I have a Duracell AA/AAA charger that can also use the charged batteries to power a USB port for other devices. That and a couple sets of AA rechargables and I

I have a Duracell AA/AAA charger that can also use the charged batteries to power a USB port for other devices. That and a couple sets of AA rechargables and I can use my phone all day without an outlet. Unfortunately it looks like they discontinued it: http://www.amazon.com/Duracell-Charger-Rechargeable-Batteries-CEF23DX4N/dp/B000XSA5WW/ http://www.amazon.com/Duracell-Charger-Rechargeable-Batterie...