All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(30739 products available)
There are several of these batteries available, and each one serves its purpose. Here are some common types:
Cylindrical 18650 Li-ion batteries
The cylindrical 18650 lithium-ion rechargeable batteries are popular because they're strong, keep a good amount of charge, and last a long time. With a diameter of 18 mm and a length of 65 mm, this battery gets its name from its size and shape, which looks like a tube. Its many uses include power tools, laptops, and electric bikes, where the strong energy density and consistent energy output are key. The smooth steel casing not only makes the battery tough but also helps prevent heat from building up during use. This battery's ability to be charged many times makes it less of a problem for landfills and helps users save money by not having to buy new batteries often.
LiPo 18650 Li-ion battery
A lithium polymer rechargeable battery, or LiPo battery, has a different design from the cylindrical one. It comes in many shapes and sizes. It is lighter and often thinner, even if it holds less charge than typical lithium-ion batteries. In portable devices where weight counts, like drones and some smartphones, these batteries are popular, plus electric vehicles where their adaptability matters more. Although a LiPo 18650 lithium-ion rechargeable battery's casing is more flexible, it's important to take care of it to avoid damage and get the most out of its efficient energy storage.
Flat-top vs. button-top 18650 batteries
The main difference between 18650 lithium-ion rechargeable batteries is the flat end or the button end. A button-top battery has a small bump on one end to help line things up when it's put in a device. A flat-top battery doesn't have this bump, making it harder sometimes to fit in devices or battery packs.
Which one is needed usually depends on the device or setup. A button-top battery is generally used in simple electronics like a handheld game. In larger setups, like power tools or electric bikes, a flat-top battery is more common because it fits better.
Energy storage systems
These 18650 lithium-ion rechargeable batteries are used in electrical grids, where they help keep a steady flow of power. By storing excess power when supply is high and releasing it when use is at its peak, these batteries support grid reliability. Their 36V design makes them great for large-scale energy storage solutions that deal with voltage levels common in industrial power grids. With a capacity of 4400 mAh, they can hold a lot of energy, making them useful for balancing supply and demand over many hours. This ability to store power helps prevent blackouts and makes it easier to use green energy sources like wind and solar.
Electric vehicles
These rechargeable batteries power electric cars, buses, and trucks. They are part of the battery packs that drive these vehicles, giving them the strength to go long distances. Their 36V output is ideal for electric motors, while the 4400 mAh capacity ensures the battery can be used over many charge cycles without losing too much power. Because of this, the batteries are perfect for heavy vehicles like e-bikes and e-scooters. These batteries allow for efficient energy use and lower operating costs.
Grid-level energy storage systems
Grid-scale energy storage systems utilize the 4400 mAh 36v 18650 li-ion battery to store large amounts of electricity generated by renewable sources like wind and solar power. The 36v output makes it suitable for integrating with electrical grids and maintaining energy balance. As these batteries are used repeatedly for multiple charge and discharge cycles, their 4400 mAh capacity allows them to effectively manage the wide fluctuations in power.
Renewable energy systems
These batteries are frequently paired with solar and wind power in off-grid energy systems. They keep excess energy for use when generation levels drop. With a 36V design, they easily work with the common voltage systems used in these alternative energy setups. The 4400 mAh capacity indicates a good ability to store fluctuating power states as the weather conditions change. This keeps the power supply steady and reliable for off-grid operations.
Power tools
These batteries are commonly used in cordless industrial power tools. Tools like drills, saws, and wrenches benefit from the strong energy output these batteries provide, enabling long periods of heavy use. At 36V, the power is strong enough to handle demanding tasks while remaining lightweight and easy to carry. The 4400 mAh capacity means the battery can run for many hours before needing a recharge, allowing work to be completed without frequent interruptions. This is especially helpful on construction sites or in workshops where efficiency is critical.
Battery type
A 36v 18650 li-ion battery is a rechargeable lithium-ion battery in the lithium-ion family. It is one of the most common battery designs due to efficiency and reliability.
Battery capacity
The 4400 mAh capacity indicates how much charge it can store. This large capacity is great for applications that need power for long periods, like electric bikes or power tools. It can deliver 4400 milliamps for one hour, or less milliamps for several hours, demonstrating versatility.
Battery voltage
The voltage level of 36 volts comes from connecting multiple 18650 cells in series. This voltage is useful for many applications, especially electric bikes, power tools, and portable devices. It provides a steady power output until the battery is nearly depleted.
Charging time
Charging typically takes around 6 to 8 hours with a smart charger, although fast charging options can reduce this time.
Cycle durability
This battery can be charged and discharged over 500 times while still maintaining a good level of charge. This makes it perfect for heavy daily use without wearing down too quickly.
The first thing when replacing a battery is to figure out what the problem is. Sometimes it just needs a little recharge or a fresh coat of charge. But if the battery is old and worn out, then it's time for a new one. And when getting a new battery, it's good to match the details of the old one.
Replacing a broken battery isn't too tough, but it's important to be careful when handling the parts. People need to have some tools ready to make the swap work out right. It's also smart to snap a few photos along the way so they know how everything fits back in later.
Many computers and other gadgets have a battery save mode that helps protect what is on there until the power runs out completely.
Maintenance is done every few months to help keep things running smoothly. Checking for wear and tear like cracks or loose wires keeps the battery pack in good shape. Giving the contacts a clean helps power go through better.
The second thing to do is ensure it's charged just right. No overcharging or letting it drain all the way down helps keep it healthy a lot longer. If not being used, it's good to check on it every so often so it doesn't die completely. This lengthens how long the battery lasts over time.
Operating the battery correctly also extends its life. Using the battery at moderate settings instead of maxing it out saves energy and reduces heat wear. When possible, removing the battery from a device that's plugged in helps it stay cooler and avoids overcharging. Following these smart tips makes the battery last its full natural length.
Check the brand
When it comes to batteries, using well-known names counts. Big names put their products through a lot of testing to avoid any problems. Just like how people go for trust in a car or a phone, the same goes for batteries.
Heat watch
The heat test shows if a battery is good or bad. If it heats up too much during a workout, then it's risky. Good batteries stay cool and don't get too hot. When a battery heats up, it makes people more cautious.
Battery age check
Old batteries carry more dangers. Over time, the parts inside wear out and become less safe. An aged battery is more likely to cause fires or even explode than one fresh from the factory. People feel safer picking a NEW battery rather than settling for one that's been around for a while.
Charge safely
Charging a battery needs extra care. It should never be left to charge all night when no one is around. It's best to top off a phone during the day and keep an eye on it, rather than letting a laptop charge under a blanket. Good chargers stop overloading, but it's wiser to move the charging device indoors at night just in case. Following the tips makes it less likely to have any explosions or fires from batteries.
Using a smart charger
Smart chargers matter. They cut the juice when a battery is full and help it not go past safe limits. They charge at a slower pace, which is better for battery health. Charging at a slow speed is kinder to a battery, helping it last longer. Batteries appreciate a gentle, slower charge, especially at the end when they're almost full. During that last stretch, a battery goes from fast absorbing to slow sips. It helps keep everything in working order and safe for a longer period.
A1. These batteries are popular for things like electric tools, power scooters, and even some portable medical machines. They're also used in systems that store energy from the sun or wind.
A2. With the right care, these batteries can be recharged about 500 times. After that, it might not hold a charge as well.
A3. While saving money on lower-priced versions can be tempting, doing so can have risks. Batteries are important since they power many things, and picking one that's tested for quality counts. When a battery is made carefully, with strong parts inside and no corners cut, it works safely and reliably. If a battery acts up or fails, it could even cause gadgets to get damaged. To keep things running smoothly for precious tools, bikes, or medical gear, it pays to choose a battery that's known and trusted.
A4. If a battery will sit around for a while, put it in a cool, dry spot away from too much heat or cold. It shouldn't get directly scorched by the sun or freeze from the cold. Also, don't let it sit completely empty. Give it a small charge, about a third full, so it doesn't shut down entirely. This helps keep it in good working order until it needs to be recharged again.
A5. Batteries don't last forever. It's time for a new one when it starts having problems. If the battery drains too quickly or takes a long time to charge, those are signs wear and tear is taking over. When it gets close to 500 times of being charged or used, it's been worked hard and deserves a rest. Getting a replacement keeps things working their best as batteries age.
