Which is the best motor battery combo for a legal Pedelec?

[SteveRuss]

Bit of a provocative opening but as i'm very new to the Pedelec world, and as some know the proud and happy owner of the Kalkhoff Pro Connect Alfine 8 with the 17ah battery connected to the Impulse 2, i'm intrigued. I was just wondering where people think we are with current and past technologies and more to the point, what the future may hold within these current European constraints.

If in ten years we still find ourselves restricted to 250watt motors with the 15.5mph limit (not saying that's a bad thing per se), where can the technology takes up from there? 100ah 48volt batteries weighing 1kg would be a start. Where else can the boundaries be stretched?

 

[Deleted member 4366]

Motors haven't changed a lot in the last 10 years in principle, so I would expect that to prevail in the next 10. Batteries, like computers, are improving all the time. During the last four years, the weight has halved and the power doubled. I would expect that to happen again during the next five years, so in 1 years time, we should have 30 aH batteries that weigh about 2.5kg.

Legalwise, I would expect the 250w limit to disappear along with the weight limit, but the speed limit will stay; however, I would expect some class of vehicle to be introduced where we can have slightly faster bikes with less red tape than a motorcycle.