How to replace the battery in the Volvo key fob, early fob version. - YouTube
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 S60 key fob battery replacement. - YouTube
A Volvo key fob: A post-mortem investigation - EDN
2011 - 2016 Volvo S60 Remote Key Fob Battery Change - How To Remove & Replace S 60 Key Batteries - YouTube