Hi, I had the same problem with the battery draining it turned out to be the radio, if you notice the radio on the axis will not turn off from the ignition and only turns of when you put your leisure battery into store mode, so if you don't turn off your leisure battery and not plugged in your batteries will drain overnight, to rectify this all I did was install a little switch connected to the live feed to the radio, so when we wild camp I just turn the radio off from the switch and all is well. hope this helps
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