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IEEE 1725 Standard & Sections


SGS USTS had a leadership role in development of IEEE 1725 and the CTIA battery certification working group
Over 25 years Experience in Energy Storage System Design, including

  • Specification Development
  • Testing and Validation - Cell Manufacturing Audits
  • Failure Modes Effects Analysis (FMEA)

SGS can validate battery compliance to other national and international battery standards:

  • United Nations ST/SG/AC.10/27/Add.2
    • Required  by FAA for shipping Li-Ion batteries (above X kg total)
  • UL 1642
    • Applicable Li-Ion “Cells” Only
  • UL 2054
    • Applicable for “Batteries” Li-Ion and others…(NiMH, NiCad)
  • IEC 62133
    • Safety Requirements for “Batteries”
  • IEC 61960
    • Battery Performance
  • IEC 61959
    • Mechanical Tests for Batteries
  • GB/T 18287
    • China Standard for Batteries (Safety, and Performance

Reliability Testing for Rechargeable Batteries of Portable Electronic Products

  • Electrical Test
  • Nail Penetration Test
  • Thermal Exposure Test
  • Vibration Test
  • Altitude Test
  • Crush Test
  • Free Fall Test
  • Mechanical Shock Test
  • Impact Test

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IEEE 1725 Standard

What is IEEE 1725?
IEEE 1725 Standard for Rechargeable Batteries for Cellular Telephones (Cellular Telephone system standard)

Scope: This standard establishes criteria for design analysis for qualification, quality, and reliability of rechargeable lithium ion and lithium polymer batteries for cellular telephone applications. Also included in the standard are:

  • battery pack electrical and mechanical construction
  • packaging technologies
  • pack cell level charge and discharge controls and overall system considerations.

Purpose: The purpose of this standard is to ensure reliable user experience and operation of cell phone batteries.

Reason: No industry-wide standard exists, and this lack of standardization results in difficulties in the evaluation of the lithium-ion battery for cell phone applications. The users of this standard will be battery cell phone manufacturers, battery pack manufacturers, cell phone manufacturers, carriers, and users.

No single piece (cell, battery, charger, or phone) can be compliant alone.  The combination of pieces is compliant. It started as an attempt to “Raise the bar” for battery safety and quality assurance and ended up being slightly watered down to get the majority to agree.

Current standards integrated into 1725.

Shall

  • UN (ST/SG/AC.10/11)Batteries/Cells
  • UL 1642Cells
  • Appropriate safety standard of destination country for AC and DC chargers

Should

  • IEC 60950-1AC Charger
  • UL 60950AC Charger
  • UL 1310AC Charger
  • UL 2089DC Charger
  • UL 2054Batteries
  • IEC 62133Batteries/Cells
  • IEC 61960Batteries/Cells

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IEEE 1725 Sections

System Integration Considerations include provisions for conducting design analyses for cell, pack, host devices and power adapters and an overall system level design analysis of the combination of these, including the end user.

Cell Considerations include the precautions and considerations required for design, manufacturing, and testing of rechargeable Li-Ion and Li-Ion Polymer cells over their product lifetime to minimize latent problems and increase reliable user experience. Emphasis on cell manufacturing process issues.

Battery Pack Considerations
Host Device Considerations

AC/DC Adapter, DC/DC Adapter/Charger Considerations

Total System Reliability Considerations

System Security Considerations

Challenges in Implementing 1725

Showing compliance

  • Creation of IEEE1725 validation sub-WG to CTIA Certification Program Working Group
  • Verizon will require 1725 compliance and will not allow self certification.

Third Party Accessories

  • Third party manufactures can show compliance to a specific section of 1725 (Cell/Battery or Charger), but not 1725 compliant until show that the system is compliant.

Consumer Education

  • Difference between 1725 compliant and non 1725 compliant products.

CTIA Certification Program

  • CTIA Validation activities started in December 2005
  • CTIA will administer a certification program to IEEE 1725
  • Creation of Certification Requirements Document
  • Creation of program management plan
    - Certification
    - Recognition
    - Sub-system reuse
  • CTIA to launch battery program in 2 phases
    - Phase 1. Registration Phase – October 16, 2006
    - Phase 2. Certification Phase - 3-12 months after Registration Phase?

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