The LINKON Power Stick has a built-in Lithium battery with a capacity of 3000 mAh. It's made using Samsung Grade A cells and aluminum alloy casing so it's very sturdy; But thankfully it's also pretty light so I have no problem carrying it in my purse without it getting weighed down. It also comes in different colors - I picked pink and it is very sleek and attractive.
Charging the LINKON is pretty easy, just use the mini-USB in your phone or device and plug the large USB into any phone charger that uses a USB cord. You can also use your computer, although a plug-in device will be faster. The mini-USB fits in many devices like cell phones, digital cameras, and tablets. It also comes with different attachments - one for iPhones and one for iPods. So it can charge all your devices.
I take the LINKON Power Stick along with me everywhere - from work to travel to everyday outings. It's so nice to have a backup along for when my phone battery inevitably runs out of juice. Overall, this is a great product and I recommend it.
Disclosure: I received this product in exchange for an honest review. No other compensation was given.