@ted3
I have 3.5 years left on my device. For me that is a long time. I am 78.

Mayo Jacksonville put all 3 of my devices and does my remote home and in office checks of my device. Mayo Jacksonville does remote monitor home test every 3 months with a device called latitude. I go into office for more extensive testing every year unless prolems are seen from remote test. Do you have this type remote device equipment with Medtronic?

My remote and office visit device reviews are sent to my patient portal. I have access to those device checks and comments by the EP who reads the device. I can also sent questions to my Pace Clinic and EP and get answers via Mayo portal.

It appears your device is doing a lot more different exercise things above mine. When you had your first device check what was your battery life? That gives you a base line of your battery expected life.

My EP gave me gave me the norm for ICD/Pacemakers was 8-10 years. I am sure as devices get more modern and upgraded that battery life gets better just as the devices get better. I can already see the change in mine from first one as is smaller. I am on my 3rd device.

The life expectancy of my battery is going to depend on how many times my ICD/Pacemaker charges, shocks me, and the amount of impedience resistance on wires that develope over time. I have had the same wires since 2006 almost 20 years ago. I don't see by your post that you have a ICD/pacemaker device just a pacemaker? Is that correct?

I do not have the exercise mode turned on on my device. I do not like the feeling. I exercise without issues. I was really impressed with your device doing so many different things but from that seems would be using more battery life to do all that it is programmed to do.

I am sure your pace clinic is on top of your battery and would tell you if something wrong. Not sure what the 50% means. Are they saying you only need it 50% of the time as your heart is responding on it's own. I know my device pacing is at 92% and they like it to be 98%. But my pacing is at 70 bpm and is constant as my resting pulse rate is down in 30s.