisty upstarts? Can they compete in terms of design, functionality, and price? Let's find out. We put two iPhone 4 external battery pack cases -- the Mophie Juice Pack Air and Mili PowerSpring 4 -- head to head to see how they perform. Both promise to double the iPhone 4's 1420mAh li-poly battery life without adding too much bulk. And surely the 1600mAh capacity Mili outlasts the 1500mAh Mophie, right? You'd be surprised.%Gallery-102982%
Mili PowerSpring 4 doubles the battery life of your iPhone 4
There's a big difference between the iPhone 4 and Galaxy S. No, not iOS vs. Android 2.1 or even Retina vs. Super AMOLED. We're talking batteries: one is removable and one isn't -- guess which is which? This perennial iPhone "feature" has spawned as entire industry of device-specific accessories that sate the need for more juice while simultaneously killing the form (and aesthetic) of an otherwise pocketable gadget. But hey, it's your only choice when you're either too busy (CES) or unable (intercontinental flights) to tether yourself to a power socket. And guess what? Those curvy battery packs that hugged your iPhone 3G/3GS won't work with the boxy iPhone 4. So, here's the latest, and one of the first iPhone 4 cases with an extended battery pack to ship. The Mili PowerSpring 4 starts shipping today for £54.99 (or $85 on Amazon). It claims to be the world's thinnest iPhone 4 battery pack to double your battery life thanks to a 1600mAh capacity Li-Pol battery. That makes this roadwarrior necessity just a bit less evil.
