red-z 5 Posted July 30, 2015 Report Share Posted July 30, 2015 Hi. Reading my owners manual it says that the Battery Cover vent tube or breather pipe must be connected. Mine wasn't but I wasn't sure where to connect it to. Presumably it's to get rid of the gasses and obviously you don't want them in the boot. I stuck my breather tube out through a rubber grommet I found leading out to behind the rear bumper. Is this the correct place? Quote Link to post Share on other sites
Raistlin 313 Posted July 30, 2015 Report Share Posted July 30, 2015 That's a good question. The first thing I bought for my S Type was a new battery which didn't have a connection for the vent pipe. I was told that modern calcium batteries do not need to be vented. Quote Link to post Share on other sites
Old Peter 826 Posted July 30, 2015 Report Share Posted July 30, 2015 Hi Robin, My battery has a vent pipe, and it is pushed through the grommet on the rear bumper. Gases will vent outside. Paul provides some useful information. I come from an era of the dynamo and a battery that you topped up every week or so which powered nothing more than the starter motor. They have come along a lot since then, and will continue to do so. Regards Peter. Quote Link to post Share on other sites
Raistlin 313 Posted July 30, 2015 Report Share Posted July 30, 2015 Hi Peter, I too am from a generation where batteries were a regular maintenance item. I am not altogether convinced that modern batteries do not vent gas and would welcome the view of somebody who knows precisely what they are talking about rather than someone trying to sell me a battery. Having said that,I've now seen several S Types and none of them have a vented battery. Quote Link to post Share on other sites
KEN33Y 70 Posted July 30, 2015 Report Share Posted July 30, 2015 I'm going with the terminology "SEALED BATTERY" therefore,why would such need venting? Quote Link to post Share on other sites
Raistlin 313 Posted July 30, 2015 Report Share Posted July 30, 2015 I hope it does what it says on the tin Ken :) Quote Link to post Share on other sites
mindofitsown 5 Posted July 31, 2015 Report Share Posted July 31, 2015 I changed my battery about 3 weeks ago and both the old and the new, have a vent pipe. I think they must be older technology lead-acid types as they don't say 'maintenance free' and do have the 6 little screw plugs for topping up. Interestingly my Jag handbook makes reference to topping battery up. At the moment however both old and new are flat because some other problem (different topic). Quote Link to post Share on other sites
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