It would be a good thing to check your Victron 12volt 15amp IP65 chargers as Victron recently recommended updating my 2 Blue Smart Chargers to 1.63. This update has "bricked" both chargers. They are constantly flicking between bulk and abs. I have raised a support ticket with Victron and contacted the sellers to test them.They automatically contact the sellers based on the serial numbers of the chargers. My seller is Alpha Batteries and they've responded positively to the problem. Lets see what happens next.