This support page explains there is an eco charging mode in FP3 that is used by default:
Another nifty feature of the FP3 is that when it charges, the default charging method is Eco charging mode. Eco charging handles charging more efficiently and is good for the quality of your battery. An efficient use of energy and a longer battery lifetime is also better for the environment!
Eco charging does not compromise charging time, your battery can still be fully charged in under 3 hours.
So when it does not take longer to charge, what exactly does it change/do (differently) then? What is the technology behind it?
And why is it more “ecologic”?
This is not explained anywhere, and I want this “marketing” claims baked by facts/a technical explanation of what it does.