what soc should battery be for storage

When it comes to storing batteries, it’s important to consider the state of charge (SOC) that the batteries should be at. The SOC refers to the percentage of energy remaining in a battery compared to its fully charged state. This is an important factor to consider, as improper storage of batteries can lead to degradation and potential safety hazards.

When storing batteries, the recommended SOC will depend on the type of battery being stored. Lead-acid batteries, for example, should be stored at a higher SOC, ideally around 75-80%. This helps to prevent the batteries from sulfating, a process where lead sulfate crystals form on the plates and can reduce the battery’s capacity. Conversely, lithium-ion batteries should be stored at a lower SOC, typically around 40-50%. Storing lithium-ion batteries at a high SOC can cause stress on the battery, leading to degradation and a shortened lifespan.

In addition to the SOC, there are a few other factors to consider when storing batteries. Temperature plays a crucial role, as extreme temperatures can affect the performance and longevity of a battery. Ideally, batteries should be stored in a cool, dry place to minimize the effects of temperature on the battery’s chemistry.

Proper ventilation is also important when storing batteries, especially lead-acid batteries which emit gases during charging and discharging. Ensuring that the storage area is well-ventilated can help to prevent the buildup of potentially hazardous gases.

It’s also important to store batteries in a secure and stable manner to prevent any damage that could lead to leakage or electrical problems. This means storing batteries in a stable position and protecting them from any potential impacts or vibrations.

Overall, the recommended SOC for storing batteries will vary depending on the type of battery, but in general, it’s important to store batteries at a moderate level of charge to prevent degradation and ensure their longevity. By considering the SOC, as well as factors such as temperature, ventilation, and storage stability, you can help to maintain the performance and safety of your stored batteries.