After about 2 years, 8,000kms, and probably 600 charging cycles, the battery pack of the CT20 that is my daily driver had noticeably dropped in range, and I wasn't able to find a local service technician to attempt to "re-cell" it, so I ordered this replacement.
It's noticeably heavier than the one that came with my bike, a perfect fit, and comes with two new keys. My "range anxiety" is a thing of the past.