Säilytystaajuudet

Säilytystaajuudet, meaning storage frequencies in Finnish, refers to the practice of using specific, often low, frequencies when storing certain types of energy, particularly in relation to electrical systems and batteries. This concept is most relevant in the context of battery management and longevity.

When a battery is not in active use and is intended for long-term storage, it is often recommended to charge it to a particular level and then maintain it at a specific voltage or state of charge. This "storage frequency" is not a literal frequency in the sense of wave oscillations but rather a designation of the optimal charge level to prevent degradation. For many lithium-ion batteries, this optimal storage state of charge is typically around 40-60%. Storing batteries at very high or very low charge levels for extended periods can accelerate capacity loss and reduce their overall lifespan.

The underlying principle is to minimize electrochemical stress on the battery cells. High states of charge can lead to increased degradation mechanisms, while very low states can risk over-discharge, which can cause irreversible damage. Therefore, understanding and applying the appropriate säilytystaajuudet for a given battery technology is crucial for maintaining its performance and extending its service life, especially for devices or systems that are not used daily or are stored for significant durations. This practice is common in consumer electronics, electric vehicles, and energy storage systems.