Field Notice: FN74181 - Batteries in Some Cisco IP DECT 6823 and 6825 Handsets Will Not Hold a Charge - Replace on Failure

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Updated:October 11, 2024
Document ID:FN74181

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Medium
Impact Rating:
Medium
First Published:
2024-Oct-11
Last Published:
2024-Oct-11
Revision:
1.0
Cisco Bug IDs:

Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Products Affected


Affected Product Name Description Comments
CP-6823-3PC-AU-K9= Cisco IP DECT 6823 Handset, Cradle, MPP, Australia PSU  
CP-6823-3PC-BUN-AU Cisco IP DECT 6823 Bundle, Handset and Base, MPP, AUS and NZ  
CP-6823-3PC-BUN-CE Cisco IP DECT 6823 Bundle, Handset and Base, MPP, EMEA  
CP-6823-3PC-BUN-NA Cisco IP DECT 6823 Bundle, Handset and Base, MPP, US and CAN  
CP-6823-3PC-BUN-UK Cisco IP DECT 6823 Bundle, Handset and Base, MPP, UK  
CP-6823-3PC-CE-K9= Cisco IP DECT 6823 Handset, Cradle, MPP, Cont. Europe PSU  
CP-6823-3PC-K9= Cisco IP DECT 6823 Handset, Cradle, MPP, No PSU  
CP-6823-3PC-NA-K9= Cisco IP DECT 6823 Handset, Cradle, MPP, North America PSU  
CP-6823-3PC-UK-K9= Cisco IP DECT 6823 Handset, Cradle, MPP, UK PSU  
CP-6825-3PC-AU-K9= Cisco IP DECT 6825 Handset, MPP, AUS and New Zealand  
CP-6825-3PC-BUN-AU Cisco IP DECT Bundle, Handset and Base, MPP, AUS and NZ  
CP-6825-3PC-BUN-CE Cisco IP DECT Bundle, Handset and Base, MPP, EMEA  
CP-6825-3PC-BUN-NA Cisco IP DECT Bundle, Handset and Base, MPP, US and CAN  
CP-6825-3PC-BUN-UK Cisco IP DECT Bundle, Handset and Base, MPP, UK  
CP-6825-3PC-CE-K9= Cisco IP DECT 6825 Handset, MPP, EU and APAC  
CP-6825-3PC-K9= Cisco IP DECT 6825 Handset, MPP, No Power Connector  
CP-6825-3PC-NA-K9= Cisco IP DECT 6825 Handset, MPP, US and Canada  
CP-6825-3PC-UK-K9= Cisco IP DECT 6825 Handset, MPP, United Kingdom  
CP-6825-BAT= Cisco IP DECT Battery for 6825 phone  
CP-6825-RGD-AU-K9= Cisco IP DECT 6825 Handset Ruggedized, AU and NZ  
CP-6825-RGD-CE-K9= Cisco IP DECT 6825 Handset Ruggedized, EU and APAC  
CP-6825-RGD-NA-K9= Cisco IP DECT 6825 Handset Ruggedized, US and Canada  
CP-6825-RGD-UK-K9= Cisco IP DECT 6825 Handset Ruggedized, UK  




Defect Information


Defect IDHeadline
CSCwk81471DECT phone battery (CP-6825-BAT=) fails

Problem Description


The batteries of some previously unused Cisco IP DECT 6823 and 6825 handsets are not holding a charge. This issue appears in some new handsets that have been in storage for a long period of time. The fault is in the battery. Customers are advised to follow the battery usage guidelines even if the handset is unused.


Background


Customers have reported that some new handsets lose their charge. After troubleshooting, batteries with the part number CP-6825-BAT= were found to be at fault.


Problem Symptom


The battery may exhibit the following symptoms:

  • Inability to power the handset when it is off the cradle
  • Swelling
  • Excessive heat when charging
  • Voltage lower than 3.65V

Workaround/Solution


The affected battery must be replaced. There is no known workaround, but the following guidelines can be used to extend battery life:

  • Store the battery with a half charge.
  • Store in a cool, dry place (5°C to 25°C).
  • Do not store for more than 6 months.

See the Battery Usage Guide. Cisco is working to ensure that batteries are stored with a minimum charge and are recharged periodically if stored for more than 6 months.


How to Identify Affected Products


The DECT batteries (CP-6825-BAT=) that do not hold a charge were stored for more than 6 months. The phone may indicate that the battery is charged, but it fails to stay powered when removed from the cradle. See the Products Affected section for a list of affected handsets and kits.

Steps to Identify Affected Batteries:

  1. Check the manufacturing date.
    • Locate the manufacturing date on the battery label. The date is typically in the format YYYY-MM-DD.
    • Batteries that were found to be affected by this issue during testing were manufactured in 2019 and 2020.
  2. Inspect the physical condition of the battery.
    • Look for signs of swelling or bulging.
    • Check for discoloration or leakage.

Revision History


VersionDescriptionSectionDate
1.0Initial Release—2024-OCT-11

For More Information

For further assistance or for more information about this field notice, contact the Cisco Technical Assistance Center (TAC) using one of the following methods:

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