Common Questions About Lithium-ion Batteries - Lion Energy

Aug. 25, 2025

Common Questions About Lithium-ion Batteries - Lion Energy

If you've been shopping around for a lithium-ion battery or portable power unit, then you've probably come across a lot of questions that people are asking about these. Most people have heard of lithium-ion batteries, but that doesn't mean that they know a lot about them. So what should you know about lithium before you buy?

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As a consumer, let's hit pause and take a look at some of the most common questions people ask about lithium-ion rechargeable batteries and generators.

Are Lithium-ion Batteries Safe?

One of the top questions people ask about lithium batteries is whether or not they are safe to use. A lot of these concerns come from stories of these batteries exploding unexpectedly, but rest assured that these are extremely rare occurrences. Lithium-ion batteries are actually considered relatively safe compared to other batteries. And not all lithium is the same. Lithium iron phosphate batteries are the highest quality and safest type of lithium. Lithium polymer is the type of lithium in cell phones and hoverboards.

That being said, there is always the possibility of a random battery malfunctioning or operating incorrectly. Some things to watch for are weird smells, overheating, swelling, or leaking. Again, these are rare things to see in these batteries, but it's best to know what to look for in case there is a risk of fire or explosion.

Something you should be careful of with lithium-ion batteries is air travel. You can take these batteries on airplanes safely, but you can only take up to a certain size of battery onto an airplane. Check the restrictions on lithium-ion batteries for your airline before flying and you should be safe from battery malfunctions as you fly.

Why Choose Lithium-ion Over Lead-acid?

People sometimes buy lead-acid batteries when they need portable power. While lead-acid batteries can work, there are actually several disadvantages to choosing lead-acid batteries over lithium-ion batteries.

The biggest advantage of lithium-ion batteries over lead-acid batteries is the maintenance. Lead-acid batteries require a fair amount of maintenance the whole time you have them. They need to be cleaned and stored at proper temperatures for safety and longevity. And you can only use about half the stated energy of lead acid batteries, not to mention they are much heavier. On the other hand, lithium-ion batteries typically need no maintenance, can use all the stated energy and are lighter weight.

Another advantage of lithium-ion is its ability to hold a charge. When you use a lead-acid battery you have to be careful with the level of charge left in the battery. If you completely drain the battery, it can damage it. Lithium-ion batteries can be completely drained and recharged over and over again without damage. Additionally, if a lead-acid battery sits on a shelf fully charged, the charge will drain out in a couple of months. But a good lithium-ion battery can maintain a full charge for up to a year or more.

What Can You Use Lithium-ion Batteries For? How Long Can You Use Them?

Lithium-ion batteries can be used for a lot of different things. Smaller batteries or portable power units can be used to charge phones and laptops and even run lights for several hours. Larger units are capable of much more, powering things like TVs, refrigerators, and even RVs.

Because these batteries are so versatile, it's hard to say exactly how long the charge will last. Much of that depends on the size of the battery, how much power is needed to run or charge the device you're using, and how long you have the battery attached to the device. However, most batteries are able to run a device or appliance for several hours at a time.

How Durable Are Lithium-ion Batteries?

The durability of lithium-ion batteries depends a lot on the brand of battery you purchased. Some are designed for affordability over durability. That doesn't mean the batteries can't be effective but they may not last as long as more durable batteries.

The best lithium-ion batteries are built with a rugged, durable design that lasts a long time. They're made to be taken anywhere - camping, hiking, fishing, tailgates, road trips, and who knows where else - without being damaged. These batteries can last years if they’re well-built.

How Do You Dispose of Lithium-ion Batteries?

Because lithium-ion batteries are built with a variety of valuable materials and potentially hazardous chemicals, you can't just throw them into your municipal trash or recycling. If you do, they could cause fires or contaminate the environment. Instead, you need to make sure that they are disposed of properly.

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To dispose of a lithium-ion battery correctly, you need to take it to a collection point for battery recycling or hazardous materials. This ensures that it is disposed of properly and not mixed in with the municipal trash. It's also a good idea to put the batteries in plastic bags or to cover the battery terminals with tape or plastic. Doing so will keep the battery from coming into contact with other metals and reduce the risk of fire.

If you choose to purchase a high-quality lithium-ion battery, you should be able to have it for several years at least before needing to dispose of it. But as the battery wears out, then it needs to be disposed of in a way that is safe for everyone and the environment. You'll need to check local guidelines for battery disposal to ensure that your batteries are disposed of properly.

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3 Powerful Questions We Get Asked About Lithium-ion Batteries

Whether you realize it or not, millions of people use lithium-ion batteries each day. Modern technology such as cell phones, laptops, power tools, hybrid vehicles, and medical technology rely on these batteries to function. As many people have started to ditch their lead-acid power sources, they set out on a search for the best alternative. Lithium-ion batteries have become a popular source of power for its long-lasting and environmentally friendly characteristics.

Let’s unpack exactly how lithium-ion batteries work. Though not all will appear the same on the outside, they all have the same basic makeup. Every lithium-ion battery will have an anode and cathode that store lithium ions on opposite ends of the battery. When the ions flow from one side to the other, they pass through the separator. This element also prevents the flow of electrons. Electrolyte is the liquid that carries the positively charged lithium ions back and forth from the anode and the cathode. Lastly, the positive and negative ends of the battery are the current collectors.

The movement of ions in the anode creates free electrons that charge at the positive end. It moves into the device that is being powered, such as a cell , and back into the battery on the negative end. This process of providing an electrical current is called discharging. When you charge the battery, the opposite occurs. The lithium ions move from the negative end into the positive end.

When compared to other UPS batteries, such as lead-acid or nickel-cadmium, the lithium-ion battery’s design makes it a viable alternative. Its long lifespan and faster charging times is only a small part of why so many people prefer these power sources to its competitors. However, we know people can be hesitant to make the switch to lithium-ion batteries. We want to answer some of the most common and important questions about lithium-ion batteries.

Do Lithium-ion Batteries Leak?

Due to their makeup, lithium-ion batteries do not leak toxic gas! The battery is designed to prevent leakage when damaged. Modern technology has also found a way to distinguish lithium-ion batteries from others by using gel instead of acid. This reduces the risk of leakage tremendously.

However, if the battery is not used correctly and gets overheated, it does have the potential to combust. Almost all lithium-ion batteries produced by a reputable source are made with a battery management system that will automatically cut off power if the temperature rises to a dangerous high. These systems are extremely effective in preventing the battery from overheating. This also ensures that the battery remains usable and keeps the user safe. Keeping batteries at room temperature is essential to ensure that they do not receive any damage from excess heat.

How Long Do They Last?

Lead-acid batteries can cause long term trouble for users. On average, you need to replace these power sources every five years, but numerous factors can make their life span even shorter. The cost of maintenance and their unreliability make their cost increase substantially over time. These batteries can be a hassle and end up costing more than you initially planned. Lithium-ion batteries have a reduced maintenance time due to integrated monitoring equipment. With this power source, maintenance check-ups are not required because you can constantly monitor the condition of your batteries.

Though some factors can shorten the lifespan of lithium-ion batteries, they are considerably more reliable than lead-acid batteries. Discharge is important to look at as different types of batteries must be recharged at a specific discharge depth. It is recommended that lead-acid batteries are recharged at 50% depth and will need to be replaced after 1,500 charge cycles. Meanwhile, lithium-ion batteries can be used completely before needing to be recharged and will last for 6,000 charge cycles. That is roughly 20 years, before needing to be replaced. With lead-acid batteries taking twice as long to charge, lithium-ion batteries are proven to be a more efficient option.

Are Lithium-ion Batteries Safe and Reliable?

Overall, lithium-ion batteries are safe and the percentage of lithium-ion batteries that experience heat related failures is low. They do not release toxic gas and have more safety features than any other UPS battery. In fact, you cannot purchase one of these batteries in a store and only approved assemblers are allowed access to purchase lithium-ion cells. This is to ensure that the number of unsafe battery packs on the market is limited. These safety precautions prevent subpar batteries from being easily accessible.

Though these safety incidents are few and far between, there is always risk when dealing with power and it is always smart to remain cautious. When a battery is operating as normal, it is designed to power-down when it short circuits. However, if microscopic metal pieces are inside the battery, it will continue operating and it can be hard to know that the battery is defective. Having your batteries, no matter which UPS you use, tested is important to ensure they are safe for use.

Lithium-ion batteries are extremely reliable. These UPS batteries are designed to consistently pull a restorative charge from the power source to ensure you have a constant power supply. Their built-in monitoring systems have revolutionized the battery industry, with safety being a priority. Lithium-ion batteries are your best option for making sure your system is running smoothly for years to come.

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