Lithium-polymer (LiPo) batteries are widely used in remote control (RC) cars, drones, and other electronic devices. They are known for their high energy density and long life, but one of the biggest concerns with LiPo batteries is how long they last in storage. In this blog post, we’ll take a closer look at how long LiPo batteries last in storage, and what you can do to extend their life.
When it comes to storage, the lifespan of a LiPo battery is affected by several factors, including the storage temperature, the storage voltage, and the storage state of charge (SOC).
The storage temperature is one of the most important factors that affect the lifespan of a LiPo battery. LiPo batteries should be stored in a cool, dry place, ideally between 40-60 degrees Fahrenheit. Storing LiPo batteries in temperatures above or below this range can significantly shorten their lifespan.
The storage voltage is also an important factor. LiPo batteries should be stored at a voltage of around 3.8-3.9 volts per cell. Storing them at a higher voltage can shorten their lifespan, while storing them at a lower voltage can cause them to become permanently damaged.
The storage state of charge (SOC) is another important factor. LiPo batteries should be stored at a SOC of around 50-60%. Storing them at a higher SOC can shorten their lifespan, while storing them at a lower SOC can cause them to become permanently damaged.
On average, a LiPo battery can last for up to a year in storage if stored properly. However, if stored under poor conditions, a LiPo battery can lose its capacity within a few months.
To extend the life of your LiPo batteries in storage, it’s important to follow these tips:
- Store them in a cool, dry place between 40-60 degrees Fahrenheit.
- Store them at a voltage of around 3.8-3.9 volts per cell.
- Store them at a SOC of around 50-60%.
- Store them in a fireproof container.
- Don’t leave them in a discharged state for long periods of time.
- Store them in a balanced state, meaning that all cells should have similar voltage levels.
- Check the battery’s voltage regularly and charge them to storage voltage if needed.
- Avoid storing them for longer periods than a year.
Maintaining the peak condition of your LiPo batteries requires proper care and handling. With the right approach, you can prolong the life of your batteries and ensure they are ready to use when you need them.
To keep your LiPo batteries in peak condition, it is important to:
- Avoid completely discharging the battery
- Avoid overcharging or over-discharging the batteries
- Limit the current discharge rate to the battery’s rated level
- Prevent overheating of the batteries
- Store, charge, and discharge them in a fireproof container, such as a LiPo safety bag or metal ammo box.
It is also important to keep an eye out for signs of damage or wear, such as swelling or puffing. If you notice any of these signs, it is best to dispose of the battery safely and immediately.
Swelling of LiPo batteries is a result of the gas generated by the decomposition of the battery’s electrolytic solution. By being mindful of these potential hazards, you can ensure that your LiPo batteries remain in peak condition and last longer than those of others. More detailed information on caring for LiPo batteries can be found in various resources.
In conclusion, LiPo batteries can last for up to a year in storage if stored properly, but their lifespan can be affected by factors such as storage temperature, storage voltage, and storage state of charge. By following the tips mentioned above and storing them in the right conditions, you can extend the life of your LiPo batteries and ensure they are ready to use when you need them.