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Subject Topic: Battery, Inverter, Cool box Post Reply Post New Topic
Message posted by sunnydays0823/7/2008 at 8:19am
Outfit:  Rage Harsteaad      Location:  West Sussex Hampshire
Joined: 10/7/2008
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Sorry folks, I need to get this straight in my head and at the moment its as clear as mud in there.!!

I'm the practical one, yet this is something I am unable to get my head round, some of you will undoubtedly look skyward and say its a woman thing!

we have bought a 12v cool box which plugs into the cig socket in the car, no problem there as long as the car is running.

We have a 12v  leisure battery and at home we have a bettery charger.

We are staying at the weekend on a field no ehu (Friday - Sunday)

With a power inverter attached to the battery will this run my cool box and my radio?

As we are totally on our own, no houses or people to disturb would we be better with a small petrol generator?

Looked at solar power thread and for this year its too much as we have only just started

If the battery ends up totally flat will our charger at home be enough to bring it back to fully charged?

Thanks in advance of any posts


Message posted by Sam Coleridge23/7/2008 at 9:01am
Outfit:  Khyam XL Excelsior 2007     Location:  Somerset
Joined: 08/9/2007
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You don't need an invertor if you have a 12 volt fridge and a 12 volt battery, but the fridge takes about 4 amps, so your 110AH leisure battery, cautiously derated to 85AH is going to power it for only 20 hours... it may be a good idea to use some sort of timer or thermostat.

Message posted by thistledew23/7/2008 at 9:50pm
Outfit:  LWB Transit Highlander conversion     Location:  Scottish Borders
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Hi Sunnydays08

You don`t mention the amp Hr rating of your battery, but which ever size it is you will not have sufficient power to power your cool box for any length of continuous running.

Do you have additional equipment which requires a power inverter? These ingenious bits of kit are designed to produce 240 volts from 12 volts but they flatten batteries in minutes if not being charged from a vehicle.

Could it be that you are confusing a battery eliminator with a power inverter. The eliminator will reduce 240 volts to 12 to run the cool box from the mains.

I occaisionally use a small generator when appropriate to charge the leisure battery via an automatic battery charger. but realistically very rarely have recourse to it.

You can use a set up in your car to charge the leisure battery via an isolating relay,when the engine is running.

David



-------------
Life is not a journey to the grave intending to arrive in a pretty, pristine body but rather to come sliding in sideways, all used up and exclaiming, "Wow, what a ride!"

Message posted by oldham23/7/2008 at 10:40pm
Outfit:  KYHAM XXL Sterling Eccles Emerald     Location:  OLDHAM
Joined: 20/8/2006
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Fridge will flatten the battery but for lights and charging small items Phones etc. it will be fine if used as 12 volt and you need on of these.212

http://www.tsw-comsat-sales.co.uk/index.php?act=viewProd&productId=36

Inverters take power to work so if possible avoid them.

For a weekend the frozen 1 litre pop bottles should be enough to keep cool box cool.

Beer in a bucket of water works as well 

Had a genny when we had a boat and it will eventually get on your nerves also you will not want it running all night. 

 



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