Caravan Battery Chargers

I have a Bailey Pegasus 4 (2017) I have a motor mover fitted, keep mains lead in whilst at home on the drive, just been away for a week and motor mover wont drive , just clicks battery volts showing 6.5 but when on mains 13.8, just had the van serviced, is there an isolator switch fitted any where ? or is my charger not working ?

TIA

Mike

My suspicion it is your battery.

When you use the mover the voltage collapses as the battery has no capacity to deliver high current.

When plugged in the charger puts out 13.8 so this makes sense as this is the voltage you would see at the battery.

Try another battery, or take your battery home and charge externally.

Your mover should have a key switch in the battery box, big red one. Other than this then no, it is fed from the battery.

battery volts showing 6.5 but when on mains 13.8

Surely that is merely measuring the voltage delivered by the battery as against the voltage delivered by the EHU.

Leave battery on charge for say 12 hours then check the two voltages to see if battery has retained a charge or not.

Have to say that from what you say, the low voltage will not drive your motor mover. You do need a well filled battery for that.

The other point to mention is that the Bailey charger is not “intelligent” so it will give 13.8 volts maximum. This is not enough to properly charge a depleted battery but is OK for maintaining on EHU. If your battery has been significantly discharged it needs to be disconnected from the van and charged up with a decent charger like a CTek.

A smart charger like Sargent or the Coachman units will take the battery off line when you are on EHU and recharge using a multistage charger delivering 14.4 volts (for sealed lead acid batteries).

CTek chargers have been known to recover some “dead” batteries although some may regard it as more cost effective to simply replace the battery.

This is not true.

13.8 volts will fully charge a battery it just takes LONGER.

All a multistage charger will do is charge quicker. I've had a bailey with the 13.8v charger and my battery lasted 9 years.

At present I have a Swift with the multistage charger.

On my Bailey one cannot use the mover with EHU connected as the isolator key switch is behind where the mains power connector fits into the socket.  I just assumed that all makes would have this feature to avoid doing horrid things to the charger.

My telly sockets are under the 240v plug/socket ☺

I don't see the connection.   (He he he)

b' dum tish! 😉

yes, same, that is what the dealer said when they fitted it there. Some have said they have ruined the mover box by using it with EHU