Lithium polymer (LiPo) batteries have become increasingly popular in recent years due to their high energy density, light weight, and compact size. However, they are not without their issues. One of the most common problem encountered with LiPo battery puffing or is swelling. In this blog post, we will explore what causes LiPo batteries to puff and how to prevent it from happening.
What are LiPo batteries?
LiPo batteries are a type of rechargeable battery that uses lithium-ion technology. They are commonly used in small electronic devices such as remote control cars, drones, and cell phones. Unlike other rechargeable batteries, LiPo batteries have a polymer electrolyte instead of a liquid one, which allows for a more compact and lightweight design.
Why do LiPo batteries puff?
LiPo batteries can puff for a variety of reasons. The most common cause is overcharging or over-discharging. When a LiPo battery is overcharged or over-discharged, it can cause the electrolyte to break down, leading to a build-up of gas inside the battery. This gas causes the battery to swell or puff up, which can be dangerous.
Another cause of LiPo battery puffing is physical damage. If a LiPo battery is punctured or crushed, it can cause the electrolyte to leak out, which can also lead to swelling.
Lastly, LiPo batteries can puff due to age and wear. Over time, the electrolyte inside the battery can break down, leading to a build-up of gas. This is more likely to happen if the battery is used frequently or exposed to high temperatures.
What are the dangers of LiPo battery puffing?
LiPo battery puffing can be dangerous for several reasons. First, it can cause the battery to become unstable, which can lead to a fire or explosion. Second, it can cause damage to the device the battery is powering. If the battery swells too much, it can put pressure on the internal components of the device, causing them to break or malfunction. Lastly, if the battery is punctured or crushed, it can release toxic chemicals, which can be harmful to humans and the environment.
How to prevent LiPo battery puffing?
Preventing LiPo battery puffing requires a combination of proper handling, charging, and storage. Here are some tips to help prevent LiPo battery puffing:
When handling LiPo batteries, it is important to avoid puncturing or crushing them. LiPo batteries should be stored in a protective case or bag when not in use to prevent physical damage. If a LiPo battery does become damaged, it should be disposed of properly.
LiPo batteries should be charged using a charger specifically designed for LiPo batteries. It is important to follow the manufacturer’s instructions for charging the battery, as overcharging or undercharging can lead to puffing. It is also important to monitor the battery while it is charging to ensure it does not overheat.
LiPo batteries should be stored in a cool, dry place away from direct sunlight and heat sources. They should also be stored at the recommended voltage level. If a LiPo battery will not be used for an extended period of time, it should be stored at a partial charge (around 50% capacity).
How to handle a puffed LiPo battery?
If you notice that your LiPo battery has started to puff, it should be handled with care. Do not puncture or crush the battery, as this can cause it to release toxic chemicals or catch fire. Instead, remove the battery from the device it is powering and place it in a fireproof container. LiPo batteries should be disposed of properly at a recycling center or hazardous waste disposal facility.
LiPo battery puffing can be a serious issue, but it can be prevented with proper handling, charging, and storage. If you do encounter a puffed LiPo battery, it is important to handle it with care and dispose of it properly to avoid any potential hazards. By following these guidelines, you can help ensure the safe and effective use of your LiPo batteries and the devices they power.