Helppppppp Papajohn or anyone please

Discussion in 'Tech/Mech General' started by Munchie, Sep 17, 2014.

  1. Munchie

    Munchie Funster Life Member

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    Ok not major problem but......

    My batteries charge on solar or hook up to 14.3 amp.
    When off hook up they slowly run down at what i would think at a normal rate.
    Till they get to 12.8 then they suddenly crash to 11.1!!!!
    I presume i need new batteries?
     
  2. jonandshell

    jonandshell

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    Yes!
     
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  3. ukbill

    ukbill Funster Life Member

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    yep
     
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  4. Munchie

    Munchie Funster Life Member

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    Thought so, just checking!
     
  5. DavidG58

    DavidG58 Funster

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    sounds like you have more than one battery, my bet is one has failed, you probably only need to identify and replace that one (y)

    I know this because I bought 2 for mine, then found I only needed one :doh:

    I was amazed that one failed battery can so badly affect the total voltage
     
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  6. Munchie

    Munchie Funster Life Member

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    Yep I have two 100amp batts.
     
  7. Hollyberry

    Hollyberry Funster Life Member

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    How do you find out if it's just one that's failing and which one?
     
  8. DavidG58

    DavidG58 Funster

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    turn off the charger, disconnect batteries from each other then check the voltage with a meter

    or you could use your controller for an indication of voltage if you don't have a meter, just connect one at a time

    (y)
     
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  9. Munchie

    Munchie Funster Life Member

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    As they are both the same age I will replace them both so as not to end up in the same situation further down the road.
    But thank you!
     
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  10. DavidG58

    DavidG58 Funster

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    mine are gel batteries and over £200 each, one would have done nicely at the time :D

    but at least they are both guaranteed now (y)
     
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  11. scotjimland

    scotjimland Funster Life Member

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    That is the best plan..

    ideally, batteries or cells in banks should be

    * same make
    * same capacity
    * same age

    The pedantic will even try to buy with consecutive serial numbers so they are as near identical as possible..
     

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