Do you think it's possible to hook up a back up power supply to a corded electric lawnmower?
Question:By back up power supply, I mean like one for a computer in case the power goes out. For example:
Power Supply:
http://www.powercom-usa.com/productdetai...
Electric Lawnmower:
http://www.homedepot.com/prel80/hdus/en_...
Or do you think it will destroy the electric lawnmower and/or power supply?
Answers:
I'm sure you could do it if you can find something with the correct voltage and amperage. The problem is that you might come out cheaper buying a generator.
I don't think the power supply would last long. It is not really made for that kind of power. For starters the powersupply is made for ~ 6amp draw (800Va) you would be using it at 12 amps (1440VA) so it would drain down the batteries very quickly.
Hard to say if the internal wiring could even take that kind of amperage.
Sounds like an expensive solution to a inexpensive problem.
If it is that critical and power that unreliable, wouldn't you get more utility out of a generator?
If you are able to get the Power supply that can output voltage with in the range your lawn mower can handle nothing shold be destroyed. However I belive the problem you will enounter is that your battery supply will not last very long at all. A PC uses less electricity than an electric motor meaning especially one that is spinning a blade.
Somewhere on the lawnmower, the electric motor will indicate its requirements: X number of volts, Y number of amps.
So long as you hook a battery to the lawnmower that provides the proper voltage and has enough amp-hours to feed its requirements, you'll be fine.
For example, suppose the motor says it needs 13.5 VDC at 1.5 amps (I'm making this up; but the motor should say something like that).
Many car / boat batteries will deliver 13.5 amps and hold a charge of 150 amps, which means you could run the mower for a few hours before the battery would need to be recharged.
The battery thing you showed won't really work. You want to simply connect a battery directly to the mower's electric motor.
To do that, you need to find the relay that converts AC to DC for the electric motor. it will be somewhere in proximity either to the motor (most likely) or the plug. It will look like a big black box.
The leads to the motor will be in a square on either end of the electromagnet, which will be a cylinder. You tap into the leads coming out of the relay and into that square part to attach your battery. It's very important to make sure you keep positive and negative straight when tapping in.
Solder some standard lamp wire to those leads. On the positive lead, add a fuse that is rated about 20 percent higher than the listed operating amperage for the motor.
For example, if the motor says it takes 2 amps, add a 2.5 amp fuse. You can use an auto fuse or a glass fuse; anything rated for DC current. You can find such fuses and holders for them at any auto parts store.
You want to fuse the connection because if you don't, it's likely the electric motor will burn out by drawing too much current from the battery, which is designed to deliver maximum current.
Why not just buy a used gas lawn mower? It would probably be cheaper than a back up. They are available in the newspaper, yard sales, etc. Just my $.02.
You could, but why?
damn you can buy cordless lawn equipment..
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