I have several of these (from Harbor Freight) that I paid $5 each. I have them on my motorcycles over the winter.
They are maintainers, as they need to sense a voltage in order to work. It WILL NOT work on a dead battery, and it WILL NOT over-charge a battery.
I got one of those cheap HF maintainers and put it on my Power King. The first time I went to start it after that I thought the motor was going to come out of the frame it was cranking so fast!
I have a 1/2" B&D version like that with 2 handles on it. got it for 10 bucks and it needed brushes. I bored holes in the timbers in my basement to run new circuits with it. I put a 2 foot long "nail eater" bit in it. I was laying in a crawl space laying on my back and drilling up and it lifted me off the ground. I cut a 1/2" extension bar off and used the drill and socket to start an old Gravely rope start convertible!
The 73 was completely original except the gas,oil, belts air filter and seat. He had every receipt and gave them all to me. 2 fuel pump kits were installed at some point but the tractor was basically untouched. He gave me a brand new spark plug for it and took out the original when I paid for it. It was 39 yrs. old and he wanted to keep it as a momento! I picked red for Marvin to go along with the paint scheme.
The Power King loader was built by copying Engineered Products drawings and the bucket is a scoop/hybrid.
The Jim Dandy's are a tad smaller than the PK's. They are way cool for mowing and FAST! A friend of mine had one but he sold it like he sells everything else. Moss grows on nothing at his house.
I cut a 1/2" extension bar off and used the drill and socket to start an old Gravely rope start convertible! 
Battery Charger-Maintainer
in What tool to use?
Posted
I got one of those cheap HF maintainers and put it on my Power King. The first time I went to start it after that I thought the motor was going to come out of the frame it was cranking so fast!