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Indeed, EHAs (Electro-Hydraulic Actuators) are a perfect example of this as a potential method for regen. And have been tested and used in car suspension in the past with moderate success

Indeed so at 5 or 10 Watts, cycling for an hour, youve effectively then achieved 1-2% of your batter capacity. Half for wastage gives 0.5-1% of the battery. Therfore in one hour youve potentially gained half a kilometer. over a longer ride who knows. But yes its not going to be half your range...

I completely understand, this is purely an excerise in seeing what is possible and finding potential solutions (even if there isnt a particular problem that requires a "solution".. ;) ) I have had a go and yes its incredibly surprising haha, thank you very much for your input though, always...

Indeed, but we are talking 5-10 Watts range on average, peaking higher and dropping lower of course depending on terrain. Considering a phone charger uses 2-6 Watts... not negligible

We are talking about power harvested from the suspension damper here, not brakes... All those bumps and shocks its absorbing as you go. Clearly miles of range from the brakes would require them to be permanently on hahaha

If the energy is currently wasted, purelyt retriving some of it instead wont be detrimental, clearly other things mentioned like weight/complication may do...

Thanks for your insight on this! Yes, im not sure if braking would be the way to go, but then always worth investigation. Exactly, damping is just free energy kindly heating the damper and being wasted, from initial predictions, you could be averaging 5-10 Watts lost in the rear suspension...

I agree, however currently the energy is just going to waste as heat, so if you could retrieve some, even if only to add another couple of miles to your range, might it not be worth considering? Im definitely not thinking youll never be charging up the bike again!! :D Marginal gains

You may be on to something ;)

Fair enough. Out of curiosity, main reason why not?

Energy harvesting comes in lots of forms such as regenerative braking, but less well known is energy harvested from suspension. I am wondering if people would be interested in having a system on their E-bike that would potentially charge the battery, or maybe a GPS/phone etc. Please feel free to...