This battery works great, no problems starting the bike on demand, even on a very cold day (36F). The lithium battery is very light compared to a conventional battery, a highly appreciated feature.
Can't speak to the overall life of the battery yet, but keeping it on a smart charger/tender when stored, so expecting it to last for several years longer than a lead acid equivalent.
KTM Twins had a good price and shipped the battery quickly. Very happy with the experience.