Product Safety


    Lithium-ion Batteries


    Lithium-ion batteries represent the most advanced re-chargeable battery technology in general use today and are found in handheld electronical equipment like mobile phones, cameras, portable PCs, as well as all modern B&K Sound Level Meters and other measuring equipment.

    The energy density of Li-ion batteries exceeds that of traditional rechargeable battery technologies – this requires some attention during transport, use and waste-handling.


    All Li-ion Battery Packs supplied by B&K are classified as UN 3480/UN 3481, and

    • Comply with applicable transportation regulations including

      -IATA "Dangerous Goods Regulation" (International Air Transport Association)

      -ICAO "Technical Instructions..." (International Civil Aviation Organisation)

      -CAAC "Transport regulations for Lithium batteries" (Civil Aviation Administration of China)

      -IMDG Code (International Maritime Dangerous Goods), and

      -IEC 62281 "Safety of primary and secondary lithium cells and batteries during transport"

    • Have been tested according to the UN "Regulation on the Transport of Dangerous Goods" Sec. 38.3

    • Have a rated capacity of less than 100 Wh corresponding to an equivalent Lithium content of less than 8 g - i.e. need not to be handled as Dangerous Goods

    When travelling by air Li-ion spare batteries must be in carry-on luggage - they are not allowed as checked-in luggage. Batteries installed in equipment are not covered by this restriction.

    Before shipping a Li-ion battery, either as spare battery or as part of an instrument, make sure that it isn't damaged in any way.


    Charging B&K supplied Li-ion batteries must only be done by inserting it into the original product, or charging it with a dedicated B&K Li-ion charger.

    Instruments with batteries being charged will become warm, especially when constantly charged and/or being inside a suitcase or the like. A temperature sensor will automatically shut down charging before it becomes too warm.

    Ageing The ageing of Li-ion batteries is influenced by three main factors:
    • the time since the cells were manufactured,
    • the temperature of the battery above 0°C, and
    • the number of times it has been charged.

    Li-ion batteries will typically last for 2-4 years or up to 1000 charge/discharge cycles depending on the conditions of use and storage (e.g. storage at 25°C will permanently reduce the capacity by 20% per year).

    When the battery is no longer able to hold a useful amount of charge, it is time to exchange the battery with a new one.

    Waste Handling

    Avoid any contact with the Li-Ion cells inside the Battery Pack - wear gloves and safety glasses if it can not be avoided.

    Discarded batteries should be disposed of locally by using the appropriate local return and collection systems.

    We help our customers measure and manage the quality of sound and vibration in their products and in the environment

    Brüel & Kjær Sound & Vibration Measurement A/S. P +45 77 41 20 00. F +45 45 80 14 05.
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