I would be nervous putting mine on a charger, I would probably
look it up online and see what the manufacturer said first. I charge
stuff outside anyway, so it probably wouldn't burn down my house
anyway. It might be the case that properly used battery tenders
burned down Britman's house and Deten8r's bike shed, if they
see this maybe they'll say for sure. About the only thing I ever
charge anyway is the 6-volt in my Ford 8N... I haven't turned it
on since June or so, what with the drought, I bet it will need
charged in the spring. Since I live in South Carolina, and get
to ride regularly (I rode the 1500 yesterday) there's probably
something wrong with my battery or alternator if I need to
charge...
Could afford to buy one every few years and still save.That's true... I didn't get mine to save, it cost more than the
other one the Advance guy put up on the counter top. It is
tiny and lightweight and I wanted to see how it would do.
Maybe it will last a long time, or maybe it will go off like
one of those vape machines next time I go for a ride...

-Mike