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Review: Power Theory Credit Card-sized External Battery Charger

I was given product in exchange for an honest review.


Another day, another external battery charger! This time it is one that should definitely be on your list because it’s sleek, small and very simple to use. It’s the Power Theory Credit Card-Sized External Battery Charger, and I love it.

The best thing about this charger is that it is SO SKINNY! Seriously, it’s about as thick as three credit cards with the same measurements. And instead of being accompanied by bulky power cables, it’s got one that comes right out of the charger and can easily be tucked back in. It also has an Apple Lightning cable adapter inside so you can use it to charge your iOS device.

To charge it, you’ll need access to a USB port, as well as a USB to micro USB cable. it takes about 3-4 hours to charge, and makes for a decent charge time on your device. This is the minimalist’s battery charger! I would seriously recommend this for any trip where you need to pack light. I can see this being used for trips abroad where it’s best to keep your belongings as close to you as possible. It can fit very easily in a travel wallet that can be tucked under your shirt.

Also great if you just want a bit less clutter in your life. I feel my home is where device cables go to die, so I am always looking for ways to minimize cord use!

This is perfect – not to mention cute and very efficient. For right now the item is unavailable on Amazon, and I hope it makes a comeback soon – so keep it in your wish list in case it returns!

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  • Marnie G (Derrick Todd) March 14, 2015, 2:14 am

    These are great to have. They are so handy. You never know when you are going to need to charge.

  • Sherri March 14, 2015, 6:12 pm

    This would definitely fulfill a problem at our house…. thank you for the review!

  • Linda Meranda March 14, 2015, 8:11 pm

    I really need a couple of these. thanks for the review

  • Michele P March 15, 2015, 8:41 pm

    this looks great, I like that it is so thin!

  • Dianne Messina March 17, 2015, 6:09 pm

    I totally needed the Power Theory this weekend. I was in a place with horrible connectivity and it ate up my battery. We have a huge battery for when we go on vacation but not a nice pocket-sized one.

  • Alison March 17, 2015, 11:32 pm

    I love how light and slender this is! Glad to hear it’s efficient too. Thanks for the review!

  • Tammy Woodall April 12, 2015, 6:30 pm

    Oh my goodness, its hard to believe they made a charger as skinny as a credit card. That’s amazing.
    Tammy Woodall recently posted..Win a $25 Macy’s Gift Card in the Hippity Hoppity Easter Hop! (Ends April 20)My Profile

  • Laura J April 12, 2015, 10:22 pm

    Oh this looks so neat! I love that it charges in only 3-4 hours! Love how thin it is too!!! I need to pick up one of these!


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