Multiple battyer tender?

Discussion in 'Equipment' started by kentnothstine, Oct 5, 2012.

  1. kentnothstine

    kentnothstine Been here awhile

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    What is the best system to charge multiple batteries while still in the bike? I have 4 I want to be able to put on a tender for the winter. What do you guys use, I am looking on the cheap side but I don't want to move the tender. I plan on packing the bikes close together to keep the garage clear... ish.

    Thanks
    Kent
    #1
  2. Reddog*

    Reddog* Gone

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    Hook the batteries in parallel using jumper wires and use one battery tender.

    That said you will need to check that all the batteries when fully charged have the same voltage reading. Other wise the weakest one will draw the rest down to its level, shorting the life on the other three.

    In reality using four battery tenders will be easier.
    #2
  3. kentnothstine

    kentnothstine Been here awhile

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    #3
  4. squish

    squish Out of the office.

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    I just have mine on a retractable cord dangling from the ceiling, with the long cord and pigtail leads on the bikes
    I move it from bike to bike after a couple days of being on the charger.
    I'm not a fan of super long term battery tender use, I tend to use it for no more then a couple of weeks at a time.
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  5. yukonjon

    yukonjon Been here awhile

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  6. kentnothstine

    kentnothstine Been here awhile

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  7. Reddog*

    Reddog* Gone

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    That is what I use all winter in an unheated garage on my Aprilia.
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  8. mikesova

    mikesova Michigander

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    Or, you could charge one of the batteries one day, charge one the next day, charge the other, the day after that, and then the last one, the day after that. Do it again in a month. Preferably out of the bikes, in your basement, since your garage isn't heated. :deal
    #8
  9. jules083

    jules083 Long timer

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    I have killed a few batteries with battery tenders. I've never heard of this happening to anyone else, ever, so I'm not too sure what went wrong.

    Here's the long story of how it happened, if anyone can make sense of what went wrong be my guest. Skip over this if you don't want to read a story:

    ZX-14, killed 3 batteries. Road King, killed 2. GSX-R 600, Aprilia Mille, and ATV killed one each. Every one of these instances the batteries were put on a tender at all times, and they didn't last over a year. The ninja was the worst, killed a battery every 6 to 8 months. I used the same tenders as my dad, actually we switched tenders a few times thinking that may be the problem. I quit using tenders and haven't had a battery problem since. He still uses them, and hasn't had a problem. :huh

    What I do now, is nothing. When I park the bike for the winter I act like they don't even have batteries. Next spring when it's time to ride I start them and ride away. The ATV gets ridden all winter, the rest of them just sit in the garage waiting for a warm day.
    #9
  10. kobudo28

    kobudo28 Banned

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  11. bob393

    bob393 Been here awhile

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    I think most of us use these. I have 4 also one for the tractor, one for each bike, and one for the generator. I also have the next larger model for the truck. Love them! :clap
    #11
  12. SnowMule

    SnowMule [angry moth noises]

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    My suggestions are already mentioned here...

    they make the multiple-output chargers, linked above. $$ though, designed for bigger vehicle batteries.

    Or get a handful of the Batt Tender Jr's and a power strip, mount to the wall/ceiling. The cables are plenty long enough.
    #12
  13. kobudo28

    kobudo28 Banned

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    I didn't go with the Jr version, I went with the bigger version of the Battery Tender. One for the bike, one for the Kubota and one for the S2. I've had zero problems.
    #13
  14. SnowMule

    SnowMule [angry moth noises]

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    I've got the bigger 5-amp charger/tender on my trailer's battery. Works great, but it's about $100.

    [​IMG]
    #14
  15. jon_l

    jon_l Long timer

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    Was your issue with the genuine Deltran Battery Tender? Or a generic trickle charger?

    I have never heard of issues with the genuine article. To have 4 issues in one garage is bizarre.

    #15
  16. kentnothstine

    kentnothstine Been here awhile

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    Good stuff, I haven't picked anything up yet so keep it coming.

    Thanks kent
    #16
  17. PMC

    PMC riding rider

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    I've got one of the Deltran 4 pack tenders and it works great. Only issue that cropped up after about a year was one of the banks died, not a big deal as I only use 3 of them anyway.
    I give it 1.5 thumbs up but would give 2 if the fourth bank didn't die.
    #17