A power pack for your keychain

The Mophie Juice Pack Reserve Micro is a slim, lightweight battery pack. It's micro USB plug means that it can give a power boost to your phone, e-reader or other mobile device.

The Mophie Juice Pack Reserve Micro packs reserve juice for your micro USB devices.
(Credit: Mophie)

You know the old saying: you can never be too rich or too thin, or have too much battery power for your Android phone.

If you're forever running low on juice, you've probably thought about packing a spare battery — but that's a hassle. Not only do you need a way to keep it charged, you also need a convenient place to stow it.

(Credit: Mophie)

The original Mophie Juice Pack Reserve offered a keychain-friendly external battery, but only for iPhones and iPods. The new Juice Pack Reserve Micro brings that same mobile-power goodness to Android phones and other micro USB devices.

Unlike the iDevice version, which has the chunky, somewhat unflattering look of a Zippo lighter, the Mophie micro USB is slim and sleek, with rounded edges and an all-black casing. It measures 1.77x3.56x0.5-inches — small enough to slip into your pocket, without overloading it.

As you can see in the photo, it has two plugs that tuck away on either side: a standard USB that's used to charge the battery pack itself, and a micro USB that plugs into a device to charge its battery. There's a built-in multicolour LED that indicates the charging status of both the connected device and the Mophie itself.

The Mophie packs a 1,000mAh rechargeable cell. That's probably not enough to fully recharge a typical phone (for example, the Samsung Galaxy S3 has a 2,100mAh battery, so you'd barely get it to 50 per cent), but it's enough to let you make some calls, send some emails or even finish that movie you're watching. It could also potentially supply extra juice to your camera, Kindle or other small device.

Now, for the bad news: The Mophie costs US$39.95. There are any number of Android-friendly mobile power packs — with much bigger batteries — for half the price. Of course, most of them aren't suitable for keychains, so what you're really paying for here is convenience. Mophie's backup power goes where you go, and you can pretty much forget about it until you need it. (Note to Mophie: Lightning version, please.)

I'll update the post in the near future with some hands-on impressions. In the meantime, what do you think: is this pocketable juice pack worth the money, or is it too pricey?

Via CNET.com

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