Is my battery dead

Posted on 18/08/2022 08:50 by Rufs

well not a tech head, but on my 2008 coachman there is a volt meter built into the control panel, when the ehu is disconnected it reads 12v, you have to have the master switch in the on position, when i switch on the ehu it reads 12.5v, never seen it any different since buying the van not even when i put a new battery on when i replaced the mover, however, is this post a wind up ???

"So this leads me to believe that when I found the fridge set to battery I panicked a little and got confused with the switches. It was getting dark and I did not have a torch at the time"

why did he not switch on the 12v caravan lights ???

seems when he first checked the voltage he did not have the master switch "on" but it was registering 9v ???

I make a comparison with my OH car which we leave on the drive for 3 months with the battery connected all the alarms switched on, on return it starts first time, never has the battery been flat and it is 15 years old 

one other point , my mover will not work if the voltage is below 11.5v.

Posted on 18/08/2022 09:13 by Rufs

"The modern electrics will drain a battery pdq in newer cars."

yes but we are talking about a simple LED control panel with a simply graphic and a 12v bulb inside a fridge , hardly modern electrics

"Why would you accuse the OP of winding us up?"

error was found some considerable time after arriving home, most folks check the fridge etc the day after arriving home, and clearly Andy must have had a lightbulb moment quiet late at night, maybe he had had a nightcap and a lightbulb moment so i will give him the benefit of the doubt

p.s. on my Thetford you can hear the relay clicking even when outside the van.

 

 

Posted on 18/08/2022 09:30 by Tinwheeler

You were the one who used a car as a comparison, Rufs, not me. I agree it's not comparable so wonder why you said it.🤷‍♂️

How nice that you now give Andy the benefit of the doubt. 

Posted on 18/08/2022 10:37 by Rufs

It was you who introduced a modern car, i simply used an old car, that has a fairly simple alarm system fitted and an old 12v battery and the performance over an elongated period as an analogy to a simple led system/light bulb over what was a relatively short period of time.

great believer in keeping things simple, i caravan for enjoyment, when things are not simple i get a man in to sort it out 

Posted on 18/08/2022 10:43 by Tinwheeler

You just don't see it but never mind. I'm not going to continue.

Posted on 18/08/2022 11:37

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alas !!!

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Posted on 18/08/2022 08:59 by Tinwheeler

That's because it's an older car, Rufs. I thought with your vast experience of various technologies you would have realised things have moved on. The modern electrics will drain a battery pdq in newer cars.

Why would you accuse the OP of winding us up? He got confused and made a mistake. I'm sure he could have found something much more controversial if his intention was a wind up.

 

Posted on 18/08/2022 11:51 by

The modern electrics will drain a battery pdq in newer cars.

Not so.  The systems in modern car go into hibernation.  Even my nine year old Volvo with more computers than enough will languish on our drive for three to four months and still start first time on our return.  Our neighbour with a 20 plate Hyundai and a 19 plate Kia Sorento has no problems either.