I went lithium because I can’t easily use an Optimate and this type is quite happy to stand unused.
It has its other features and it’s early days yet. But bike has started fine in sub zero degrees just needs a different technique. In warmer conditions it’s just like any other battery.
There’s a huge weight saving, no need, and no benefit, from float charging. Just never ever use an Optimate as that high voltage boost will instantly kill a lithium. It will also be bricked if charge gets too low but a plain ordinary car battery charger will top it up if needed.