battery tender, good or BAD?

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  1. 69redrunner

    69redrunner Well-Known Member

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    I have one and use it during the cold northern winter months.
    I don't leave it on any battery for more than a day or two at a time.
    I cycle it through all my summer/ limited use stuff about one every 4 to 6 weeks. I think it helps to top off the charge and it also warms the battery.
    Never had any adverse conditions that I could trace back to a battery tender.
     
  2. MarPar

    MarPar MeatMan FBBO Gold Member

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    i've got that exact same one, and have had it for 4 years now, and no problems. I leave it on all the time on the GTx'er and it's never failed me. best $50 bucks ive spent.
     
  3. satman72

    satman72 Well-Known Member

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    I bought one back in '94 when I got my Harley. Every winter once the bike was put away the battery tender was hooked up and stayed that way until March. I never had a problem. I just wrecked it this past spring on a bad car battery.
     
  4. shag766

    shag766 FBBO Gold Member FBBO Gold Member

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    ron i use 3-4 of them over the winter and no problems. they are quite reasonably priced now. on sale around here you will pay 30-40.00 bucks and that adds up to 1/2 a battery price, 1/4 of a good one. rick
     
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    • Sonny Black

      Sonny Black FBBO Gold Member FBBO Gold Member

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      Well, sonny will use the B T this year (winter)...my new one works fine, Got it on sale....cheap about $25.bucks.
       
    • 41husk

      41husk Well-Known Member

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      I have four battery tenders. I keep a charge on all my cars any time they are parked. I have had one battery for well over 5 years with no issues.
       
    • soundhd

      soundhd Well-Known Member

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      I have & use about 7-8 of them (have them on 4 classics, two tractors, house back-up generator and on a newer PU that I is not my daily driver)...both the regular & junior type......have used them for about 10 years....no problems yet.......really like the battery harness.....don't need to open the hood to connect.....just hook em' up and leave......
       
    • D575

      D575 Well-Known Member

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      I use them for my motor home, Bass boat and car. A battery that sits tends to sulfate, http://www.boatelectric.com/sulfation.htm

      I'm kinda of ashamed to admit after reading all the fancy name brands that you guys are using, I Just buy cheap ones from Harbor Freight about $10.00 never had an issue . Haven't had to buy a battery in years.

      image_20349.jpg
       
    • Moparsmitty

      Moparsmitty Well-Known Member

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      I've used a couple of NAPA 85-201 automatic chargers for a long time and they have worked great. I have used one on my Prowler since it was new and I just had to replace the original Mopar battery this summer. Not too bad for a battery to go 13 years in a car that isn't driven very often. Any battery guy will tell you that a fully charged (not overcharged) battery will last a lot longer than one that is cycled (discharged and recharged) all the time.
       
    • snakeoil24

      snakeoil24 FBBO Gold Member FBBO Gold Member

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      Battery tenders are good! Auto Restorer Magazine did a review on these units and you can expect your battery to last 30 percent longer if you use one.
       
    • kdtjb

      kdtjb Well-Known Member

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      I have the B.T. plus, I rotate it from car to car. I have had it for years, and haven't lost a battery over winter since i got it. I use to lose one about every other year before. I have 13 cars in the coop for our long winters here.
      Just a bit south of West Yellowstone, Mt.
       
    • snakeoil24

      snakeoil24 FBBO Gold Member FBBO Gold Member

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      Wet cell batteries get contaminated with sulfur by products that fouls the plates. Computer batteries like lithium or nicad dont respond to full charges unless they are fully exhausted. I read that they only have limited re charge cycles. "memory"
       
    • eric383

      eric383 Well-Known Member

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      You are correct snakeoil on the difference in batteries. Some of the newer battery chargers/maintainers have a desulfate option built into them to extend battery life further. Technology moves on.
       
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      • tallhair

        tallhair Rufus "Mod-hair" Firefly Staff Member

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        cool idea
         
      • 451Mopar

        451Mopar Well-Known Member

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        The Battery Tender Plus has a 1.25 Amp output, the Junior is rated at 0.75 Amp if that matters to anyone.
        I have the Batter Tender 4-Bank charger and it has been working great, but I've only had it for about a year.
        Bought it from Amazon for about $150. The cables on it are fairly heavy duty. Bought the extention cables so I could have it charge multiple vehicles at once.
         
      • D575

        D575 Well-Known Member

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        Since this post in 2012, I still haven't had to buy a battery.
         
      • krowbar

        krowbar Well-Known Member

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        I've got one like this also. Haven't used it much,but when I do it seems to work fine. Bought mine for $5 at Harbor Freight.
         
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