Back up sump pump again ?
 

I had french drains with a sump pump installed . Now I am worring that
if my power goes out that I may need a battery back up .I have been
reading of a WATER POWER backups .Would that bb better then a battery
backup ?Does the water power generate from the water going into the
basin were the electric sump pump is ? I have a Little Giant model 6E
CIA SFS are they a ok sump pump ?