I have parked my caravan at a storage site but have left my motor mover key in position. Will it drain battery or does it switch itself off? Do I need to go and remove it? I will remove it before I tow it anywhere
It's draining effect on the battery may well depend on the manufacturer/model, but as they are never intended to be left connected, wouldn't assume all necessarily will have a shutdown/standby mode, but my Powrtouch Evolution model does. Even in hibernation, I would expect a very small power drain that would take it's toll over the longer term.
Extract from the Powrtouch manual:
If left switched on it will stay live for 20 minutes (approx.) before the ECB will go in to a hibernation mode. The ECB can only be reinitialised by the following: -
1) Turning off the isolation switch
2) Remove the key from the switch
3) Wait for a minimum of 20 seconds
4) Then reinsert the isolation switch key and turn on
5) Turn on the handset and use the Powrtouch Evolution
Suggest you take a look in your operators manual to check your specific model, if your's is in the van, most can be downloaded from manufacturers web site to save a trip to your van.
I left, accidentally, ours in the on position after a holiday in late June last year. In August I found the battery was too flat to work anything in the 'van.