I am replacing both batteries in my 2015 R because car will be 6 soon and I don't want any battery issues. Just received the Antigravity H7 60Ah and want to do both and be done with this concern. Called 2 Jag dealers, one local and one in L.A. and all they can provide is a Jag part number. Called Interstate batteries, no clue. So I am turning to those of you that have either replaced or removed this second battery from their car for the proper size of this battery so I can get one from an aftermarket source, maybe they are available in a lithium version also.

 

It is likely that the ECO stop/start feature will not work with the lithium primary battery. Try it before you replace the secondary battery. If it doesn’t work, no need to have any secondary battery installed. If it does work, you can take the aH spec and dimensions from the secondary battery and purchase a properly sized AntiGravity lithium motorcycle battery.

 

Thank you so much for your quick response and information.