What is this? (drainage pipe?)

[Funkstar De Luxe]

I was doing some basic maintenance, when I noticed a loose drainage pipe next to the battery. I can't for the life of me see where it attaches to. Anyone know?

[Burg Boxster]

it's a vent for the battery and should be connected to it unless it's a ventless kind (like Optima) but that one sure looks like a regular lead-acid battery...

[onaFLYer]

that battery should have a connector on one end for the hose, or the connector is missing. Find one and attach that hose so it vents properly.

[Funkstar De Luxe]

Please excuse my ignorance on the matter, but what is the purpose of a battery vent? None of my other cars required it. Is it important? Because I don't think I have the extension hose connector.

[Ghostrider 310]

If I recall correctly, it's to allow overflow of Sulfuric acid or gasses to prevent the battery from exploding which I have seen but not in 30 years. Be advised, many batteries look sealed but actually have serviceable cells, I know the Interstate my 986 had was accessible as many are. If you allow the fluid level in a battery that can be serviced to go below a lead plate, nine times out of ten it's toast...

[stephen wilson]

Most cars don't need a vent tube because they are in a ventilated area, the engine bay. The boxter battery it in a fairly well sealed space, the "Frunk".