charging batteries

no doubt been discussed many times before. my van is running on mains ehu and batteries showing full charge. the fridge is on. my question is, if i unplug overnight presumably the fridge will try gas power. or if i leave the leccy on will it over charge the batteries? thanks. Doug.

Is this while you are using the van or when its stored?

If you don't want the fridge on then switch it off.

If you have the smart charge enabled, the charger will switch between vehicle and leisure battery as needed and neither will be over charged.

hi Peter. i am going to drive to camp tomorrow and was a tad dubious about battery charging overnight. the fridge is on and full. i seem to be talking gibberish but the handbook is not totally relevant to my van. thankyou for replying. Doug.