Seems odd as some vehicle charging systems run at 13.8v while others run at 14.4v, you'd expect a fit and replace option of lithium batteries not have issues. Especially as the batteries I have seen are supposed to be direct replacement.
This may be why some people have had a fit and forget, and others have replaced lithiums more often than oil. Maybe it depends on the bike more than anyone would like to admit.
Don’t they need a Mosfet that outputs a
currentvoltage that doesn’t kill the battery?https://www.motoelectrical.co.uk/types/regulators-/lithium-ion-batteries-compatible-mosfet-voltage-regulator-rectifier-atv-utv-motorcycle-snowmobile-pwc-scooter/