“I purchased the Australian direct battery box and a 120ah battery to use as a 3rd battery in my 200 series Landcruiser and with the battery box having the vsr so itdisconnects from the 2nd battery in the 4wd There is no chance of it drawing power from anywere with some many Anderson plug and a volt meter and daul USB and other points on the box the quality of the box and wiring is just great best money I've spent was easy to set it up to use as a 3rd box to use for my daul zone waceo and even charging the kids devices all up 5 star rating for a great product by Australian direct well done guys”