Quick Answer
Store lithium batteries in a cool, dry place away from metal objects, and keep them charged between 20-50% depth of discharge (DOD) to prolong their lifespan.
Charge Management
When storing lithium batteries long-term, maintaining a charge level between 20-50% DOD is crucial. This range helps prevent damage from both undercharging and overcharging. For example, the Tesla Powerwall recommends storing the battery at 50% state of charge for optimal lifespan.
Temperature Control
Temperature fluctuations can significantly impact lithium battery performance. Store batteries in a location with a consistent temperature between 50°F to 80°F (10°C to 27°C). Avoid direct sunlight, as it can cause battery degradation. For instance, a lithium-ion battery’s lifespan can be reduced by up to 20% for every 10°C (18°F) increase in temperature above 25°C (77°F).
Separation and Protection
Keep lithium batteries away from metal objects, as they can cause a short circuit and damage the battery. Store them in a protective case or bag to prevent physical damage. Ensure the storage area is well-ventilated and free from flammable materials.
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