Editing the original post title and adding a bit here. This thread has gotten off track. Just to be clear, the pump was not recognizing a battery change. After replacing the battery (with verified good lithium cells), the pump continued to show low battery and apparently run on the backup battery. Eventually the backup battery would die, and then the pump would lock up.
Wanted to pass this on in case anyone runs into it.
Last evening, my Medtronic 670G locked up trying to change a low battery. Before I get into this, I want to assure everyone that the pump DID suspend pumping when this happened.
On my way home from work I got a low battery alarm. I was about 20 mins from home, so elected to wait until I got there to change it. By the time I got settled, the battery had exhausted, was in alarm, and had suspended the pump and CGM. I replaced the battery with a new Energizer Lithium battery, screwed the cap back down… but the pump continued to indicate the battery was dead and would not respond to any button presses. Alarms continued while I tried a 2nd and then 3rd battery with the same results. As I was checking all three of the batteries with a volt meter to ensure they were good (all were above 1.6V), the backup battery in the pump exhausted and the pump was dead.
Called Medtronic, after going through the “script” the rep was reading from, I eventually got him to get me over to tech support. Not sure why this needs to be this way Medtronic. I had a dead pump, I shouldn’t need to go through my life history with the 1st level rep to get him to transfer me to tech support. Between hold time and rep interaction, this took 10mins.
Once I got to tech support, things worked much quicker. He didn’t bother with the “did it get dropped, did it get wet, did it get damaged in any way” questions until we were done… this guy got straight to work.
So long story short, with the help of tech support, I learned a new trick on the 670g. Note, doing this will cause both the CGM an BGM to no longer be linked to the pump.
In the event of a frozen screen/blank screen:
- Hold the “back” button down for 30s
- Replace with a known good battery
- Pump should reboot
- Acknowledge any alarms
- Set time/date
- Disconnect the CGM transmitter (this can be tricky because of all the tape)
- Place CGM transmitter on the charger briefly (longer if you need a charge)
- Delete the CGM and BGM from the Device Options menu
- Remove the CGM transmitter from the charger, ensure the green light flashes briefly and reconnect it to the pump from the Device Options menu
- Once you’ve got it the CGM connected, place it back on the charger again briefly, then remove and connect to the sensor, and follow the steps you would normally take from there to start a new one
- Reconnect the BGM via the Device Options menu
Double check your settings and with any luck, you will be good to go.
No explanation from Medtronic as to what happened, but after we had the pump up and running he did have me go through and give him all of the information I could about what/when things had occurred.
Hope this helps someone.