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Hi, anyone have information on the questions I asked in my previous post?
I am disabled and use an electric bed designed for home use. It comes with a backup battery pack that holds 3 9volt batteries in case the power goes out when the head of the bed is sitting up and needs to be lowered.
As I live in Florida with hurricanes and intermittent power outages. I want a battery backup with more power and duration than the 9volt.
I am not sure which backup unit to get, the Back-UPS or Smart-UPS. I don't like the Smart-UPS as when the power goes out, a fan within the unit goes on and drains the power out of the battery. I can not reach the power button on the UPS when this happens and I would quickly lose all the charge.
Then there is the issue of the Wave Form type. Will "Stepped approximation to a sinewave" work for me? Remember, this bed was designed to work off of three 9volt batteries, so I'm hoping the stepped sinewave will work for me and I will not need a true Sine Wave.
What do you think?
Walter - how have you resolved your issue?
I am in the same situation and would like to buy a Smart-Ups for my Mom's electric hospital bed in case of power outages.
Any advice is appreciated : )
Thank you for your thorough response and all the information.
Yes, the bed does have a small motor and it has a standard 3 prong plug. I got the following info off the side of the motor case to try to determine how much power it draws:
24 Volts DC
Max 3.6 Amps
Can the above be used to figure this out?
Basically, I need something that will power this motor for about 30 seconds at a time, two or three times a day and hopefully for a few days - in case a bad hurricane comes through. You mentioned that the fan in the larger units will not draw down the battery backup time. But over a few hours or a day or more, won't it draw down power then?
Sorry for the delay!
The fan on the unit draws a minimal amount of power, and is not enough to be an additional factor beyond our existing runtime calculations.
However, regardless of the presence of a fan on the UPS or not, our UPS' are not meant to be used in the same function as a generator, i.e. for multiple days of power supply. Based on the specs you have given, you would need a prohibitively large/expensive UPS to be able to get multiple days of power in an emergency situation. Our units would be great if you just had a lot of 30 second interruptions in power during the course of a day, and then continued with normal wall power the remainder of the day, but if you require the UPS to be on battery for days then I would have to suggest a generator instead.
Hello, you ever get anything for your electric bed??
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