we are a bicycle and component manufacturer from Germany.
We have a product in our product line called “The Plug” which allows to charge devices such as smart phones etc from a bicycle dynamo hub, which is fantastic for GPS navigation on a bike. See the link below for details: label.obscured.placeholder
As the dynamo (generator) hub can only produce so much power as you ride along most devices do not charge below 17km/h (10mi/h), as they require more power than the cyclist can produce at the speed below.
Therefore we have the following request. Is it generally possible to develop an app (for iphone, android, windowsphone) that limits the charging power and sets a state like “slow charging” or similar, with eg. consuming only 100mA @ the given 5V USB spec?
Thank you and best regards,