If you're using the battery as little as you say then I would narrow the SOC range even further... Maybe something like 50/80.
I ride similarly and use as little battery as possible... but I live in an area with a lot of hills. So I charge to 80 and after a typical 25mi ride I'm usually around...
Speed sensor provides information to calculate speed. The odometer is a function of the display/controller using the same information. If the speed is correct, then the sensor is working correctly.
True....they have a lot of history and much to be proud of. But in modern history they were stuck.
Their position now is because of the west.
Take the precision of the Bafang Throttle... manufactured in Poland 🙃
Actually that's where they would be if we didn't open trade with them and allow them to steal and copy all our tech.
We proved for over a century that we can manufacture everything... then greed took over.
All you had to do was file a claim with your credit card for receiving damaged goods. I guarantee once the credit card bank took back payment, they would have been more accommodating and settled with you. I would never accept a battery with damage, cosmetic or not.
Don't let @PedalUma get you...