UN38.3 Lithium Batteries

UN38.3 is a set of safety performance test standards for lithium batteries, which aims to ensure that lithium batteries do not cause fire, explosion and other safety accidents during transportation.

UN38.3 Test standards apply to various types of lithium batteries, including but not limited to:

All kinds of lead-acid battery (such as lead-acid battery for automobile startup, fixed lead-acid battery, etc.).

All kinds of power secondary batteries (such as power vehicle battery, electric road vehicle battery, etc.).

All kinds of mobile phone batteries (such as lithium ion batteries, lithium polymer battery, etc.).

All kinds of small secondary batteries (such as laptop battery, digital camera battery, etc.).

UN38.3 testing consists of multiple items to comprehensively assess the safety of lithium batteries.

These projects mainly include:

Height simulation: Simulate the height changes that lithium batteries may encounter in air transport.

High and low temperature cycle: test the stability of lithium battery in high temperature and low temperature environment.

Vibration test: simulate the vibration of lithium battery during transportation.

Impact test: test the tolerance of lithium battery to external shocks.

55℃ external short circuit: test the short circuit reaction of the lithium battery at a specific temperature.

Impact test: to simulate the safety performance of the lithium battery upon impact.

Overcharging test: test the stability of the lithium battery under overcharging conditions.

Forced discharge test: test the safety performance of lithium battery under forced discharge conditions.

The judgment standard of the UN38.3 test project is very strict, usually requiring the battery in the test process, no leakage, no exhaust, no disintegration, no rupture, no fire and other phenomena.

At the same time, the battery performance after the test also needs to meet certain requirements, such as the open-circuit voltage is not less than 90% before the test.

UN38.3 Test report is one of the necessary documents for air transportation of lithium batteries.

Airlines, airports and freight forwarders usually require UN38.3 test reports to prove their safety when receiving lithium battery cargo.

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