How long should my Tandem insulin pump battery last when I’m using CGM?

A single battery charge on a t:slim X2 pump can last for up to seven days during normal use without CGM and up to five days with CGM. The best thing you can do for battery health is to charge your pump each day for 10-15 minutes or until it is fully charged.

Just like with a cell phone, the more often a display is turned on, the greater the impact on battery life. Things you can do to help minimize this on your pump include:

  • Clear alerts, alarms and reminders as soon as they appear
  • Set your Screen Timeout setting to 30 seconds (default). Options > My Pump > Pump Settings > Screen Options > Screen Timeout
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