I bought one a few years ago, and my 4 year-old batteries only lasted another year. Not saying it was the Nanopulser that did them in, but I am saying it didn't extend their life. The batteries were never drawn down below 40% until they were giving out for good.

When I replaced the batteries I did not reconnect the Nanopulser Battery Conditioner. Anyone want one? Think I'll put it on eBay tomorrow.