I have a Victron 12/350 inverter which worked flawlessly for several years. Using it on a German-made Braun induction toothbrush charger destroyed the charger and the inverter now goes to "overload" when I try to use, although when first switched on the green light is constantly displayed. Clearly there is now a fault with the inverter, and also, should they not work on an induction charger?