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SLG testing services for batteries, cells and energy storage systems

SLG's approach to testing batteries and cells looks at the system the single cell or battery unit is part of - charger, energy storage and consumer. This enables us to simulate a set-up very close to the product's future actual implementation and to give a practical statement on parameters such as capacity and cycle stability.

Tests according to UN recommendations on the transport of dangerous goods, S. 38.3

Lithium-ion batteries are exposed to various climatic and mechanic stresses during transport. Therefore, every lithium-ion energy storage system must comply with the UN recommendations on  the transport of dangerous goods, Section 38.3. Proof of this is provided by specific testing methods simulating practical situations.

  • Low pressure, simulation of altitude → air transport at 15,000 m altitude
  • Temperature cycling → take-off and landing of an aircraft
  • Vibration   →   Vibrations during transport by truck or railway
  • Shock   →   Fall from a great height
  • External short circuit   →   Short circuit of poles due to inadequate packing
  • Impact   →   Damage, crushing during transport by forklift
  • Abnormal charging   →   Check of internal safety systems
  • Forced discharge   →   "Gradual" short circuit of poles

Safety test according to IEC/EN/UL 62133

During the safety test of lithium-ion batteries different situations which may occur in practice are simulated, such as:

  • Incorrect fitting of a cell
  • Over-charging
  • Mechanical shock and vibrations
  • Thermal abuse
  • Total discharge

Safety test according to IEC/EN 60086-4

We perform the following tests for primary lithium batteries:

  • Test A: Altitude
  • Test B: Thermal cycling
  • Test C: Vibration
  • Test D: Shock
  • Test E: External short-circuit
  • Test F: Impact
  • Test G: Crush
  • Test H: Forced discharge
  • Test I: Abnormal charging
  • Test J: Free fall
  • Test K: Thermal abuse
  • Test L: Incorrect installation
  • Test M: Overdischarge

Tests according to standard DIN EN 62841

We test energy storage systems as part of our product testing services according to standard DIN EN 62841 "Electric motor-operated handheld, transportable tools, lawn and garden machinery".

Fit-for-use of batteries and cells

We carry out fit-for-use and endurance tests for energy storage systems.

  • Charging process at different temperatures and currents
  • Discharging process at different temperatures and currents
  • Capacity measurement using various surrounding conditions and at different charging and discharging times
  • Capacity checks simulating practical situations
  • Cycle stability, endurance
  • Integration of charger and energy storage system
  • Handling and usability


Andreas Kékedi

+49 3722 7323-824