What drains leisure battery the most?

[gavandi]

Being a complete novice at off grid camping......was trying to work out what drains the leisure battery the most?

 

[Oldrat]

Can’t you check your control panel, using one appliance at a time ?

 

[Pauly]

Anything that generates heat electrically will be a big drain along with anything mains powered running through an invertor (if you have one)

 

[Grubscrew]

Electric water pump, and fridge.

 

[gavandi]

Thanks....
Had started to point the finger at the fridge!