They do stand behind their products, though. When I was in Texas, I
bought
off eBay an older model 2 kVA UPS made by APC that could have external
batteries connected to it. I planned on connecting a large set of
batteries and using it as a backup source for our house.
Mine (APC Smart-UPS 2000) came from GSA. Some portion of $35, the
lot price. (Another small UPS and a big old Ethernet hub came with.)
The 75AH batteries (4, a 48V pack) I put on it were 10x that price!
One day, I heard a strange buzzing noise...a lot of smoke
...it was the UPS.
I hope not here!
-- Jim