A:AnswerThank you for your inquiry. It is possible to silence the on battery alarm through the LCD display. Please refer to the attached manual.
http://www.apc.com/salestools/EALN-7V5MXA/EALN-7V5MXA_R2_EN.pdf
The BR1300G comes with a 3 year warranty.
A:AnswerI don't know that you can't, but it is not designed to work that way. It has ventilation on both sides. It would be awkward, at best. Mine didn't fit where I thought it would, on a shelf.