Plus
2 bank
Portable Power Tender Plus Charger
another model
I broke down and bought a Schumacher Maintainer. I probably paid too much for what I got but it does the job. I made a network of three lines so I can keep up the charge in two bikes and my rider lawn mower.
My son bought a couple of $9.99 Harbor Freight battery tenders. He plugs one in on each bike. He's been using them for three years without a problem.
I've got a plus.....works pretty well.
Might have to run by Harbor freight. Thanks JMBO.