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Anon Deleted Posts : Location : Status : Offline |
fridge current draw How much current does a fridge draw - or more importantly when running off a 12v supply from a leisure battery, how long would you expect the battery to last for? I'm completely discharging my massive leisure battery in around an hour or so but the fridge is hardly getting cold in that time (the element does feel slightly cold to touch), so suspect there is a fault in the fridge drawing too much current, but maybe the fridge just draws that much...?---------------------- |
 Wed 21 Aug 2013 @ 22:11
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bluebedouin Global Moderator Posts : 2444 Location : Northampton,England. Status : Offline 
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Middld wrote: How much current does a fridge draw - or more importantly when running off a 12v supply from a leisure battery, how long would you expect the battery to last for? ... Not sure of the figures but about an hour sounds reasonable!They're only really designed to run on 12 volt (maintaining the temperature) whilst the engine is running & alternator charging. ---------------------- |
Wed 21 Aug 2013 @ 22:27
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Anon Deleted Posts : Location : Status : Offline |
Fridge Hi Dave, I have a small lesure battery on my cf.If I leave the fridge on 12 volt it will pull the battery down in about 4 hrs.I think you should have the battery checked first,if thats ok then have the fridge checked.One hour to flatten a battery does seem a bit extrem.Cheers+Beers,Jim.---------------------- |
Wed 21 Aug 2013 @ 22:28
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Gethin Card Holder Posts : 462 Location : east lancs Status : Offline 
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the fridge will draw between 10a and 15a current from your battery. best use on gas when parked up . to get fridge down to a reasonable temp your best using it on 240v for 24hrs........ |
Wed 21 Aug 2013 @ 22:42
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Colin Birch Admin Posts : 4275 Location : Pontypridd, South Wales Status : Offline 
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What model fridge? Can you see the plate which gives the wattage of the fridge? If you can you can work out how much current it will draw. Watts = Volts x Amps so current draw in Amps = Watts / Volts so, if for example the fridge has a 120W rating it will be 120/12=10A The time it lasts will then depend on your battery. If you have a 60AH battery in theory it would last 6 hours. In reality it would last a lot less time as the battery would discharge to a level where it would be unusable well before then. Also if the battery is allowed to completely discharge it could lead to irrepairable damage to the battery. The element in the fridge should get hot and not cold. As Graham says, the 12V is really only for use when the engine is running. When camped up either gas or 230v should be used. ---------------------- |
Wed 21 Aug 2013 @ 22:50
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Anon Deleted Posts : Location : Status : Offline |
Thanks all. It's a two way, not three way, and i've never turned the gas on, only ever planned to use 12v, but based on info above, I guess that's not an option (I know I could have gone and done the calcs myself, but I knew one of you would know it off by heart. For info it's the original fridge that came with the 1973 Autosleeper. By the element getting hot, I mean the bit in the fridge, not the bit that gets hot on the outside. ---------------------- |
Thu 22 Aug 2013 @ 09:00
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