Flat Battery

[VNA]

Do gel pack batteries come already filled and sealed?. If so I guess they're unaffected by the legislation. Never bought one so wouldn't know.

The battery came empty.  You took the gel pack out of the box and just pushed it into the top of the battery, then leave it for 15 minutes or so.  Check all the gel has dropped into the battery.  Then fit the seal.  Stick it in the bike and press play.
The nice thing is you knew you were getting a band new battery, not somethingt that's been sitting around on a potentially dodgy charging rack for months on end.