APC - Back-UPS Connect 450VA, 120V, 6 NEMA outlets (2 surge) - Black

Thank you for your inquiry. The amount of runtime available will depend on the size of the load attached. Please refer to the attached brochure for runtime information for typical loads. http://www.apcmedia.com/salestools/JSIE-AD7S69/JSIE-AD7S69_R0_EN.pdf?sdirect=true

Thank you for your inquiry. The BN450M will recharge its battery. The normal life of the battery will be anywhere from 3-4 years, depending on battery usage, load percentage and operating environment. The batteries in the BN450M are not user replaceable.

Thank you for your inquiry. Unfortunately this unit will not provide a graceful shutdown of your system. It designed primarily to be used with smaller equipment like a modem and router. If you wanted the UPS to trigger a graceful shutdown than you would need to go with our BE600M1 instead. You would then connect the USB cable that comes with the UPS from the Mac to the UPS. You can use the embedded energy saving features of the Mac OS to provide a graceful shutdown of the system.

Thank you for your interest in our products. I would lean more towards getting a larger UPS because there is a chance that this unit would become overloaded since it only supports 255 watts of equipment attached to it. I would probably look at least towards the BE600M1 or BVN900M1.

I haven't tried but this is a very small battery. Very very small. There is a good chance it might try to open the garage door only to either burn up the APC or worse your garage door opener due to lack of amperes. When you have a load pulling more amps than a power supply can provide what generally happens is something gets smoked. If you were trying to get a portable way to open a garage door then I would get a large car battery, a 12v. power inverter (to convert the car battery to 120v AC.), and a cheap battery charger to refill the car battery. This will be more expensive but much safer and less chance of screwing up your garage door opener. Before you spec out and buy your 12v power inverter look on your garage door opener for input current or wattage. If it is displayed in wattage take the number and divide by 110, this will tell you how many amps it pulls out of your wall. It'll probably be arourd 2 to 6 amps or so (I've never messed with a garage door but there are other factors at play that I cannot estimate like how heavy your door is and how much of a counterbalance you have aiding the lift.). Use that amp rating when deciding on a power inverter and make sure your inverter is 30% stronger than necessary to avoid smoking components. Good luck. FYI. I have spent a couple years doing work in electronic prototyping.