Oticon does make a travel charger for the More already, so I’m not sure why somebody would want to use a different brand/different model charger instead, at the risk of messing up a very expensive pair of hearing aids, or at least expensive batteries.
These are sophisticated electronics using Lithium-ion batteries, so beside the high cost factor, there’s also a safety/risk factor of charging an unstable battery chemistry such as Lithium-ion on top of it. Do you want to risk blowing up or catching your More HAs on fire?
Now if there is no travel charger option available on the More, I can understand the question being asked. Or if someone may want to know if the Oticon travel charger can be backward compatible with the OPN S or something like that. But inter-brand inductive charger interoperability? I wouldn’t even dream of trying something like that unless the other manufacturer expressedly advertise that their own charger is compatible with the Oticon More and even guarantee and accept responsibility if the More HAs get ruined from being used in their charger.
Inductive charging on Lithium-ion based systems is not the same as using 120V volt household outlets or even using the ubiquitous 5V USB charging system. I would think that they’re highly customized and specialized and don’t follow any governing standard. But maybe I’m wrong.