Free Power Inverter from UPS runs A/C

[Boyntonstu]

Please note* A UPS may or may not be pure sine wave. Check first.

I have been doing this for years.

If you need more than 800 Watts, use another free UPS.

[video=youtube]

 

[jimindenver]

Hooo boy that little A/C did not like that UPS. Still it's a way to get a free inverter if you have the know how to get into it and especially get rid of the alarm speaker.

 

[Weight]

500 watt air conditioner?

 

[Wabbit]

...that little A/C did not like that UPS...

How could you tell? The sound?

 

[mr_elijah_gardner]

I've done this before myself. Not for a van but for other projects. I guess its a way to get a cheap inverter but I found in the long run it was just better to get a inverter designed for heavy use. These the ups inverters seemed to fail quickly.

 

[Boyntonstu]

I've done this before myself. Not for a van but for other projects. I guess its a way to get a cheap inverter but I found in the long run it was just better to get a inverter designed for heavy use. These the ups inverters seemed to fail quickly.

Are making a generalization when you say that all UPS inverters fail quickly?

Do you include PSW inverters in the group that fail quickly or just MSW inverters?

Some PSW UPS PS are built like tanks and they are make for heavy duty operation.

OTH Small UPS units are easy to use as inverters and I consider them disposable and easily replaced.

 

[jimindenver]

How could you tell? The sound?

Yes, the buzzing noise. The dirtier the inverter sine wave the louder the buzzing. It would not buzz at all on PSW.

 

[mr_elijah_gardner]

Are making a generalization when you say that all UPS inverters fail quickly?

Do you include PSW inverters in the group that fail quickly or just MSW inverters?

Some PSW UPS PS are built like tanks and they are make for heavy duty operation.

OTH Small UPS units are easy to use as inverters and I consider them disposable and easily replaced.

Ok yes, I was generalizing about UPS inverters failing quickly. The only ones I've ever done this with were not high end units. They were units the batteries had long been outlived and were not worth replacing. 

I will note not most UPS units are only intended to run power for a very short period of time. Mainly to keep a computer from powering off while the power cuts off for a minute.

I will concede that a top end unit could have a perfect heavy duty inverter. Most of the ones people are throwing away will not be that top end unit.

 

[MikeRuth]

Yup I have an old BACKUps 1000, it was definitely designed just for a 10 to 20 minute run to keep a pc running or shut down if it went to long.

I doubt that under heavy load it's going to be very happy.

 

[Boyntonstu]

Yup I have an old BACKUps 1000, it was definitely designed just for a 10 to 20 minute run to keep a pc running or shut down if it went to long.

I doubt that under heavy load it's going to be very happy.

I wonder why UPS's fail?  What actually fails?  Was it because of poor design or heat?

What inverter do you use?

Of prime consideration, what do you want to power with an inverter?

Does your appliance need to be fed pure sine wave?

How many Watts do you generate?