We have had our leisure battery since 2011 and for 11 years it has given us great service. For the last year or so I have thought hard about converting over to Lithium and drew up plans for a high capacity charging link between the tow vehicle and caravan and converting the caravan over...
but I believe the genuine ” German Jager manufactured plugs are acceptable for 4mm cable and they even have a crimp terminal version. So I’m going to do a bit more investigating as if I can get 4mm2 leisure battery and fridge circuits from end to end, that will reduce the voltage...