I bought a second for my bike to take on long rides. Because this design is compact, I can put the second battery in my rack bag and take it along for extended range. I will easily get 60+km out of it and have never actually gone far enough to deplete it.

I am happy with my new battery. I can use my bike again for hours.

I bought this 2nd battery pour long ride. Now I did not use yet, summer was too short

Seems to work fine only got to go for one ride because it’s been raining and cold here in Quebec…

No issues. Very pleased.
I love my NCM Prague bike, especially its sporty look and ride.