Check if your Bosch dealer have a battery checker like this Bosch Battery Capacity Tester , if they do have it they will print a report like in the picture.
0275007544 is vertical, 0275007546 is horizontal, so DON'T BUY IT, it will not fit.
Please tell me how you figured out that battery lost 20%? I have 17000Km and i can't tell any difference.
I use 44t DECKAS chainring on my emtb for the same reasons you describe plus that i run de-restricted. Chainring is narrow/wide and i use it without any chainguard without any problem. Change every 5000 Km...
I bought these, So far, so good
https://www.bike-discount.de/en/stronglight-e-bike-crank-set-magan-4-160-mm-bosch-gen.-1/2/4/brose?number=20112951-40301256
I agree with you, i also have been using their products for 7 years on 5 different bikes and has been working without any problem. Support is also Excellent. People do not know them well because they sell chips themselves. THEY DO HAVE FOR BOSCH SMART MOTOR , not with rim magnet.
I totally agree with you. I am on my 3rd Cube ebike. Most people like exotic names and pecculiar geometry when the best value for money and bikes they do it all belong to CUBE.
Coming from a Motocross background myself, i suggest that the only way to fully enjoy an emtb is to buy a full fat and derestrict it. Be careful, BOSCH SMART SYSTEM with rim magnet cannot be derestricted.