Battery charger for 12V power supply?
May 26, 2007 2:26 PM Subscribe
Calling electricians: can I use one of those "battery chargers" they sell at Auto Zone to power a small appliance that needs 12V?
posted by hodyoaten to Home & Garden (13 answers total)
The appliance is an RV waste pump that needs to be on just 5 minutes every week. The manufacturer sheet says it needs a 12VDC 20A connection. The only available power is 110 VAC.
It's pretty much impossible to find any kind of 110V to 12V converter, but there's oodles of battery chargers like this
at AutoZone, Wal-Mart, etc. Will these work as a basic power supply, or will they act flaky when they don't get connected to a battery? Will those fully automatic
chargers refuse to power a motor? Can I just go by the highest amp rating on the charger packaging and make sure it's 20A or above?
Again, I will only be operating the thing 5 minutes a week, so I don't need a certified, by-the-book connection; just something that will get the job done.