My sister bought a Black and Decker 18V trimmer ($99) for her smaller yard and thinks it works fine. It came with two batteries and a 2 year warranty. I use their cordless 18V hedgtrimmer for the 60 or so minutes I need to trimm each spring as well. I was at a Black and Decker outlet recently and they had a few trimmer recons for $39, reg price for the recon was $65. They also came with 2 batteries. I have never had any problem with any Black and Decker recon I bought.

I would think batteries would be more readily available thru B&D as well.