Socket Communications AC4009-614 Li-Ion Mobile Power Pack

• HI-CAPACITY LI-ION BATTERY

I got this for several reasons. First, I am sick of buying extra batteries for my mobile phones and PDAs. For the price of two of those you can pick this unit up, so it quickly pays for itself if you buy new devices as often as I do. Second, I can now charge my devices anywhere I want to without having to sit in the floor at the airport or wander around at restaurants looking for an AC outlet. It comes with a ton of adapters and will readily charge most things that can be charged with a USB cable, so if your phone or PDA has a USB charging cable, that is all you need.

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I purchased this unit about 5 years ago, for a cross-country bicycle tour, and this thing just won't quit!

I kept my Palm TX pda (with wi-fi), and flashlight, always charged throughout the extended journey.

Back at home, I also found that there are so many portable devices that are greatly enhanced by the 5VDC 7.2Amp-Hour socket® mobile power pack.

My latest project is hacking a 8" Frame Wizard® image/video/sound device, with the 5VDC 7.2Amp-Hour socket® mobile power pack pressed into service, again, for the task (will power audiovisual presentations on the device for four hours, by the way).

If this trusty, hardworking unit eventually dies I will most certainly break it open and replace the dead Lithium-Ion cells with newer, and even higher capacity, Lithium-Ion cells.

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Basically there's nothing else to add to that the previous reviewer didn't say. It rapidly charges all your portable digital devices (including phones, pdas, mp3 players...basically anything with a usb cable).

The unfortunate problem is that the battery pack (held in the socket case you see pictured) is an actual 5volt Lithium Ion battery that fits into the palm of your hand and is somewhat heavy---no lightweight power source here. Unless you have a long trip ahead of you, it's not something you can lug around every day on your shoulders, particularly if you carry a heavy load everyday as it is. It weighs about 1.5 pounds and you feel every inch of it if you're carrying a small bag or even a messenger bag for a long period of time.

That said, even though it's the ONLY problem, it's also the LEAST of the problems because it Works so well. Additionally, it has a bonus that other lighter weight power packs do not: This pack has the MAXIMUM power wattage 7200mah found in any other battery pack on the market as of the date of this review. Check around and you'll see it's the truth. What that means is that the output gives you a longer charge in a shorter amount of time and actually has more staying power left over. This is a powerful external battery source and worth the money until Socket creates something similar in a lighter weight...and I'll buy that too whenever it comes out. I'll take a picture of the battery pack as it really looks inside and add it to the pictures above.

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I have two of these. I bought my first one from Dell back in 2005 as an extended battery pack for my Axim X50v PDA. Since then, my mobile life has expanded to a small but expensive collection of PDAs, superphones, ipods, and tablets. The Socket Mobile Power Pack drives them all! After hundreds of charges, this high-density battery has not shown any signs of performance degradation.

I misplaced my first one during a move last summer and absolutely could not live without it, so I purchased a new one from Amazon, which was 30 bux cheaper than Dell! Of course, my original MPP turned up several weeks after the second one arrived. If it was any other electronic device, I would have sent the new one back, but having two of these babies is actually a good thing...