Keep it ticking

Last night I was lying in bed when I heard an unidentified electronic bleeping noise. I soon realised that it was coming from my chest, and was my pacemaker telling me that the battery is getting low. I called the specialist, who said that the battery should last a couple of months more, but would I come in tomorrow to get a new one fitted. Byn wants me to ask for a mains adapter (to go up my ...., and a remote control to shut me up when I get tiresome. Any other requests?