I buy the Battery Minder, not the Tender. The Battery Minder sends an High Frequency signal to break up the sulphates on the plates of the battery. I can hook up a maximum of 6 batteries to one small tender by using alligator clip wires. My batteries last a minimum of 7 years, some up to 10. https://www.northerntool.com/shop/tools/product_200332201_200332201 You can catch them on sale at time at Northern Tool for around $25 each.
Its not the car that matters but the type of battery. For regular lead acid batteries I have the small Junior Tender. It plugs in at the box and has long cables to reach the car. It is a smart unit so it will not over charge. They will NOT charge a dead battery so you need to bring it up with a regular charger if that is the case. I have two and like them. https://www.summitracing.com/parts/dtn-021-0123 https://www.walmart.com/ip/Deltran-...G2YMPSMieu_RJPmtKZn_uUZxMrzy2ZmoaAgtVEALw_wcB Like Brad said, they do go on sale so shop around.
I have 4 or 5 of the battery tender juniors I use on various things. I finally had my green car battery fail not long ago, it was 7 years old and had been kept in the barn it's whole life through Ohio summers and winters. I also use them on some power equipment and they seem to work well.
I love my units from NOCO https://www.amazon.com/NOCO-GENIUS1...ry+chargers&qid=1595101730&sr=8-8&tag=mh0b-20 never a problem.
I have a NOCO Genius. It does everything my battery needs it to do and keeps it healthy. Everyone has their preference; I’d suggest doing your own research to decide which one will meet your current (no pun intended) and future needs.
I have a couple Tenders and a Ctek. I really like the Ctek, but it's expensive. The battery tenders are outdated and not the best on a AGM battery.
I've saved many a battery with my Battery Minder. The battery in my Turbo Trans Am ia 14 years old. Here's the one I have: https://www.ebay.com/itm/BatteryMIN...-Desulfator-System-12-V-2-4-8-A/402307771908?
Since I could not remember the battery size I replaced the orginal Delco one with in 2016. I mentioned the car, most take a standard size and standard cold cranking amps. Although I belive I up graded it. I have never needed a tender before but this year with the Buick in total storage. inside and covered I figured I should do some thing with the battery. Thanks for the replys, I will research your suggestions. Al
I have several Harbor freight Viking 4A microprocessor controlled battery charger / maintainer About $38 before coupon.. I have had them a few years and seem to work..
I've got a couple of Battery Tenders but also a BatteryMinder that I use on batteries displaying hints of sulfation. Brad Conley mentioned that device. You can get the unit that does, flooded, AGM, and Gel batteries. I actually bought the thing years ago when I hurt an Optima battery. The Minder actually brought the battery back to life and it went another five years. If you have batteries that see no use for weeks at a time the Minder is a great tool for reconditioning.
