The UPS of APC doesnot work common household invertors. There is frequent tuning problem. Forget it if you are thinking of running the ups on invertor.
The company has a policy of replacing more than 1 month old UPS under the warranty with a so called republished UPS. That means a UPS discarded by one person is installed in the house of a second person without telling him the truth. That means if u have a minor problem or doubt regarding regarding your UPS and u book a complaint, the service person will readily change ur piece with another even worse pace, without telling u the truth about the replaced set.
U r happy thinking that the company is so good, it replaced the set without much pursuance. But u realize the truth later when problem appears in this new ups. when u try to book a complaint with the serial no. of this new ups, u will be shocked to hear that it registered in the name of some other customer and u have to recollect the serial no. of now old ups.
I think this policy of company is a cheating with customers and I recommend that no one should buy an APC ups.