A friend in Washington state has a deep cycle marine battery and a power
inverter that plugs in to a cigarette lighter, he bought the whole set up at
Walmart. The inverter puts out 175 watts at 115 volts. He paid $34.99 for
the inverter, I have no idea what he paid for the battery. If the power goes
out he can run his pond for some time.
He is planning on getting a few more batteries, but I thought it was an
excellent idea and plan on setting up something along the same lines
here......

Bear