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Replace the backup battery

This section provides the information to replace the backup battery of the device IoT2050 and does not apply to the device 6ES7647-0BA00-0YA2, which has no battery.


  • The device is disconnected from the power supply.
  • A replacement battery with the article number A5E44491494 is available.

Risk of explosion and release of harmful substances

  • Improper handling of lithium batteries can result in an explosion of the batteries.
  • Explosion of the batteries and the released pollutants can cause severe physical injury.
  • Worn batteries jeopardize the function of the device.

Note the following when handling lithium batteries

  • Replace the battery every 5 years.
  • Replace the lithium battery only with the type recommended by the manufacturer. The order number is A5E44491494.
  • Do not throw lithium batteries into fire, do not solder on the cell body, do not recharge, do not open, do not short-circuit, do not reverse polarity, do not heat above 100°C and protect from direct sunlight, moisture and condensation.


To remove the backup battery, follow these steps:

  1. Remove the power plug and marked screws.
  2. Loosen the top housing. Carefully press with the blade of a flat-blade screwdriver in the marked recesses and carefully pull on the appropriate place on the top housing of the enclosure. Remove the top housing of the enclosure.
  3. Remove the marked screws on the motherboard.
  4. Unplug the battery cable from the motherboard.
  5. Remove the motherboard.
  6. Remove the battery. Paste the lock tape on the battery and then paste it on the device housing. Plug in the battery cable on the motherboard.
  7. Install the motherboard and install the top housing.

Disposal of batteries and rechargeable batteries

Batteries and rechargeable batteries do not belong in domestic garbage. The user is legally obliged to return used batteries and rechargeable batteries.
Used batteries and rechargeable batteries pollute the environment as special waste. You as a user are liable to prosecution if you do not properly dispose of batteries and rechargeable batteries.
Observe the following when disposing of batteries and rechargeable batteries: - Dispose of used batteries and rechargeable batteries separately as hazardous waste in accordance with local regulations.
- You can return used batteries and rechargeable batteries to public collection points and wherever batteries or rechargeable batteries of the type in question are sold.
- Label the battery container "Used batteries and rechargeable batteries".

Last update: May 14, 2024