Hi completely new to ebike and Really confused what way to go for the best. Im uk based so limited to 15 mph I do 12 miles a day and the bike can really struggle on last stretch and on wet windy days. Its 200 watt brush less motor. run via a 36 volt 10 ah lithium battery and 36 v speed controller.
It seams a waste to chuck away the controller, battery and charger, for new one but also a waste to buy and fit additional 36 volt 10 ah battery to run in line.

What do people recommend ???

Id like better acceleration but not essential.
I really do need a longer range.
I really would like more up hill torque although with improved range this would come.

I would also be interested in more speed for off road use say 20 mph Like american versions. So maybe a way of switching restriction on and off. (Like I used to have on my Petrol scooter. It was limited to 28 mph but a in-line switch aloud me it to achieve 45 mph. when going between my cbt and moped license. depending on carrying pillion or not.)
I really want to spend as little as possible but still be practicable.
Bike has Cruise control.
Attached is pics off speed controller.
Thanks look forward to ideas and suggestions
Ps does anyone know what the orange wire is for ?

Can you just set your system for 20" wheel when you want to go faster (assuming your current wheel size is 26"); hill climbing and acceleration might suffer? Also, check pedelecs.co.uk if you haven't already. If Dveh answers your question, you'll have the best advice available.

Cheers i am on ped uk but had no replies so joined here in hope of advice lol. mines an e-ped running 16inch wheels.