The powergorilla laptop charger will give you an extra 2-5 hours of power, depending on your laptop's specification, and over 20 hours on various other electronic devices.powergorilla will work with devices up to 24Volts - so from your laptop, right the way down to your mobile phone or iPod.  Just select which voltage you require; 5V, 8.4V, 9.5V, 12V, 16V, 19V or 24V and the LCD screen will indicate which setting has been chosen, then connect your device and start charging.  You can even daisy-chain, so whilst the powergorilla is charging your laptop, you can charge the powergorilla from the mains power supply.  Or charge your laptop and your mobile phone simultaneously.One-touch button technology means the powergorilla charger for laptops is easy to use and its sleek, aluminium casing with shock resistant rubber protection strips makes it a stylish accessory for your laptop. The powergorilla has input voltage auto recognition which means that if you use your own AC laptop charger (between 16 - 24V only), the powergorilla will automatically detect the voltage level and set the LCD display accordingly.  It also has a permanent on feature so that when the powergorilla detects it has been connected to a device, the LCD screen will flash and the user can double-click the on/off button to permanently lock the powergorilla on.By selecting the 8.8 option on the LCD screen, the USB will be locked permanently on - this is beneficial if charging a low power consumption device from USB.When used in conjunction with the solargorilla, you'll have a totally portable power station - perfect for when you're "off-grid".   The powergorilla also features solargorilla auto recognition, which means when you connect it to the solargorilla, the powergorilla will shut off unnecessary internal circuits to improve charging time by up to 2 hours  - confirmed by the solar symbol in the LCD screen.The powergorilla has also been on field tests out in Afghanistan, Madagascar, Zambia, Antarctica and Norway.  Being subjected to extremely hot and very cold temperatures, the powergorilla has successfully charged numerous laptops and other power-hungry devices and is a favourite amongst our brand ambassadors.Works WithWill Also Work With Number of ChargesLaptop                               1-2 timesiPad/tablet                        3-4 timesiPhone/smartphone        6-10 timesGPS                                   8-10 timesMobile phone                  8-10 timesMilliamps Hour (mAh): 21000Dimensions (L*H*W cm): 21.5 x 13 x 17Battery Type: Lithium PolymerVoltage: 24V