Hi, as I'm able to park my caravan on my drive I always top the battery up with the normal site cable every month or so, but I gather that it's only able to pump about 70% of full charge into battery, so removing and trickle charging in you shed is the option. Used by most of you, however as I'm disabled I would find removing my battery quite difficult, so would it be ok if I connected my separate charger to it while still in caravan battery box, I expect I would have to remove the terminals or could I leave everything as it is and just connect crocodile clips