After removing the controller canister from the controller shelf, you can remove the battery.

  1. Remove the controller canister’s cover by pressing down on the button and sliding the cover off.

  2. Confirm that the green LED inside the controller (between the battery and the DIMMs) is off.

    If this green LED is on, the controller is still using battery power. You must wait for this LED to go off before removing any components.

    28 dwg de2000h de4000h internal cache active led maint de2000h de4000h

    (1) Internal Cache Active

    (2) Battery

  3. Locate the blue release latch for the battery.

  4. Unlatch the battery by pushing the release latch down and away from the controller canister.

    28 dwg e2800 remove battery maint e2800

    (1) Battery release latch

    (2) Battery

  5. Lift up on the battery, and slide it out of the controller canister.

  6. Follow the appropriate procedures for your location to recycle or dispose of the failed battery.

    To comply with International Air Transport Association (IATA) regulations, never ship a lithium battery by air unless it is installed within the controller shelf.
  7. Go to Install new DE2000H or DE4000H battery.