My beach vacation house I was in last year was equipped with that for the elevator. It worked when we lost power in a hurricane. It lasted for a half day then turned off, I even tested it myself before the storm came.
Hey Nic, I returned my EC 650 and got an EC 850.Doing the math, my unit would be 120 x 6 = 720. So that should work. But it does not. I am assuming when you open the garage the capacitor discharges to give a surge to better open the garage. Hence, it overloads the batter backup. But I have no idea what the amps/volts are in the surge. In California, if you replace your g-door you either attach to the motor yourself; or the vendor will only do it IF it has a battery backup (CA law). Oh well, just an FYI for you. Thanks!
That’s strange there must be high inrush current or surge current like you said do you know if it is an AC or DC motor mine is a DC motor so it doesn’t have a hard start inrush current could be part of it
@@nics-systems-electric Hey nic. I contacted chamberlain and they said ac motor. Maybe that is why your configuration works and mine doesn’t. I didn’t know there were both types. Might be something to add to a video. Thx bud!!
@@skicrazutube yeah that’s interesting if I do a video again I will definitely add that. I didn’t think they would have that high of inrush current now I know sorry that didn’t work for you
I have a Chamberlain Liftmaster 3280 Professional Formula I from the early 2000s, single garage door. Should I try this battery backup or a bigger one? I beleive your garage is similar to a single door / car size but can't see very well. If it is, how many times were you able to open and close the garage? Thank you so much!
I haven’t opened it more than probably four times on battery back up at a time just because I haven’t needed to. you could give it a try look at the wattage or amperage of the garage door opener to make sure it’s not too much for the UPS what size bulbs are in it will affect it a lot too if they are incandescent if they’re led they wont make much difference
@@nics-systems-electric Thank you so much for your response and great content. I appreciate it. :D Will take your advice, make a purchase and will give you feedback.
@@nics-systems-electric I beleive we're on the same track. Just re verifyed the specs, and yes, I have a half horse power, exact model is 3280M, manufactured in 2010 (I didn't remember we had to replace something 11 years ago, but the original one was way older). 120v, 6amp, 60hz. Do you think this will work for me? Thanks!
So many questions! I've been thinking of doing this. How many times can your open door on battery? How long will it power just the cameras? How long will it sit at idle and open the door? Seems to me the power tends to go out at night , so say the power goes out at 2am. I want to stay in bed until 7am then be about to open door to get my generator out of garage. Do you think the ups would last that long?
This is a 1/2 hp I’m not sure how many watts a 3/4 horsepower opener is I would think around 700 watts which is too many for the UPS but some garage door opener‘s used DC motors so I’m not sure how that would affect The wattage you also have to keep in mind bulbs in it as two 100 W bulbs would significantly increase
@@nics-systems-electric Thanks. Yes, 700 or 750 watts would be a safe number for my 3/4 HP opener, my thoughts exactly. That may be hard to mount on the ceiling, and risky to keep in the attic, so I'll have to think about a different place with a longer cable.
Hello Nic, I purchased the EC Series 650va/390 watts (smaller watts than your video) and connected as your video recommended. When I break the fuse and then attempt to open the garage, the Chamberlain (just like yours) moves about 1/2 inch and the unit produces one continuous tone. The user manual implies that I am overloading the unit. My Chamberlain model is B552. Any ideas? Thanks!
@@nics-systems-electric thanks for the super quick reply nic,...how do i calculate the correct backup bat size? My opener: 120v / 6A / 60Hz / 1/2HP. thanks!
@@skicrazutube Multiply the amps by the volts so times 120x6 gives you 720 W can depend on the lightbulbs in it too if they are incandescent or low wattage LED
Im an actual electrical engineer. You likely need a UPS that is designed for running AC motors which will have (2) batteries for the huge inrush for single phase power at 120VAC. Look for UPS made for sump pumps. Single phase AC motors get no rotational power from the power source so we use terrible starting circuits which will lead you reading about locked rotors, pernmant split phase capacitors, starting torque, and other rabbit hole topics.
It’s interesting that the opener you have installed doesn’t have an internal battery backup. Those models typically do, some models down here have had battery backup since 2004 or so
Adding onto this, models that do support this will automatically disable the lights and run the opener at a slower speed to conserve power, so it’s something to consider if you ever want to replace your opener
That would be good I won't be replacing it anytime soon as it's only a few years old now that I have generator it is not really an issue but if I didn't that would be nice to have
