Dead batteries?

Discussion in 'Tech/Mech General' started by Road Runner, Jul 2, 2008.

  1. Road Runner

    Road Runner

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    I have 2 x 6 volt batteries wired positive to negative giving me 12 volts.

    Now the vehicle no longer has power to it all the time and my leisure batteries wont take a charge so are the batteries dead?

    Is there a voltage where you can tell the batteries are kaput?

    They are reading 7.3 volts:cry:
     
  2. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

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    Try putting them on a separate mains charger and pray, you might get lucky.
     
  3. Road Runner

    Road Runner

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    Thanks

    :pray::pray::pray::pray::pray::pray::pray:
     
  4. Wildman

    Wildman

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    long slow charge and check the electrolyte levels but from voltage suspect they are dead. tough luck. More damned expence.
     
  5. pappajohn

    pappajohn Funster Life Member

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    hi john,

    may be worth investing in a small solar panel for when you are in storage just to trickle charge.
     
  6. Road Runner

    Road Runner

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    Yupp was thinking of the maplin 13 amp siutcase one @ £49 would that be enough?
     
  7. Wildman

    Wildman

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    I think you meant 13 Watt, if its 13 amp for that price we all want a couple.:ROFLMAO::ROFLMAO::ROFLMAO:
    I have a couple of maplin 4.8w trickle charging my leisure batteries, the are kept well topped up without overcharging. about to add 36W for leisure and use the two smaller ones for keeping the engine and third leisure (laptop) battery charged. These fit flat on the roof. A suitcase is sufficient power but can you leave it safely secured all the time
     
  8. Road Runner

    Road Runner

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    I did mean Watt (its no my speciality electrical stuff that is:winky:)

    But i will remove it when travelling and where the bus is parked feel happy about leaving it there.

    I have a lafuma chair that cost twice the panels price and leave it out on campsites (funny how we suddenly trust the world with expencive accessories outside when were camping isn't it?:winky:)

    Thanks for the advice BTW:thumb:
     
    Last edited: Jul 2, 2008
  9. PeteH

    PeteH Funster

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    Batteries

    Hi

    silly question but is the 7.5 volts across TWO batteries or ONE?

    If across 2 they Yup probably dead. but 7.5 across 1 is a fully charged battery (in fact overcharged), any thing below about 12.5Volts on a standing 12V battery is below parr. so 6.2 (say) on a 6V would suggest it might be recoverable.

    I must look at solar charging seriously, as we may lose our hookup if the house sells and we have to store the r-v. (or better still live in it fulltime!!!)

    pete
     
  10. Road Runner

    Road Runner

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    With the two batteries so they sound deceased:cry:
     
  11. johnsandywhite

    johnsandywhite

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  12. Wildman

    Wildman

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    Maplins have been clearing solar panels at half price, too good to miss check out what they currently have. Stores are different stock options to the online dept so look around. Good luck, bargains to be had.
     

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