Flat vehicle battery

Hi Jim
Welcome to the forum from Bridlington 
Boaby

Welcome back Jim, hope you got home safe and sound and you have your vehicles running.
Boaby

Jimthetim wrote:Hi

I have a 2019 Burford Duo and found my vehicle battery was flat.
The van is not connected to mains power, I had all internal electrics switched off.
Any ideas as to what is running my vehicle battery down ?

I don't have a MB conversion but I do have the EC700.  The vehicle battery will discharge over time through self-discharge and drain from the vehicle electrics and a vehicle alarm if you have one.  On the Peugeot conversion there is a red button on the ignition which can turn off the vehicle electrics when the vehicle is being stored which slows down the rate of discharge but it will stop the central locking and vehicle alarm from working.  If your Burford was stored in the open with the EC700 shutdown, all the solar power should have gone to the vehicle battery providing the vehicle electrics were not also shutdown.  This should have been enough to stop the vehicle battery from going flat.  If you did not shutdown the EC700, the EC700 would have consumed up to 10Ah of your daily solar charge which is a lot if your solar charge is low.  It could then depend on how you set up the solar charge - vehicle, leisure or both (smart charging).  If you had it set to leisure your vehicle battery will have received no charge.  There is also a possibility that you had the vehicle battery set up as the active battery with the EC700 CP on, in which case if any of the habitation electrics had been inadvertently left on, e.g. the amplified TV antenna or the internal light in the wardrobe, it would have flattened the battery.  So there are many reasons why your vehicle battery could have gone flat.