Charging battery up to what V is ok.





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  1. #1
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    Default Charging battery up to what V is ok.

    When charging a 12V 105 battery from mains with a car battery charger up to what volts is is still safe. ?

    Mainly used it in my vehicle but now with loadshedding i moved it into the house so we can use it with an inverter to run a tv and light or two

    Reason I ask is I see the volts go up to just over 14V. (Battery is in box that have Volt meter build in.

    Is this ok or should I have the battery charger checked out.
    .

  2. #2
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    Default Re: Charging battery up to what V is ok.

    Would help if actual battery details are known.
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  3. #3
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    Default Re: Charging battery up to what V is ok.

    Quote Originally Posted by Prof View Post
    Would help if actual battery details are known.
    Varta 105A


    Last edited by johan65; 2019/03/24 at 07:08 PM.

  4. #4
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    Default Re: Charging battery up to what V is ok.

    Actual charts or specs for these are hard to find.

    This Ilink found on another forum ...for the LSF105 battery

    http://jci_media.s3.amazonaws.com/va...nal_150x75.pdf

    Seems 14.4V is limit to go to.

    Float charge @ 13.4V
    Last edited by Prof; 2019/03/24 at 07:47 PM.
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  5. #5
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    Default Re: Charging battery up to what V is ok.

    With an intelligent charger going up to 14.7V is fine but then trickle or float at 13.6V.

  6. #6
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    Default Re: Charging battery up to what V is ok.

    Thank you kindly.
    The charger i am using is national luna.

  7. #7
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    Default Re: Charging battery up to what V is ok.

    Quote Originally Posted by Prof View Post
    Actual charts or specs for these are hard to find.

    This Ilink found on another forum ...for the LSF105 battery

    http://jci_media.s3.amazonaws.com/va...nal_150x75.pdf

    Seems 14.4V is limit to go to.

    Float charge @ 13.4V
    Dankie prof

  8. #8
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    Default Re: Charging battery up to what V is ok.

    Quote Originally Posted by ekkekan View Post
    With an intelligent charger going up to 14.7V is fine but then trickle or float at 13.6V.
    Make that 13.5V as battery float voltage in our hot climate..

  9. #9
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    Default Re: Charging battery up to what V is ok.

    Quote Originally Posted by Richard Mackay View Post
    Make that 13.5V as battery float voltage in our hot climate..
    Richard you are right but the figures I mentioned are values from some commercial chargers and not adjustable. I found a charger that would also keeps a battery at 14.6V but constantly discharging a bit and that does not introduce gassing as one would normally think will happen at a constant 14.6V.
    Last edited by ekkekan; 2019/03/24 at 11:20 PM.

  10. #10
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    Default Re: Charging battery up to what V is ok.

    Just something to keep in mind. That "up to 200 cycles" is the reason why conventional batteries are not ideal for an inverter backup system.

    If you plan on using it often, you should seriously consider going good quality deep cycle. 3000 cycles capability is not uncommon.

    With the way eksdom is going lately 200 cycles is not much.
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