A:AnswerThose don't really convert. This backup is rated at 950VA and under maximum load it lasts 2 minutes. That is 1900 watts of stored energy. Watts=VA. You will be pulling 110V likely during discharge.
A:AnswerHello, The SX950U has a 510-watt limit. Depending on the connected equipment, you may overload or damage this UPS. Wattage consumption will vary with different manufactures and models. Good question!
A:AnswerYes it will but CPAP makes it almost impossible to compare this product with their more expensive lithium ion battery options. My closest guess would be 6-8 hours at the 950VA rating. According to thecpapshop.com a deep cycle marine battery is a very effective backup that can run the machine for 3 full days. It weighs more than the lithium ion CPAP units but costs less than half the price. Great for RV's and extended outages!
https://www.thecpapshop.com/blog/cpap-battery-power/