I’ve used the PBS S7000 charger for a few weeks, and overall I am pretty impressed with it. 7000 mAh of charge capacity is enough to charge my iPhone two or three times, and to fully charge my first generation iPad 3G. The charging of my devices is a bit slower than with other power banks that I’ve used, so it’s not the most convenient charger to have in an emergency. However, there are some other features that it has which distinguish it from its competitors. First of all, this is a very light and well designed charger that easily fits into a compartment pocket of your messenger bag or a suitcase. In an emergency it can even fit inside of a larger pocket. For me however the most important feature of this power bank is its charging cable and the attachments. The charging cable is attached and wrapped around the power bank, which makes it extremely convenient to take with you. The charging cable uses the micro USB plug, which now comes standard with the Android smartphones and tablets. It’s also standard for Kindle and all host of other small rechargeable devices. However, as I mentioned I own an old iPad and my wife has the latest iPhone which use their own proprietary charging/data cables – 30-pin and lightning respectively. For those cables this battery pack provides small attachments which are conveniently stored in a small compartment on the bottom side of the power bank. This is a very simple yet extremely practical and innovative feature, and makes this my external charger of choice for all of my portable electronic devices. One more design feature could have made this a perfect portable charger – retractable wall power outlet prongs that would let me charge this powerbank directly by plugging it into the wall. I hope someone out there is working on such a power bank. I for one would use it all the time and carry it with me everywhere.