I got the BatteryMinder yesterday, fat shipping from Northern Tools. It is a really nice unit. It's pretty small, about 6x6x3 and 2+ pounds. It is very solid feeling.
There is so much talk on this site about getting long life out of a battery, I though the following excerpt from their website might be of interest to some folks.
The BatteryMINDer® automatically dissolves power-robbing sulphation crystals using safe, low voltage, high frequency U.S. Patented pulse technology.
We guarantee to significantly increase both your battery’s life and performance or we will refund 100% of your money within one (1) full year. This is in addition to our five (5) year “no hassle” warranty.
I haven't had a chance, or need, to use it yet, but think this will be just perfect for what I need. Now I can get rid of the behemoth charger I've had for umpteen years that's the size of a typewriter.