Says what he does and does what he says: perfect!

So I made the trust without regrets, and I took this APC Back-UPS Pro 900 replacement.
It is a bit more expensive, but its quality and features are incomparable:

- Display of voltage, consumption, and autonomy on an LCD display illuminated front panel.
- Six taken "standard" (Le trust has connectors such as the back of the power supply 'of a PC).
- Software provided (Powerchute) very comprehensive and well integrated with Windows 7: sensitivity adjustment and log electrical failures, overvoltage, undervoltage, instantaneous consumption in kWh / d, calculate monthly / annual cost estimate of the autonomy in real time, functional test of a click ...
- Quality Control Sheet checked with fifty points.

When buying this type of product is that we want something reassuring, and it is better to put a little more money to get the expected result.

When the choice of the online seller, Amazon is clearly above the rest: beyond delivery charge is reasonable or available, this is the first time I tested a return home (for the trust that did not work) .
They are super clean: easy recovery and without discussion of the other inverter, return to their dependents, paid in a week, command + shipping the Back-UPS Pro 900 in two days. Nothing like almost all the other hi-tech supermarkets net, which I use extensively for over 15 years.

I recommend this UPS model, and I advise to buy it from Amazon.