Vented or unvented battery?

[jmsgld]

I look after a foreign neighbour's DB7 and 06 plate petrol Mini whilst they are away.

The Mini needs a new battery, it still has the original BMW one in it with a vent tube.

Another neighbour is a manager at TPS so I normally get him to get my batteries for me. The replacement he has doesn't have a vent.

Is this an issue? Presumably it's just a sealed battery that doesn't need a vent, or is there something particular to BMW's that their batteries need venting?

Many thanks, James

[jmsgld]

Yuasa 3027 suggested from TPS, battery under the bonnet.

[anonymous-user]

Some batteries are sealed maintenance free. Simple as that. Minis don't need a special battery. As long as the cranking power is enough, and it will fit, it will work.