Technical Desulfating battery chargers

Anyone have experience with these? Do they really work? Not trying to bring batteries back from the dead, just keep the older ones healthy.

 

This came up.
http://support.rollsbattery.com/support/solutions/articles/5964-battery-sulfation

 

I bought one about 4 years ago. I tried it on a couple of batteries and it didn't work. It's buried in my shop somewhere. If I come across it, you can have it.

 

Put some Epsom salt in the battery.....