PinkFloydEffect
Regular Contributor
I am trying to calculate the run time of a UPS for a mini aquarium. If the power fails the pump stops, which supplies water to the rear wall that is covered in plants now. Without water they dry up quickly and die, all aquatic species so they rely on constant water. The filter clogged and the rear wall dried up, which made me think about a power failure.
I have two APC Back-UPS units laying around I could use but they will need new batteries. The first is a model BE550G rated for 550VA / 330W.
I also have what they are calling the BE550Gs successor, model BN650M1 rated for 650VA / 360W.
I do not understand how it is a successor, it may have a higher output capability @ 650VA and 360W but the battery is only 2/3 the size of the BE550G...likely 7AH tops. Seems like a dumb idea to increase the power handling of the inverter while decreasing the battery size. On the other hand I just bought a new 9AH upgrade battery for the BE550 which is typically 7-8AH. I am not sure if there is something wrong with it though, when testing with a drill it actually speeds up when I unplug the AC...yet the voltage drops from 120V to 85V when you unplug the AC with no load so I do not understand why it speeds up or if 85V is a failing inverter.
With my 9AH battery in mind, I have two things I want to run on the UPS...the pump and light (not my main light shown here). The pump is rated 6W @ 110-120V (0.05A?) and the secondary accent light is rated 0.30A @ 110-120V (36W?) so how long will this run on a 9AH battery?
I have two APC Back-UPS units laying around I could use but they will need new batteries. The first is a model BE550G rated for 550VA / 330W.
I also have what they are calling the BE550Gs successor, model BN650M1 rated for 650VA / 360W.
I do not understand how it is a successor, it may have a higher output capability @ 650VA and 360W but the battery is only 2/3 the size of the BE550G...likely 7AH tops. Seems like a dumb idea to increase the power handling of the inverter while decreasing the battery size. On the other hand I just bought a new 9AH upgrade battery for the BE550 which is typically 7-8AH. I am not sure if there is something wrong with it though, when testing with a drill it actually speeds up when I unplug the AC...yet the voltage drops from 120V to 85V when you unplug the AC with no load so I do not understand why it speeds up or if 85V is a failing inverter.
With my 9AH battery in mind, I have two things I want to run on the UPS...the pump and light (not my main light shown here). The pump is rated 6W @ 110-120V (0.05A?) and the secondary accent light is rated 0.30A @ 110-120V (36W?) so how long will this run on a 9AH battery?