The myGrid USB Charger is a rechargeable Li-ion battery with a USB output with enough juice to extend the life of most smartphones by four hours and the life of most e-readers by up to 100 hours, according to Duracell.

For $34.99 that makes this one a no-brainer and you can get one today at CVS, Walmart, Target and Amazon. It comes with both mini-USB and micro-USB adapters.

Of all the features, you could add to my smartphone, at the top of the list of features I really want is easier charging. It’s not difficult mind you to plug in a cable, it’s just inconvenient since I always have to climb around under the desk looking for it after it inevitably falls off.

I want to walk in and lay the phone down to charge and be done. We have seen this type of wireless charging system before from WildCharge. Duracell is now peddling a line of Smartpower devices including one called the myGrid charging pad. The pad lets users charge multiple devices by just laying them on the pad.