Is a cheap locally made (desi) UPS safe to provide back-up power to a computer equipment, compared to a branded one such as the ones by APC (http://www.apcc.com/products/category.cfm?id=13).
I hear that locally made UPSes use cheap materials (cheaper inverters and battery chargers) and may not provide the modified sine wave AC required to safely power a computer. How much of this is true?
Also can I buy a good quality inverter and battery charger from any where in Lahore and have my own UPS made from some expert electrician? Does this approach save me any money than to buy a branded UPS.
Also the branded UPS from APC that I know of do not use an external battery source for longer back-up time to the extent of a few hours.
Can any one also provide information about local availability of good quality chinese UPSes such as the ones available here