Originally Posted by aseb

Hi. I have a powabyke, and a few nearby hills that I need to give pedal assistance to get up. Help is needed for the hill climbing due to deteriorating medical condition.
I gather these use 36V 200 Watt brushed motors (UK). Currently it has a 6Ah LiPo battery but I have a 20Ah LifePO4 to fit (36V),
I've seen 500W and 750W kits that would theoretically be two or three times as powerful, as well as 300W and 700W hubs now. I have read that these ratings are not peak ones, so I guess that there may not be twice and three times the power really available for hill climbing.
Anyhow, how improved is hill climbing for the extra power? (I'm not really bothered about top speed). I haven't found anything that gives indication of hill climbing for the different powers- eg hill gradients or relative performance. I realise that many other things will affect performance- weight, motor make/characteristics- but is there an indication of how hill climbing is improved with the extra power.
I want to stick with hub powered motor for ease of upgrading. I can't recall the gradients at the moment but can note them next time I'm out if needed.

Finally, would you expect range to decrease for the higher powered motors?

thanks for your thoughts and advice