Inverter

Discussion in 'Motorhome Chat' started by Loujess, Jun 24, 2013.

  1. Loujess

    Loujess Read Only Funster

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    We just bought one from Lidl this afternoon. 300w with a battery connection and a cigar lighter connection for £24.99. Is this ok to use or is it a bit too powerful and will drain the battery quickly? Our last one was 150w but didn't last 5 minutes.:BigGrin: Also, would it harm my gadgets if we recharge whilst driving? Iphone, laptop, kindle etc :BigGrin:

    Ivy
     
  2. tonka

    tonka Funster Life Member

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    Although it's 300 watts, you will only draw the power that you plug into it..

    Example.. Our mains only LED TV draws 20watts... So I use an inverter and the drain is...
    20watts... But these inverters are not efficient and you have to factor in power loss for it's use. Lets say the Inverter is 90% efficient so you loose 10%..
    20 watts plus 10% (2) = 22 watts...
    Having to large an inverter when you know you are using small power items can be a waste of power and money..

    NOW.. !! This issue is that if you try to draw the max 300 watts you may find that your cigarette socket is NOT rated that high, some are only 100 or 150w max.. So if you plan to draw a higher power you need to connect direct to the battery...

    Be aware that high power devises may run ok from an inverter but will drain the battery,,
    If you used it to capacity of 300watts divide that by 12v = 25 AMPS !!! You battery wont last to long....

    Make sense ?????

    The best thing for iphone and ipads etc are the Griffin USB chargers,,, Work great,
    http://www.ebay.co.uk/itm/GRIFFIN-D...ories_MobilePhoneChargers&hash=item3a824ae796
     
    Last edited: Jun 24, 2013
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  3. G8WVW

    G8WVW Read Only Funster

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    Certainly your cigarette lighter socket is unlike to deliver 300W. Sockets often fused at 10-Amps which is 120W beyond this you really need to hard-wire the inverter to the battery.

    Personally think 3-Amps is too much for many cigarette plug/sockets! They're rubbish!
     
  4. Addie

    Addie Trader - Motorhome Wifi

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    I wouldn't use an inverter where there is a low voltage optional available.

    Kindle and iPhone will both charge from a cigarette to USB converter - so don't use an inverter, its pointless going from 12v -> 240v - > 5v!

    Likewise with a laptop - plenty of 12v laptop chargers available, either multi-voltage or fixed to go from 12v -> 19v in one go.
     
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  5. Bailey58

    Bailey58 Funster Life Member

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    Used our 300w inverter to run the Sky box over the past 3 weeks, ok half the time we were on a hook up anyway but we were off mains for 5 and 6 nights in a row in that period and the tv was on 12v too as was lights and pump of course, with a drive most days and the solar panel we had no problems.
     
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  6. Loujess

    Loujess Read Only Funster

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    Ha ha - love your avatar pic. I'm sure I know those people.

    Looks like this inverter needs to go back then. One problem is that my kindle takes hours to charge and takes up the cigar lighter space. In fact it doesn't really hold a charge for too long. I use it to play sudoku and read mainly. I'll have a re-think. :BigGrin:

    Ivy
     
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  7. Loujess

    Loujess Read Only Funster

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  8. TheBig1

    TheBig1 Funster Life Member

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  9. Loujess

    Loujess Read Only Funster

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    Got it. Thanks. :BigGrin:

    Ivy
     
  10. Ed Excel

    Ed Excel Funster

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    If you're running out of sockets to use you need one of these:
    http://item.mobileweb.ebay.co.uk/viewitem?itemId=310684348288&index=2&nav=SEARCH&nid=87644831668

    Some also have USB and 12V outlets.

    If you do use the 300W inverter just be aware connecting 300W loads to it will draw slightly over 30A.
     
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