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Technical Battery Maintainers

Discussion in 'The Hokey Ass Message Board' started by jaw22w, May 27, 2020.

  1. Pats55
    Joined: Apr 29, 2013
    Posts: 413

    Pats55
    Member
    from NJ

     
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  2. Truck64
    Joined: Oct 18, 2015
    Posts: 4,145

    Truck64
    Member
    from Ioway

    A "trickle" charger to my mind is an unregulated charger, the kind that really needs to be on some kind of timer. An example are the 2/6 amp chargers Schumacher and Sears and Wards and everybody sold for years and years. Modern "smart" chargers have some kind protection circuitry or float voltage mechanism to prevent boiling out the electrolyte. Sometimes the terms "trickle" are used interchangeably. What kind of charger was it?

    I agree paranoia is a healthy thing when it comes to batteries. There is an awful lot of potential energy stored in them.

    I actually like the old school "dumb" chargers for re-charging, I think they do a better job of getting them completely charged up than the micro-amp maintainers like the BT. It takes a long time to recharge even a halfway depleted battery at low amperes and the BT will automagically switch to float charge before this process is complete, to avoid excessive outgassing.

    What it looks like to me from measuring charging voltages, the old school taper chargers were "sized" by way of their transformer, to top out at a certain range of end current and voltage for a typical automotive start battery. Since wintertime starting was the general problem they were kind of "tuned" for that situation. In zero wintertime temps, a battery has a high internal resistance and needs lots of juice to recharge, the charger could probably be left connected at 6 amps without hurting anything. Once things warm up though, the unregulated voltage will rise very high, 17 volts or more, and boil the battery dry.
     
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  3. Chappy444
    Joined: Jan 27, 2012
    Posts: 1,126

    Chappy444
    ALLIANCE MEMBER
    1. Maryland HAMBers

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  4. Blue One
    Joined: Feb 6, 2010
    Posts: 10,677

    Blue One
    ALLIANCE MEMBER
    from Alberta

    I have a dual battery tender and they work fine on my AGM batteries.
     
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  5. no55mad
    Joined: Dec 15, 2006
    Posts: 1,859

    no55mad
    ALLIANCE MEMBER

    Are the solar battery tenders still available? Some new cars used to come with them but only stayed in the cars during transport and storage, then removed before a sale.
     
  6. clunker
    Joined: Feb 23, 2011
    Posts: 1,613

    clunker
    ALLIANCE MEMBER
    from Boston MA
    1. MASSACHUSETTS HAMB

    I misspoke, it was in fact a “battery tender”. Made by Duracell. It wasn’t cheap. The smart kind you can leave attached to the battery indefinitely. I never did that though, I just disconnected it after the batteries were fully charged (multiple motorcycles and vehicles), so I would cycle it around, repeated a few times over the winter. It actually was connected for less than 8 hours, like over night. There was no fire, no dramatic scene, just a bunch of pieces of the top of the battery
    scattered around, I didn’t even notice until my arm started burning a bit from touching some of the acid on a surface. Kind of a mess to clean up.

    Not really a cautionary tale, I still use battery tenders, I think it was just a fluke. But I don’t really trust some gizmos. They work just fine until they don’t.




    Sent from my iPhone using The H.A.M.B. mobile app
     
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  7. 325w
    Joined: Feb 18, 2008
    Posts: 5,374

    325w
    ALLIANCE MEMBER
    from texas

    What he said. Never a problem with one of these.
     
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  8. Chappy444
    Joined: Jan 27, 2012
    Posts: 1,126

    Chappy444
    ALLIANCE MEMBER
    1. Maryland HAMBers

    See my post above... I think NAPA still sells them and I posted a link to them available on amazon... if those are the same "Solar" brand you are referring to.
    Chappy
     
  9. rosstom
    Joined: Dec 26, 2017
    Posts: 48

    rosstom
    Member

    I got a Deltran battery tender from 4wheelonline. I have had it for about 7 years now and never had a problem.
     
  10. Gearhead Graphics
    Joined: Oct 4, 2008
    Posts: 3,604

    Gearhead Graphics
    Member
    from Denver Co

    Yes, battery tender brand makes one ( i have one thats awesome) and theres lots of knockoffs. I love my BT brand, my neighbor saw it and got a knockoff... he still has to jump his car
     
  11. Maybe I'm the oddball, or maybe it's because I am too cheap, but I move my batteries around car to car every now and then to keep them from getting too stale, and to exercise them every now and then

    WHY BE ORDINARY ?
     
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  12. clunker, just curious what make the battery was. I have had two from Interstate give me problems. One swelled up to the point of bending the hold down bracket. This happened quite some time ago though.
     
  13. 73RR
    Joined: Jan 29, 2007
    Posts: 6,398

    73RR
    Member

    Another vote for the HFT unit. I have 4 of them working right now and no issues with dead batteries.

    .
     
  14. BigDogSS
    Joined: Jan 8, 2009
    Posts: 860

    BigDogSS
    Member
    from SoCal

    I agree. I never leave any kind of battery charger on a battery 24/7. My battery issues went way down since I started plugging my "smart charger" into a simple timer. After the battery is fully charged, I plug my smart charger to a timer. I set the timer to run the battery charger for 1 hour per day. Done.
     
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  15. Truck64
    Joined: Oct 18, 2015
    Posts: 4,145

    Truck64
    Member
    from Ioway

    What I've read, is "stationary" lead-acid batteries - used for dedicated backup and the phone company and things like that have an expected life span of about 20 years. These are kept charged (I guess) and away from heat, and vibration.

    Nobody's gonna get 20 years out of a car battery but only 2 or 3 years isn't acceptable either. Maybe it's a matter of neglect. Different ways of approaching things depending on philosophy, safety, or maybe wallet. Some guys are perfectly fine with buying junkyard batts at $20 per.
     
  16. clunker
    Joined: Feb 23, 2011
    Posts: 1,613

    clunker
    ALLIANCE MEMBER
    from Boston MA
    1. MASSACHUSETTS HAMB

    That can’t be good. Duralast, but I’ve had good luck with Interstate in the past.


    Sent from my iPhone using The H.A.M.B. mobile app
     
  17. Dusty roads
    Joined: Nov 29, 2016
    Posts: 139

    Dusty roads
    Member

    Battery Tender Plus for 2 vehicles with Odyssey batteries for over 10 years with no problems.

    Odyssey Battery.JPG
     
  18. indyjps
    Joined: Feb 21, 2007
    Posts: 3,935

    indyjps
    Member

    Lightning - read up on lightning rods, you may want to install one if you get that much action. The ground rod for your electrical service is not a necessarily a lightning rod.
    Depending on your soil type and and moisture level the minimum code electrical ground rod may not be as effective as needed.

     
  19. indyjps
    Joined: Feb 21, 2007
    Posts: 3,935

    indyjps
    Member

    Deltrans - readily available, my buddy who manages a vehicle and equipment fleet said they work great. I now own several. Have a few harbor freight tenders that get used for small equipment.

    After having trouble with new chargers failing in a short amount of time, I only buy schumacher now.
    I actually try to buy old chargers from farm or estate sales, if I can find one without a computer, Im happy.
    Have a 2 extra chargers solely for electrolysis derust.
     
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