I made the mistake of fitting one to T'Wife's VTR1000, where it had inadequate cranking power or capacity to start the bike if it had stood for more than a week. Then it failed just out of the "generous" 6 month warranty. Mine came from Wemoto, who did give me a substantial discount on a Yuasa replacement despite the Motobatt being out of warranty.
Always used Bosch on BMW airheads, with good performance and working life (6-7 years). I won't be risking another Motobatt in any application period.