Volvo S60 XC70 battery disconnect and reconnect procedure - YouTube
New Battery | SwedeSpeed - Volvo Performance Forum
Amazon.com: for Key FOB Battery CR2430 2430 Replacement for Volvo Remote (Bundle with Opening Tools) for 2009-2017 S60 S80 V70 XC60 XC70 Smart Key W. INSTRUCTIONS (NOTE: SOME VEHICLES REQUIRE TWO BATTERIES) :
Volvo V70 And S60 01-07 Battery Replacement. Yes, it's well hidden! - YouTube