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How to replace a rechargeable backup battery of a range extender

Updated

How to replace a rechargeable backup battery of a range extender

To replace a rechargeable backup battery:

  1. Unscrew the fastening screws from the SmartBracket mounting panel.

  2. Remove the range extender from the SmartBracket mounting panel.

  3. Disconnect the power and Ethernet¹ cables, then turn off the range extender by pressing the power button for 3 seconds.

  4. Turn over the range extender and place it on a soft surface with the Ajax logo down so as not to scratch the enclosure when dismantling. Remove four screws with a cross screwdriver (PH1).

  5. Remove the range extender lid by holding the power and Ethernet¹ connectors with your fingers. Set the lid with the Ajax logo aside.

  6. Unscrew ten screws that fix the range extender boards.

  7. Remove the boards from the range extender enclosure by lifting them evenly from both sides. The boards are interconnected and must be removed together.

  8. Disengage the boards and set the smaller one aside.

  9. Turn the large board with the rechargeable battery facing you and disconnect the battery’s terminal from the board.

  10. Detach the rechargeable battery from the board. The battery can be fixed in two ways: with tape (sticker) or double-sided adhesive tape.

    1. If the range extender rechargeable battery is fixed with tape (sticker), pull it up with a slight effort.

    2. If the range extender rechargeable battery is fixed with two strips of double-sided adhesive tape, use a plastic card:

      1. Push through the first strip of double-sided adhesive tape without applying excessive effort.

      2. Place a sheet of paper between double-sided adhesive tape and the rechargeable battery to prevent the battery from sticking to the board.

      3. Do the same with the second strip of double-sided adhesive tape.

      4. Carefully remove the remaining double-sided adhesive tape from the board.

  11. Connect the terminal of the new rechargeable battery to the range extender board. The table below provides compatible rechargeable battery types.

    Range extender model

    Rechargeable battery type

    ReX Jeweller

    • 2 Ah, 2-pin battery for Hub/Hub 2/ReX/ReX 2

    • 2 Ah, 3-pin battery for Hub/Hub 2/ReX/ReX 2

    ReX Jeweller, manufactured after August 26, 2022, has a 3-pin battery. If the device was manufactured earlier, the battery can be a 2-pin or 3-pin one. To find out the rechargeable battery type, contact Ajax Technical Support or check it manually.

    ReX 2 Jeweller

    • 2 Ah, 2-pin battery for Hub/Hub 2/ReX/ReX 2

    • 2 Ah, 3-pin battery for Hub/Hub 2/ReX/ReX 2

    ReX 2 Jeweller, manufactured after October 7, 2022, has a 3-pin battery. If the device was manufactured earlier, the battery can be a 2-pin or 3-pin one. To find out the rechargeable battery type, contact Ajax Technical Support or check it manually.

  12. Place the new rechargeable battery like the old one and secure it on the range extender board using the bundled 3M adhesive-backed tape. If installed incorrectly, remove the battery from the board and reinstall it. Lay the battery cables as shown in the figure. Otherwise, the cables may be pinched.

  13. Connect the boards using the connector.

  14. Carefully install the boards into the range extender enclosure by aligning the Ethernet¹ and power connectors on the board with the corresponding openings in the enclosure.

    Make sure that the rechargeable battery and its cables are not pinched. When installed correctly, the boards are tight on all supports and are not loose. While holding the boards with the range extender back lid, turn the range extender over. The power and Ethernet¹ connectors must be fully seated, and the power button must not sink in. Otherwise, remove the boards and reinstall them on the back lid.

  15. Fix the board inside the enclosure with screws.

  16. Cover the range extender with a lid, turn it over by holding the range extender on both sides, and fix the lid with screws.

    After replacing the rechargeable battery, it is necessary to check the range extender operation. Connect the range extender to the power supply and check in the Ajax app whether the battery level changes after 10 minutes.

    In case of malfunction, we recommend contacting Ajax Technical Support or the place of purchase.

¹ Ethernet is only available in ReX 2 Jeweller devices.