New Trent Easypak 7000mAh Portable Triple USB Port External Battery Charger/Power Pack for Smartphones, Tablets and more (w/built-in USB cable)
Worked flawlessly with my existing Apple charger cord. Can be charged either with USB or with wall charger. I have purchased this product after having poor results with another charger and I can say that the output of this is as strong as if it was being charged directly into the wall outlet. I would highly recommend this product and would purchase another one without hesitation. Works exactly as advertised and shipped out very quickly.