There are plenty of external batteries on the market that have USB ports allowing you to keep your smartphone or tablet charged up on the go. The thing I never liked about those battery packs is that you have to carry your charging cable with you. I think we should be getting away from cables, not trying to carry more cables with us on the go.
Mugen Power has announced a new portable power bank that sheds those wires, assuming your smartphone is compatible. The cool new feature is that the Mugenizer N11 supports Qi Wireless charging. That means if you have a smartphone that has integrated Qi charging technology or a phone with an accessory battery door (and a Qi battery pack), you need no cables.
All you need to is place your Qi enabled phone on the surface of the battery and the power will flow. The N11 has a 4800 mAh battery, so you should be able to get about two charges out of it with most smartphones. The device also has a conventional USB port so you can charge via cable if you need to. Of course you still need to plug in the battery to juice it up too.
You can pick up the Mugenizer N11 battery pack right now for $69.99 (USD).