600 va ups
POOR PERFORMANCE
I HAVE PURCHASED A 600VA UPS THREE MONTHS AGO. BUT ITS PERFORMANCE IS VERY BAD FROM THE FIRST TIME INSTALATION. WHEN POWER IS GOES, IT NOT PRODUCES THE BACK-UP. WHATEVER ITS BATTERY IS COMPLITLY CHARGED. PLEASE LOOK AFTER THE PROBLEM AS SOON AS POSSIBLE. DUE TO THIS FOUR TIMES MY PC WINDOW CRRUPT. ...