john muir wrote:
I am recording nature to be played at an art show where the artists'
subject matter is a river and surounding area.

A local battery store suggested I use an "inverter" with a deep cell
battery. Anyone ever tried this and does it work well.

The alternative would be to buy a field recorder, but those seem kinda
expensive for the limited use it would see.

Once you have determined to what you will record, be prepared for some
real challenges. Nature is a very very quiet instrument! As a result,
you may find yourself having a hard time minimizing all of the noise
that is present. I tried this in cottage country, thinking that by
getting up at 5 in the morning I would get a lot less noise. Well
I did, but a motorboat 5 miles away is louder than the sound of the water
lapping on the shore 20 feet away. And somewhere there is always a pump
going, bringing water up to cottages.

If I ever do this again, I will try to go as far into backpacker country
as possible. And I will bring quieter mics and a recorder that doesn't
make acoustic noise.

Rob R.