Safety is the state of being "safe" (from French sauf), the condition of being protected from harm or other non-desirable outcomes. Safety can also refer to the control of recognized hazards in order to achieve an acceptable level of risk.
Lithium-ion (Li-ion) batteries have revolutionised portable consumer electronics from cameras to cell phones to laptops. Validated safety testing of larger, higher-energy installations has paved the way to large-scale stationary applications as well.
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