The following video outlines how to change the Oyster batteries, which is the same for each of the Oyster, Oyster2 and Oyster3 devices. Note: only replace the Oyster batteries with AA Energizer Lithium batteries.

The device must be sealed carefully to achieve the IP-68 rating.

  1. Remove all 6 screws.
  2. Remove the magnets by unscrewing the locking nuts.
  3. Ensure the silicon seal is in good condition.
  4. Remove the old batteries and replace with 3 new AA Energizer Lithium batteries. The device will blink as it connects in to the network and should update accordingly in your database.
  5. Replace the lid (the foam helps to keep the batteries in place) and gently squeeze it shut.
  6. Tighten the screws, starting with those which are opposite each other in order until uniform tightness is achieved. This helps to help prevent cracks from uneven pressure. The screws may be quite stiff the first time you do this.
  7. Reattach the magnets and locking nuts. Be careful not to overtighten as you may crack the rare earth magnets.

When sealing, we are looking for: Even pressure along all points of the silicone seal AND an even gap of about 1mm between the lid and base.


Please contact us if you have any questions.