Bought 2 Sears smart chargers on Black Friday for $20 each...

 

Those are what you wanted...........they all work the same.

A float charger is a float charger, they all have circuitry in them that detect when the battery drops below or goes above 13.2 volts and turns on or off as needed.

Been using them for years on my bike, lawn mower, and atv.

Steve

 

The components of all float chargers are essentially the same. They all have a given life and last for a number of years based on our many hrs they are connected. All of them get their componetry from China.

Paying more for these float chargers doesn't really get you anything for your money.

 

+1 on Heatwave comment - Walmart has good ones for $20 with the SAE connector, and the clip leads too.