UPS battery packs

Yes, a guess is better than a crapshoot. But you have to take into account the lower graph of efficiency, especially past the point where they cutoff; all their numbers have a fairly steady efficiency, but it plummets past 45 watts. Conveniently, the upper graph cuts off at a 50 watt load.

 

haha reading the stats would have obviously helped

 

I want an APC. I think I killed my last one. It was in my fathers office though so I think it had some abuse. It would give me time to get home and set up my generator. Keep us posted on the stats please.

 

I believe the ratings in VA mean VAh, or VA hours. This would be the same thing as Watt-hours because W=V*A

 

Haha, i was lucky with who mine belonged to first. Was a family friend who was a computer engineer. This use to be hooked up to two high end pcs and 5 monitors. It weighs about 50lbs.

 

yeah you got a steal. Mine is about 25 lbs but it sucks.

 

ok so for simplicity sake, if you guys were buying one right now, which one would you buy?

 

Ah, the confusion of UPS sizes.. hehe.. It all depends what you are trying to power & for how long. I tried to power my 170W return pump with a SmartUPS 650 & thought my UPS was going to blow & my pump made a loud noise, as to it was being under powered. I have a conversion sheet that I recieved from APC, just trying to see where I put it. Let me find the online version.

As for powering a powerhead or mag 7 no problem.

 

Well, even at 9 watts that UPS is still at 71% efficiency, so it will run a looooooooooong time. I have a Cyberpower 525SL (330 watts) hooked up to my return pump. Running a 45 watt Mag 5 return pump on it, I gave up after 45 minutes of run time. It still had juice left in it, but I had run out of patience, so I don't know exactly how much was left. I now use a Mag 3 so the run time will be even longer. Typical power outage where I live is 10-15 minutes, so 45 minutes was fine. I also tried a 4 watt Koralia K1. After 4 1/2 hours (I left and came back as I knew it would last at least 5 times longer than the return pump trial run), it was still running. Again, way more time than the typical power outage in my area. And again, I have no idea how much battery run time was left, but frankly I didn't care. Where I live the outage lasted more than 2 hours twice in the last 20 years.

 

Sweet! Do you have a link to yours by any chance?