Battery Laboratory

Product Testing

Battery Testing Laboratory

Battery testing methods are essential to evaluate battery performance, capacity, safety, and longevity. Key testing techniques include capacity measurement, internal resistance testing, ESD testing, vibration, and thermal imaging. These methods help users ensure batteries operate reliably and safely across applications.

The tests that are performed according to national and international standards are as follows:

Performance:

  • charge and discharge

    The cell or battery is charged and discharged at various temperatures including: -20 °C, 0 °C, 45 °C, 60 °C, and etc.

  • internal resistance

    The internal AC resistance, Rac, is given by: R_ac=U_a⁄I_a

  • Electrostatic discharge (ESD)

    The batteries shall be tested for contact discharge at 4kV and air discharge at 8kV.

  • Endurance in cycles

  • Storage

    The cell or battery shall be stored in an ambient temperature of 40 °C±2 °C, for 90 days.

  • Recovery

    The cell or battery shall be stored in an ambient temperature of 20°C±5°C, for 28 days

Safety:

     2. Mechanical tests

  • Vibration

  • Shock

  • Crash hazard

    The force for the crushing is applied by a device exerting a force of 13kN ± 0.78kN.

  • Free Fall

    Each cell or battery is dropped three times from a height of 1.0 m onto a flat concrete floor or metal floor

     3. Electrical tests

  • Force discharge

    The discharged cell is subjected to a forced discharge at 1 It A to the negative value of the upper limit charging voltage. The total duration for the forced discharge testing is 90 min.

  • External short circuit

    Fully charged cells in an ambient temperature of 55 °C ± 5°C short-circuited by connecting the positive and negative terminals with a total external resistance of 80Ω m ± 20 mΩ.

  • Continues charge

    Fully charged cells are subjected for 7 days to a charge using the charging method for current and standard voltage specified by the cell manufacturer.

  • Overcharge

    Sample batteries shall then be charged at a constant current of 2.0 It A, using a supply voltage which is:
    • 1.4 times the upper limit charging voltage (but not to exceed 6.0 V) for single cell/cell block batteries or
    • 1.2 times the upper limit charging voltage. 1 per cel l for series connected multi-cell batteries.

List of safety test standards Battery in accordance with ISO/IEC 17025:

International/National standard Title of the standard
IEC 61056-1, INSO 4280-1
General purpose lead-acid batteries (valve-regulated types) – Part 1: General requirements, functional characteristics – Methods of test
IEC 61056-2, INSO 4280-2
General purpose lead-acid batteries (valve-regulated types) – Part 2: Dimensions, terminals and marking
IEC 61959, INSO 9481
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Mechanical tests for sealed portable secondary cells and batteries
IEC 61951-1, 9685-1
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Secondary sealed cells and batteries for portable applications – Part 1: Nickel-Cadmium
IEC 61951-2, 9685-2
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Secondary sealed cells and batteries for portable applications – Part 2: Nickel-metal hydride
IEC 61960-3, INSO 6618-3
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Secondary lithium cells and batteries for portable applications – Part 3: Prismatic and cylindrical lithium secondary cells, and batteries made from them
IEC 62281, INSO 10217
Safety of primary and secondary lithium cells and batteries during transport
IEC 62133-1, INSO 10218-1
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications – Part 1: Nickel systems
IEC 62133-2, INSO 10218-2
Secondary cells and batteries containing alkaline or other non-acid electrolytes – Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications – Part 2: Lithium systems