Energy storage batteries must be tested

What are battery safety standards?

Various battery safety standards have been drafted and Table 1 reports a summary of the most frequently required battery safety standards and regulations related to LiBs. The safety standards have been formulated in order to ensure proper quality control before mass production or sale.

Does an energy storage system need to be UL listed?

If an ESS were comprised of a battery (listed to its component-level standard, UL 1973) and a battery inverter (listed to yet another standard, UL 1741) packaged and designed to work together as an energy storage system, they must be tested and listed as such. This ensures that safety is retained at an integrated system level.

Does certification of battery standards ensure a Lib's safety?

Overall, while certification of battery standards does not ensure a LiB’s safety, further investigations in battery safety testing and the development of new standards can surely uncover the battery safety issues to assist efforts to ensure that future generations of LiBs are safer and more reliable.

Do electric energy storage systems need to be tested?

It is recognized that electric energy storage equipment or systems can be a single device providing all required functions or an assembly of components, each having limited functions. Components having limited functions shall be tested for those functions in accordance with this standard.

What is a battery safety test?

This type of test aims to reproduce a battery safety accident originating from an electrical malfunction. 4.1.1. Overcharge Overcharge is considered the harshest abuse condition and the most detrimental one because continuous charging energy is transferred to the LiB, accelerating exothermic reactions.

What are the most common battery safety tests?

Overcharging and thermal abuse testing remains the most documented battery safety tests in the literature and the most observed reasons for battery safety accidents.