What is the best way to store lithium batteries long term?

For long-term storage of lithium-ion batteries, follow these guidelines to ensure their longevity and performance:

1. Temperature: Store batteries in a cool, dry place. The ideal temperature range is between 20°C (68°F) and 25°C (77°F) .
2. Charge Level: It is recommended to store lithium-ion batteries at approximately 40-60% charge to maintain their health. Storing them fully charged or completely discharged can lead to deterioration .
3. Humidity: Keep batteries in a dry environment to prevent moisture-related issues .
4. Safety: Use fire-resistant containers for added safety, especially if storing multiple batteries .

By adhering to these practices, you can extend the lifespan and reliability of your lithium batteries, ensuring they are in optimal condition when needed.