UNfortunately, with all the excessive electronics in our new vehicles, it is blatantly obvious the a majority of the electrical gremlins we deal with are caused by low voltage situations. Harvest, I would have to say if you drive your vehicle only weekly, or locally with lots of things on like cranked stereos (all have big watt rms now which sucks power), seat heaters, defrosters.........you will want to put it on a tender. Daily or every 2 -3 day drivers are fine. It's cars that sit a week or more. All of my newer vehicles except my Miata (no crap electronics ) , are tendered. My 3 Lotus needed them (2005,2010,2011), my 2 BMW's needed them (2008,2011), my Stelvio does, my Maserati does, my Range Rover does....I have never had a battery fail WITH A premature failure., The only dead battery I had was on a BMW that was going on 6yrs old. Most of my batteries lasted as long as I had the vehicle (up to ~8yrs). What am I doing differently???? BATTERY TENDER!!!!
I have 500mV models for my Lithium batteries or long term storage. You know you have a partially discharged battery when a 1amp charger runs overnight before going into trickle mode. I see this on EVERY vehicle if it hasn't been charged for a week or more. Everyone wants all the tech in their cars....it ALL takes power and unless the vehicle drives for 30-60 minutes, it does not top up a battery sufficiently ESPECIALLY in the winter. With Deltran quick connects properly mounted , it takes 15 seconds to plug in. Alfa is so well positioned , I didn't even bother, just use alligator clips...takes 20 seconds. BTW no electrical gremlins on my Alfa....wonder why???
2018 Alfa Romeo Stelvio TiSport EC Phase 2 w/V2 intake, Remus Catback ~390HP / 442ft-lb Tq Visconti Verde, Chocolate Interior, Quadrofoglio wheels w/PZ4's
2016 Maserati GranTurismo Sport Custom blue tone, Grigio chrono leather w/full interior MC Carbon Fiber trim, NA 4.7L Ferrari V8, stock...for now
2016 Range Rover Sport HSE 3.0SC tuned by ETG 456HP/414Tq, Montalcino Red, Ivory
2012 Maxda MX5 Miata GTPRHT True Red, Black
2011 Lotus Evora S Persian Blue,Black Suedetex (Track specialist)