New to site

Have noticed that when starting her car first thing in the morning the battery is not turning over the engine vigorously enough
so went to check/top up battery but there is what looks like a water top up system in place, lots of transparent tubes going into where you
would normally pop off the plastic covers and expose the plastic nuts that screw/prise off.
Decided to not touch as I have never seen anything like it before.. can anyone advise ?
Cheers Warren