tres bon UPS compared to a 1st prize UPS that market fairer after the guarantee that gives all the information we need from you (Battery changed, power used via the included software on Windows 7, silent mode on and off the computer at the threshold that we want) it is more practical because you just put it to the screen instead of won (to do still a little attention to the heat or the foot of the screen), at rest with a power of 200W is yours 12 minutes (computer, monitor and box) The only minor complaint is not connected to the inverter cpl despite taking dedicating, flow and very poor quality