I've had a Deltran Battery Tender Plus for years and use it to maintain my show car's battery over the winter. I got it when this was the only well-known and highly respected unit and it has served me well. It maintained the last battery for over 13 years, instead of dying over the winter. Since then there have been many other brands claiming to do the same thing, some costing half the price or less. I've also since bought a couple Battery Tender Juniors, the first a heavy one with a transformer like the old BT+ and later a newer all solid state one as technology evolved. I used these for lawn equipment and a car with a parasitic draw we could not locate. I just bought a MOTOPOWER MP00205A 12V 800mA Fully Automatic Battery Charger/Maintainer off Amazon for half the price I'd pay for a BT Jr because I could not find my others and needed to winterize my riding mower. Checking it out, I see it outputs the same maintaining voltage as my BT+, so I'm happy. With the amount of reverse engineering in electronic devices today, anything is possible. Time will tell.
So my question is, what experiences, good or bad, recommendations, have youall had with different battery maintainers?
So my question is, what experiences, good or bad, recommendations, have youall had with different battery maintainers?