Battery Doubler: double your battery's autonomy. Battery Doubler can double your battery's autonomy with little to no concessions. Install Battery Doubler, unplug AC power and experience total laptop freedom! * Double your autonomy Before, your only solution to have a decent battery for your laptop was to buy an extra one. Now, there's a lighter, more efficient, and cheaper alternative: Battery Doubler! Because it doesn't use standard techniques (dim screen light, etc.), but finds out what to turns off what isn't needed, such as, for example, the USB ports, you can get up to twice autonomy without sacrifice comfort. * Decrease recharge time Your battery recharges much faster if your computer isn't turned on. That's a fact. Let Battery Doubler redefine a few computer facts - with its Turbo Charge technology, increase up to 10% battery recharge speed when your computer is turned on. * Recalibrate damaged batteries * Easy to use * And much more