What are Lithium-ion Batteries?Since their introduction in 1991, lithium-ion (Li-ion) batteries remain popular among small and large corporations alike due to their long lifespans and lightweight designs. Today we use them as the main power source for smartphones, laptops, tablets, military drones, and even electric cars. However, if lithium batteries are not stored properly, they can be extremely dangerous. In this article, we’ll offer some suggestions on how to store lithium batteries.
Tips for Lithium-ion Battery Storage: Temperature and Charge
Temperature is vital for understanding how to store lithium batteries. The recommended storage temperature for most is 59° F (15° C)—but that’s not the case across the board. So, before storing lithium batteries, thoroughly read labels on proper storage for your specific battery type. Lithium battery storage buildings with climate control are ideal for storing bulk quantities of Li-ion batteries at specific temperatures to ensure a safe storage environment.
Also, be aware of the state of charge while storing. Nickel and lithium-ion batteries should be stored at around 40% state of charge. Lithium-ion batteries might become unstable if not stored at their proper levels. Be sure to know the specifics unique to YOUR battery. To ignore such information may cause excessive heat to damage the battery internally and potentially create a fire event. Some batteries specify a charge between 30% and 50%. The cells can be stored fully discharged, although the cell voltage should not drop below 2.0 for optimal safety. The maximum voltage should not exceed 4.1 volts. Always follow the charging instructions provided with each Li-ion battery.
How to Store Lithium-ion Batteries: Maintenance and Handling Precautions
- Monitor battery charge status while charging
- Ensure temperature controls are set to specified temperatures
- Observe run time with a fully-charged battery
- Ensure batteries self-discharge
- Check batteries before placing them in storage for irregularities in charge status
- Avoid exposing Li-Ion batteries to excessive vibration
- Do not keep batteries in high OR low temperatures
- Always handle batteries with caution
- Place batteries in storage after the building reaches compliant temperature levels
- Do not use damaged batteries
- In case of contact with fluid do not rub eyes. Immediately flush eyes at an eyewash station
- Wash hands after handling batteries