Going on my ownership of a tre 1130 k .
I can only recommend a Lithium lifepo4 battery . I too had issues a little over two years ago with a so called top notch brand new AGM lead acid battery ,it Failed m a few times .
So I did a bit of research and opted for the lifepo4 cells Lithium over the ion cells...
I've not looked back once after fitting the lithium battery nor has the bike ever run out of power to start up . Also the special charger I bought for trickle charging a lithium is like an ornament just hanging on my garage wall not plugged into anything ...lol .