Simon Lock (Aergan) on Twitter: "Inside the tomb is the original battery which has failed but thankfully hasn't yet leaked. So hopefully this is just a case of the battery has drained
How to Change the Suicide Battery on the CPS2 Arcade Board (with video)
Steve Lin on Twitter: "Important arcade PCB maintenance: Replacing the Capcom CPS2 suicide battery every few years. https://t.co/wnhcLox22S" / Twitter
How to Change the Suicide Battery on the CPS2 Arcade Board (with video)