yes, the battery in the bike has no traditional vent tube.
we asked about that during ScooterBob University and like he said,
they are a surprisingly good battery. it is similar to say a Miata
trunk mounted battery, not truly sealed but vented in such a
way where leakage is nil.
neither of our demos has had any issues with gasses causing
problems to date.
when we get the unitized cable/relay I'll ask our battery supplier for
a ahem, "sample" MotoBatt batt. for you to evaluate.
hang in there.