You'll have to excuse my ignorance and I searched the caravan manual and it didn't tell me.
I hooked the caravan up to the electrics at home yesterday to make sure they worked (I can't afford to have it serviced straight away so am not going to connect the gas at all) and only two of the lights came on. When I found a battery switch on the wall and turned that on the rest of them worked. Why is this? I have no idea how good the battery is so am worried it will go flat and I will lose most of my lights. Does the battery charge when the EHU is connected?
I apologise again for being so wet behind the ears. I don't want to keep bothering the guy I bought the caravan from, I'm saving him for emergencies lol!
If your mains lights carry on working and your 12 volt lights work when you've hit the switch, then you switched the inverter on (which transforms mains to 12 volts) so long as the inverter is working it won't flatten the battery, you can monitor it by watching to see if the battery condition indicator show a decreasing charge, if so then the inverter is faulty (not unusual esp on swift vans)
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Usually most are 12v and work from the battery. I only have 12v lights in my van (mind you it is a 1982 model!!) I have EHU and run a small table lamp through the 3 pin plug when connected. You will find your 12v water pump if you have one works from the 12v battery connection as well.
If you disconnect the EHU and then try the 12v lights and they don't work, then you need to charge the battery. Having the EHU on completes the circuit, so everything will work, even if the battery is on a very low charge, the EHU just works through it.
So you don't need to be worried about lights when on EHu!
It's a transformer, or more likely a battery charger that supplies the 12 volts when on EHU. An inverter converts 12 volts to 240 volts. Many parts of the caravan are 12 volt, including most of the lights, water pump, the ignition for the water heater and the cooker igniter.
If you`re only ever using the electric hook up, then you don`t even need a battery. Just isolate the connections , , , ,the transformer/powerbox does the rest.
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The battery is definitely flat. I went in and tried the 12v stuff and nothing. I know we won't need it as we'll never go anywhere we can't hook up but will it charge up itself when we are hooked up anyway?
Some vans have a couple of mains lights, usually one either side at the front, the rest are 12V. We had a couple of vans like that. Current van has all 12V.
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A friendly local garage should be able to supply a used car battery cheaply or a scrap yard .just make sure you keep it charged,once they fall below 11 volts there useless
Quote: Originally posted by Babyfish on 11/7/2013
The battery is definitely flat. I went in and tried the 12v stuff and nothing. I know we won't need it as we'll never go anywhere we can't hook up but will it charge up itself when we are hooked up anyway?
If it's dead flat, the answer is no, I'm afraid! You can try charging it with a battery charger though. Some recover well from a low charge, others don't.
You need a replacement really, I would suggest a new leisure battery at some point. However, if the 230v is working ok through it and the water pump is working, then if using EHU you will be ok with the one you have. My sis had a duff l.battery for 3 years but always had EHU and everything worked ok.
It all seems to work although I haven't tried the water pump yet. That needs to be played with tomorrow as the caravan is going into storage on Sunday. I shall add new battery to the growing list of things I need. My 'cheap' caravan is proving not to be so cheap lol!