Backup to pacemaker battery life?
Since August 2018 I have had 2 check ups and both times was told I had 9 months left on the current pacemaker battery. In November they went as far as to tell me that I would be called in for a replacement either just before Christmas or in the New Year. Beginning of December I rang as I had not heard anything and was told another checkup was scheduled for end of January and "not to worry as the pacemaker has a guaranteed back up of 3 more months when the battery ends". I rang again this week to be told I was not on the list for a checkup but to come in anyway and "not to worry a the pacemaker has a guaranteed back up of 4 more months when the battery ends". Is it true that it has its own 'generator' I am not filled with confidence..