John,
BEST BANG FOR THE BUCK .....In my opinion is a "BATTERY TENDER" for your toys, camper,tractor,mower etc.
Over the yrs I also just accepted the fact that in the spring somethin would have a dead battery until I got my Bass boat with its on board chargers ...heck the batts last forever! as long as ya service the fluid level with distilled water.
So over the last few yrs I purchsed Battery Tenders for ALL my stuff from my Motorcycles to mowers and my 52 ...and I havent bought a battery in a many yrs.
I have a 2 bank on the wall that takes care of the bikes, and singles for my mower and 52 ...when I am done with any of them for any length of time I just plug em in ...an WHALLA they are always good to go.
Taking care of the batts in your toys and home maintainers is the BEST BANG you will ever get.
just my 2 pennies.
Tim
P.S. I buy Exide batts. good bud has a battery store and I buy local.
It's not always about the charge of the battery, but about the out gassing that wet cell batteries do. That gas and there is a lot of it causes rust. Also when the battery spills and if the battery is maintained it will that too(two, to your choice) also causes rust.
That's why they provide the tube from the top of the battery. I have seen to many restored cars, with rust around the batteries. I also had the experience in another freshly restored car where the battery was between the heater box and the fire wall. Yup it spilled all over the place. It was at that moment that it was not about the money but about the work.