How long can lithium and lipo batteries be stored?

Ideally, a lipo-battery should not be kept at full charge for extended periods. The chemical composition of these batteries makes them susceptible to degradation when stored at high voltage levels.

When it comes to storing a lipo battery, several factors play a crucial role in maintaining its health and longevity. Let's delve into the ideal storage conditions:

Temperature

Temperature is a critical factor in LiPo battery storage. The optimal temperature range for storing LiPo batteries is between 0°C and 25°C (32°F to 77°F). Extreme temperatures, both hot and cold, can adversely affect the battery's chemistry and lead to reduced capacity or even permanent damage.

Humidity

Humidity is another crucial factor to consider when storing LiPo batteries. High humidity levels can lead to condensation, which may cause corrosion or short circuits within the battery. It's recommended to store LiPo batteries in a dry environment with relative humidity below 65%.

Charge Level

The charge level at which you store your LiPo battery significantly impacts its longevity. For long-term storage, it's recommended to keep the battery at approximately 50% charge (3.8V per cell for a 14s battery). 

This storage voltage helps prevent both over-discharge and overcharge conditions, which can degrade the battery's performance over time.

Avoid Storing at Full Charge for Extended Periods: It’s crucial not to leave your LiPo battery at full charge for more than 2-3 days. Storing the battery at high voltage levels for prolonged periods can cause stress to its internal components, leading to degradation. Keeping it at full charge over time can reduce its overall lifespan, so it's best to discharge the battery to a lower level when not in use.

Best Practices for Storing a Fully Charged Lipo Battery

While it's generally not recommended to store a lipo-battery at full charge for extended periods, there may be instances where you need to keep your lipo battery ready for immediate use. In such cases, following best practices can help mitigate potential risks and preserve battery health:

1. Use a fireproof LiPo safe bag or container for storage

2. Keep the battery in a cool, dry location away from flammable materials

3. Regularly inspect the battery for any signs of swelling or damage

4. If storing for more than a week, consider partially discharging the battery to about 80-90% capacity

5. Use a smart charger with a storage mode function to maintain the optimal voltage level

In conclusion, while the lipo-battery is a powerful and versatile energy source, proper care and storage are essential to maintain its performance and safety. By following the guidelines outlined in this article, you can ensure that your LiPo battery remains in optimal condition, ready to power your devices when needed.

If you have any questions about LiPo battery care or are looking for high quality lipo battery solutions, please feel free to contact us at levin@cebattery.com. We're here to help you power your projects safely and efficiently.

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