Recommend me a battery backup

[IronWing]

These power outages got me thinking. I need a battery backup for a medical device.

Label specs:
1.5A
120V AC, 60Hz
80W

Needs to run for ~15 minutes x 4 times per day so an hour/day. Needs to last at least one day. Two or three days use would be better but we'd likely have to leave the affected area if the power was out for much more than a day for other reasons.

Weight/size really not an issue as long as a reasonably healthy adult could move it.

 

[sdifox]

what kind of medical device? is it sensitive to AC waveform? If so, you may have to go

http://www.tripplite.com/en/product...D=937&fcc=CA&gclid=CMrzq5PbwLMCFc5cMgodaTYABA

 

[Jumpem]

http://www.apc.com/products/family/index.cfm?id=27&tab=models

Set the power draw to 100W. Even the highest model estimates only a bit over an hour of operation.

 

[mmntech]

A Drilldo is not a medical device.

Seriously though, UPS units are only designed to last for short periods. For frequent outages, it might be wise to invest in a generator or a deep cycle battery system like the kind used for solar setups.

 

[IronWing]

what kind of medical device? is it sensitive to AC waveform? If so, you may have to go

http://www.tripplite.com/en/product...D=937&fcc=CA&gclid=CMrzq5PbwLMCFc5cMgodaTYABA

It's basically a medical grade aquarium air pump so I doubt it would be too sensitive to waveform.

 

[sdifox]

It's basically a medical grade aquarium air pump so I doubt it would be too sensitive to waveform.

link to device spec?

5KVA should be plenty for your purpose.

http://www.tripplite.com/en/products/model.cfm?txtSeriesID=744&txtModelID=60

 

[sciencewhiz]

It's basically a medical grade aquarium air pump so I doubt it would be too sensitive to waveform.

AC Motors are very sensitive to the waveform.

 

[sdifox]

AC Motors are very sensitive to the waveform.

He may just be aerating a tank, in which case it doesn't really matter.

 

[sciencewhiz]

He may just be aerating a tank, in which case it doesn't really matter.

An AC motor most likely won't even run on a square wave. It will probably run on a modified sine wave.

 

[sjwaste]

Get an inverter generator if your electronics are sensitive. If not, just get a regular generator. Unfortunately the inverter type tend to be expensive and relatively low wattage, but they'll cover your application.

 

[sdifox]

An AC motor most likely won't even run on a square wave. It will probably run on a modified sine wave.

Good UPS don't output square wave these days, most are modified sine.

I linked to two, one is modified sine, the other true sine.

actually strike that, they are both true sine, or so they claim.

 

[sjwaste]

Good UPS don't output square wave these days, most are modified sine.

I linked to two, one is modified sine, the other true sine.

Can you use a UPS to clean up the output from a generator? Or will the UPS itself get flaky?

 

[sdifox]

Can you use a UPS to clean up the output from a generator? Or will the UPS itself get flaky?

They do clean up the power, they are line interactive. The true sine one does a better job since it does double conversion. So AC to DC then back to AC.

 

[qliveur]

Funny, we've been talking about this very subject over at Hot Deals.

You might want to look into CyberPower's PFC line. It's pure sine wave and it's affordable.

 

[ussfletcher]

I vote for a deep cycle battery system and an inverter.