Dashboard batterie chargers

Discussion in 'Tech/Mech General' started by kennygd, Jul 23, 2010.

  1. kennygd

    kennygd Read Only Funster

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    :Smile: Anyone seen these small battery chargers that plug in the cigarette lighter and keeps the batteries charged all the time ?
    kennygd
     
  2. slobadoberbob

    slobadoberbob Read Only Funster

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    Not a lot of use

    Yes I for my sins have one. Not a lot of use, may be it is because I have a window screen cover on!:Rofl1: - seriously they do not put enough juice into the system. It is a bit like the ones you see on mobility scooters, a waste of time as they do not put enough in to make a differance. You need a big solar panel to have any effect and I am sure you can find many articles about this in the past MMM issues or on this site. But my view is save your money.
     
  3. scotjimland

    scotjimland Funster Life Member

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    Depends on the size.. the very small ones are a waste of time..

    however, a decent size one should keep a fully charged battery healthy and help offset the parasitic loads of the vehicle alarm, radio memory etc.

    point to note , and it might be obvious , but the ciggy lighter has to be 'live' with the ignition off .. otherwise you need to use flying leads with croc clips onto the battery.
     
  4. paulmold

    paulmold Read Only Funster

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    I've got two of these small solar chargers, a 2.4watt which is small enough to take with me when away from home and I use it if not going off site for 2 or 3 days, and a 4.8 watt one which I leave on the dashboard at home. Without it my engine battery will die in around 10 days but with it the battery stays fully charged and starts engine after anything up to 4 weeks.
     
  5. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

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    Think you mean these Caravan Motorhome Solar Panel Battery Charger 12v

    They work quite well but the cigarette lighter must be live or use the croc clips direct to battery.

    Peter
     
  6. Snowbird

    Snowbird Funster Life Member

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    Dont know if am just lucky but I have one on the RV to keep the engine battery up and that sits for months somtimes. Never had a problem starting it yet.
    Bought2 for 20 Euros and use one for the engine and one wired to a fan on the fridge,to help keep fridge cool without taking juice from the leasure batterys.
     
  7. pappajohn

    pappajohn Funster Life Member

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    does that work ok Dave ?

    it may be low output due to its size but the voltage is still unregulated.
     
  8. Snowbird

    Snowbird Funster Life Member

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    Works fine John,it only works when the sun is shining which is when you want a bit of help with the fridge,got the idea from the one that was fitted on the roof vent from new,that only works when its hot too.Just goes a bit slower when the sun goes in.
     
  9. errpaul

    errpaul Funster

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  10. pappajohn

    pappajohn Funster Life Member

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    stick the fag lighter in with the ignition off...if it gets hot its live :thumb:

    failing a fag lighter try a mobile phone 'in car' charger or a sat nav
     
  11. errpaul

    errpaul Funster

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    That's great, thanks
     
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