UL 9540 2023 New Version Amendment,
UL 9540,

▍Document requirement

1.  UN38.3 test report    

2.  1.2m drop test report (if applicable)   

3.  Accreditation report of transportation             

4.  MSDS(if applicable)

▍Testing Standard

QCVN101：2016/BTTTT（refer to IEC 62133：2012)

▍Test item

1.Altitude simulation      2. Thermal test               3. Vibration    

4. Shock                   5. External short circuit          6. Impact/Crush

7. Overcharge              8. Forced discharge             9. 1.2mdrop test report

Remark: T1-T5 is tested by the same samples in order.

▍ Label Requirements

Label name	Calss-9 Miscellaneous Dangerous Goods	Cargo Aircraft Only	Lithium Battery Operation Label
Label picture

▍Why MCM?

● The initiator of UN38.3 in the transportation field in China;

● Have the resources and professional teams being able to accurately interpret UN38.3 key nodes related to Chinese and foreign airlines, freight forwarders, airports, customs, regulatory authorities and so on in China;

● Have resources and capabilities that can help lithium-ion battery clients to “test once, pass smoothly all airports and airlines in China “;

● Has the first-class UN38.3 technical interpretation capabilities, and housekeeper type service structure.

On June 28th 2023, the standard for energy storage battery system ANSI/CAN/UL 9540:2023：Standard for Energy Storage Systems and Equipment issues the third revision. We will analyze the differences in definition, structure and testing.For Battery Energy Storage System (BESS), the enclosure should meet UL 9540A Unit Level testing.
Gasket and seals can comply with UL 50E/CSA C22.2 No. 94.2 or comply with UL 157 or ASTM D412If BESS uses metallic enclosure, that enclosure should be noncombustible materials or comply with UL 9540A unit.
ESS enclosure should have certain strengthen and rigidity. This can be proved by passing test of UL 50, UL 1741, IEC 62477-1, UL 2755, ISO 1496-1 or other standards alike. But for ESS less than 50kWh, the strengthen of enclosure can be evaluated through this standard.
Walk-in ESS unit with explosion protection and venting.Software that can be remotely upgraded should comply with UL 1998 or UL60730-1/CSA E60730-1 (Class B software)
ESS with lithium-ion batteries capacity of 500 kWh or greater should be provided with an external warning communication system (EWCS) so as to give an advance notification to operators of a potential safety issue.Installation of EWCS should reference NFPA 72. Visual alarm should be in accordance with UL 1638. Audio alarm should be in accordance with UL 464/ ULC525. The maximum sound level for audio alarms shall not exceed 100 Dba.ESS containing liquids, including ESS with coolant systems containing liquid coolant, shall be provided with some means of leak detection to monitor for loss of coolant. Coolant leaks that are detected shall result in a warning signal to the ESS monitoring and control system and shall initiate an alarm if provided.