During this time, the saltwater can corrode the aluminum terminals of a LiPo battery, resulting in electrolyte solution leaking out to the water. Discharging a battery in saltwater is a very slow process that can take several days to a few weeks. This method has become heavily contested, as many users have argued that not only was it ineffective, but it was also dangerous. In the past, some battery manufacturers recommended submerging the LiPo batteries in saltwater as a means of discharging them. This decreases the chances that the LiPo battery will cause a fire, should its terminals somehow accidentally get connected and form a circuit. Once you have decided to stop using your swollen LiPo battery, your next order of business should be to dispose it properly.īefore disposal, it is considered good practice to discharge the swollen LiPo battery completely. You cannot fix it, and you should look for a replacement battery as soon as possible. The first thing you should know is that a swollen LiPo battery is a lost cause. What should I do with a swollen LiPo battery? However, improper maintenance of the battery can accelerate the decomposition process. Electrolyte decomposition is a naturally occurring process, albeit it should be a slow one. One thing to remember about battery swelling is that it cannot be avoided. The chances of a LiPo battery charging fire is even higher once electrolytic decomposition has kicked in, as the oxygen-rich gases are very flammable. There have been a lot of instances of LiPo batteries catching fire while they are plugged in. The production of these gases is what causes the case of the LiPo battery to expand and swell. In the case of LiPo batteries, the polymeric nature of the electrolyte means that they also tend to produce carbon dioxide (CO 2) and carbon monoxide (CO) when they decompose. For most cases, these components include oxygen. As its name implies, this is the process where the electrolyte solution decomposes into its individual components. A LiPo battery also has polymer separator that keeps the positive and negative terminals from coming into contact with each other.īatteries swell because of the phenomenon of electrolyte decomposition. Through this solid electrolyte, lithium ions can move between the two terminals of a LiPo battery. LiPo batteries are distinct from the old-fashioned lithium ion batteries due to their use of a solid polymer electrolyte. These ions can travel through the electrolyte solution. Batteries conduct electricity via the migration of ions from the positive end to the negative end and vice-versa. All batteries are made with three basic components: a negative end, a positive end, and an electrolyte solution. To understand why a LiPo battery (or any other battery, for that matter) swells, we need to understand how its individual components interact to make the battery work. It will only get worse over time, and you can only push your luck so much. You should be looking for a replacement as soon as your battery starts to show some swelling. Only use official chargers and do not assume fireproof containers are foolproof. Never leave charging batteries unattended. A swollen LiPo battery is also particularly sensitive to mechanical failure of the casing, so avoid having sort of impact come into it. If you must, have it charged away from flammable materials or in a fire-proof container. In fact, you should not try to charge them. Special care must be taken when charging a swollen LiPo battery. It is generally not recommended to continue using a swollen LiPo battery, although it is still possible to use on for a few more times until you get a replacement (this is extremely risky and should be avoided). What should you do when your LiPo battery starts to swell up? Is there any way that it can still be saved? Read on to find out. LiPo batteries, the preferred battery types for drones, are not immune from swelling or puffing. If you’ve ever held on to a laptop or mobile device for two or three years, then you have probably observed how the battery tends to puff up after some time. Swelling or puffing of batteries is nothing new. 3D Insider is ad supported and earns money from clicks, commissions from sales, and other ways.
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