18650

■ Purpose of purchase ✔ The battery that goes into the RC drone I have is an 18650 battery~ If you want to play with it for a long time, a strong battery is essential! The rechargeable battery that I have been using is almost at the end of its lifespan, so I bought a rechargeable battery with good cost-effectiveness and looked into it. ■ Quick purchase decision! ✔ Recommended - If you are looking for an 18650 battery with high capacity (over 3000mAh), long life, and protection circuit~ ✔ Not recommended - If you only use general AA, AAA batteries or coin batteries.. ■ Real reviews ✔ Battery specifications - Type: Lithium-ion (Li-ion) - Actual size: Diameter about 18.4mm Length about 70mm - Capacity/Energy density: 3000mAh / 11.1Wh - Rated voltage: 3.7V - Maximum charge voltage: 4.2V - Discharge cut-off voltage: 2.5~3.0V - Charging method: CC/CV (constant current/constant voltage) - Operating temperature: 0~45 degrees when charging, -20~60 degrees when discharging - Charging cycle life: Approximately 800~1000 times - Built-in protection circuit: Overcharge, over-discharge, short-circuit, and overheating prevention Protection circuit included ✔ Advantages of 18650 batteries - With a large capacity of 3000mAh, it supplies power for a long time and stably~ - The protection circuit is built-in as standard, so it can be used more safely. - It is used for high-performance flashlights & lanterns, electronic cigarettes, laptop power packs, RC drones and cars, portable audio devices, etc.~ ✔ Actual size - The original 18650 standard was 18mm wide and 65mm tall... After that, the protection circuit was essential, so the length changed to about 70mm, and the width is slightly different depending on the manufacturer. ✔ Manufacturer - It was made by Shenzhen Longyuan Sheng Power in China. It is a company established in 2017 and is a famous lithium-ion battery manufacturer. Since it is a well-known company, I trust it and use it. ✔ Actual user review - As expected, the battery has a high capacity of 3000mAh, so it is good that it can be used for a long time. It is good because it has a capacity that is about twice that of a regular AA battery! It's good that it has a built-in protection circuit so you can use it without worrying about overheating or overcharging. - It's a product that has received domestic KC electrical safety certification. I searched for the certification information and uploaded it, so please refer to it! - When fully charged with a dedicated battery, the output voltage can reach about 4.2V. I measured it as soon as I received it and it was about 3.92V. I think it's okay to use it right away. - It came in a thin Coupang plastic bag without a separate box or cushion... There's nothing wrong with the product, so it's fine, but it's a high-capacity battery, so it's a shame that it could be dangerous if it gets hit hard during delivery or gets crushed under another product... ✔ Tips on how to calculate 11.1Wh - You can find out the total energy of the battery by multiplying the capacity (mAH) x rated voltage (V) / 1000. (3000 x 3.7) / 1000 = 11.1Wh, which means that it is theoretically possible to supply 11.1W of power for 1 hour. You can see that it has quite a large capacity. ✔ 18650 batteries can be used in places like this. - It is widely used in places that require high-capacity batteries, such as high-performance flashlights and lanterns, electronic cigarettes, laptop battery packs, RC drones and vehicles, industrial measuring instruments, and portable audio devices. ■ Overall Review Those who generally use only AA and AAA batteries may not know much about 18650 batteries. 18650 batteries are widely used in various devices that require high output and long-term operation due to their high capacity and stable power supply ability. Since you can charge and use them many times using a dedicated charger, I recommend it as a cost-effective product! ⭐ I wrote an honest review with my own money! If this was of any help to you in purchasing a product, please click [Helpful] ~ ^^ I hope you always make wise purchases!

18650 3000mAh rechargeable battery, 1 pack, 2 units purchased. 18650 3000mAh rechargeable battery is a lithium-ion battery widely used in various electronic devices, especially used in portable electronic devices and DIY projects. What I felt while using this battery is that it provides sufficient durability for everyday use because the capacity is 3000mAh. In general, 18650 batteries are excellent in portability due to their moderate size and weight, and the charging time is relatively short. In actual use, the performance did not drop significantly and stable output was maintained for a short usage cycle of about a week. In particular, it was confirmed that heat dissipation was low and stable output was continuously provided even in devices requiring high current. However, as the number of charges increased, the capacity gradually decreased. At first, the capacity of 3000mAh could be used almost completely, but after dozens of charges, a slight decrease in performance was felt. However, this can be accepted as a natural phenomenon due to the characteristics of lithium-ion batteries. In addition, since the lifespan tends to decrease when the battery is excessively discharged, I felt that it is important to manage the charging cycle well. In conclusion, the 18650 3000mAh rechargeable battery provides sufficient performance and reliability for general purposes, but you should consider that the lifespan may vary depending on your usage habits. If you manage the charging cycle well and avoid excessive discharge, I think it is a battery that can maintain stable performance for a long time. Overall, it is a satisfactory product, but we will have to wait a little longer to see whether it will continue to perform well even after long-term use. And it is said that rechargeable batteries are mainly used for the following purposes: Portable electronic devices: They are often used in portable devices such as flashlights, wireless earphones, and electronic cigarettes. These devices require long usage times without requiring high power consumption, so 18650 batteries are suitable. Power tools: They are used in power tools such as drills, electric screwdrivers, and chainsaws. These devices require high output for a short period of time, so 18650 batteries are used, which provide stable output. DIY projects: 18650 batteries are widely used in various DIY projects such as drones, RC cars, and electric bicycles. They are useful because you can combine battery packs to match the desired capacity and output. Auxiliary batteries: Multiple 18650 batteries are also often used as large-capacity auxiliary batteries. This allows you to secure the capacity to charge electronic devices such as mobile phones or tablets multiple times. Solar power generation systems: Some small solar power generation systems use 18650 batteries to store the electricity they produce. The battery life and charging efficiency are high, making them suitable for small energy storage solutions. In addition, 18650 batteries are said to be used in electric bicycles, electric scooters, and laptop battery packs.

I bought an LED flashlight for emergency use, but the battery life of the flashlight is important, and when purchasing an IED flashlight, the battery capacity is small, so I was looking for a battery rechargeable battery that can be used for a long time to upgrade the capacity, and I ended up buying this 18650 battery rechargeable battery 300mAh. This product, the 18650 lithium-ion battery, has a built-in protection circuit, so it is a battery that has obtained KC electrical safety certification for excellent safety that prevents overcharge/overvoltage/overheating, so I was able to trust its safety, so I bought it with confidence. The 18650 lithium-ion battery boasts durability that can be charged more than 1,000 times on average, so it can be used for a long time, and it is efficient with a density 5-7 times higher than that of a regular AA 1,000, and it is said to be very helpful in saving costs and protecting the environment. It is cheap compared to the capacity of the battery rechargeable battery, and the flashlight usage time is more than doubled, so I can use it without worrying about discharge, which is good. It is also fast to charge, and the battery performance is consistently maintained even after charging, so I can use it for a long time without worrying about discharge. This is a very satisfying battery that I can use. Since it is a battery with a built-in protection circuit, it can be used safely by blocking overcurrent, overvoltage, and overheating. It is inexpensive and has a long-term capacity, so it seems convenient to use for night hiking, night riding, and car maintenance. It charges well and has a large charging capacity, so the battery lasts a long time after one charge. It has a built-in protection circuit that blocks overheating, so it is a reliable battery that I can use with confidence. If my review was helpful, please click the helpful button below~~~~

**(My own money, honest review) Reason for purchase:** Since I often enjoy sunbathing, the battery life of the headlamp is important, so I bought a 3000mAh 18650 rechargeable battery. My existing battery was frequently discharged, which was inconvenient, so I looked for a battery with a long lifespan and chose this product. **Advantages:** 1. **You can use the headlamp for a long time when sunbathing.** This battery has a capacity of 3000mAh, so it is enough to use the headlamp for a long time. I am very satisfied because the battery does not suddenly discharge when sunbathing. Since the lifespan is long, I can use it for a long time without worrying about the battery. 2. **It is convenient and fast to charge.** The charging time is appropriate, and the performance is maintained steadily even after charging. You can use it stably without performance degradation even after charging multiple times. The charging speed is fast, so it is a great help when you need it urgently. 3. **It is a set of 6, so you can use it leisurely.** Since 6 come together at once, it is convenient to replace the batteries whenever you need them. It's great for use on multiple devices or as a spare battery. You can rest assured that it's always ready when you need it. **Cons:** Honestly, there are no cons so far. I haven't experienced any particular inconveniences or problems while using it so far. **Would I repurchase:** Overall, I'm very satisfied with this product, so I would definitely repurchase it. It's very useful because it can be used for various purposes other than just hair removal. The battery performance is excellent, and it's a reliable product, so I plan to continue using it in the future.

✅️Reason for purchase I recently bought a flashlight from a shopping mall called Ali, but it turned out that the product did not include batteriesㅜㅜ. I had to use it in a hurry, so I was worried about where to get the batteries, but as expected, Coupang has everything. Products that have separate shipping costs from ㄴㅇㅂ are sold by Coupang with rocket delivery, so I really use Coupang for this taste. Coupang is the best ✅️Purchase review As expected, Coupang's quick delivery! I received the item in less than a day. I put it in the flashlight as soon as I received it, and it works very well. I'm so, so satisfied!!! In addition, it has the KC certification mark, so I was able to purchase it with confidence. And since this battery can be charged and used about 1,000 times, it is definitely an eco-friendly battery. ✅️What is a 18650 battery?? Some people may not know much about 18650 batteries, so let me explain it simply. As you may have noticed, 18650 is a name given to the appearance of the battery!. Diameter 18mm, length 65mm, 0 means cylindrical shape It is a battery used in many rechargeable electrical appliances except for cell phones that use lithium-ion secondary batteries. It is also a battery used in portable handheld fans that we are familiar with. ✅️Places where 18650 is often used Auxiliary batteries, portable handheld fans, flashlights, camping lamps There are many places selling 18650 batteries these days, but there are many products that do not have KC certification.. Be sure to check this part before purchasing!

18650 rechargeable batteries are a type of lithium-ion battery, generally used in portable electronic devices and power tools. Let's learn about the characteristics and usage of this battery. 1. High capacity and easy charging : 18650 batteries have a high capacity, so they can be used for a long time with a single charge. Also, many people use them because they are easy and fast to charge. 2. Economical and environmentally friendly : 18650 batteries are economical and environmentally friendly. Since they can be recharged rather than using disposable batteries, you can save on living expenses. Also, since they do not use disposable batteries, the burden on the natural environment is reduced. 3. Proper storage is required : 18650 batteries require proper storage because they have risks such as overheating, shock, and overcharging. When storing batteries, it is recommended to avoid high temperatures, high humidity, and direct sunlight, and to store them in a charged state. 4. How to use : 18650 batteries are used in various electronic devices. Since it plays a role in supplying power, you should check the specifications of the electronic product you want and select a battery with an appropriate capacity. Also, when charging using a charger, it is recommended to check the manufacturer's recommended specifications. Therefore, 18650 rechargeable batteries have a high capacity, are economical, and are environmentally friendly. If you pay attention to proper storage and usage, it is a safe battery that can be used for a long time.

I bought it because it was the lowest price. I bought it to replace my old mountaineering flashlight battery. I've used various types of 18650 for mountaineering and fishing, and there was not much difference between premium Korean and Japanese products and Chinese products. Even in the early 2000s, there was a big difference in quality and weight, but these days, the difference is almost gone. The price is also very different, but the quality seems similar. First of all, the size is a bit thin and the positive tip is a bit small, but there is no problem with the contact point. It is a bit thin, so there is no sound when you shake the paper. It has a large capacity and shoots a lot of light. I am very satisfied with it and using it for flashlight. It is the lowest price on Coupang, but it is useful. After purchasing it, I tried the Taiwanese Xtier and it came out at 3.7. After charging it for about 3 hours, it came out at 4.2, indicating a full charge. There is no indication of the year of manufacture, but if you calculate the amount of natural discharge, it seems like it was manufactured at least 2 years ago. It is well-made without any leaks or scratches. I think it is the best value for money. I highly recommend it.

I ordered it to use in a headlamp when I go out. ~ It's my first time buying such a large battery, but it's amazing when I actually receive it. ㅎㅎ Since there are 3 lanterns, each lantern needs 3 batteries, so I ordered a total of 9 batteries. It's much cheaper to buy more than buying them individually, right?^^ I was going to order it from a place that sells headlamps, but Coupang was much cheaper, so I ordered it there. I think I ordered it well. The lantern doesn't use regular batteries, but only rechargeable 18650 batteries. I looked it up and found that Coupang sells them. ㅎㅎ The size is about 18mm in diameter and 65mm in length, which is larger than regular batteries, and the pink color is really pretty. ~ I didn't buy the charger separately. I think I can put it in the headlamp and charge it. ㅎㅎ I bought it for the headlamp, but it has many other uses. I knew it would fit when I ordered it to use in the lantern, but I was worried that the sizes might be different, but I was worried for nothing. The lantern size is perfect and the light is very bright, so I am very satisfied. I haven't tested how long it will last, but I think it will be good. Since it is rechargeable, I think I can use it for a long time. To use it for a long time, I should avoid hot and humid places and store it safely. I will come back to buy it again if I need it.

★★★★★ Real-use review - KC certified 18650 lithium-ion rechargeable battery 3000mAh I bought 2 18650 lithium-ion rechargeable batteries to use in LED lighting. When I used it in my daily life, the pros and cons were clear, and among them, the fact that it was a KC certified product felt particularly trustworthy. I will summarize it in detail below. ⸻ ✅ Advantages 1. Stability verified by KC certification This product is an official product that has received domestic KC certification, so it is highly reliable in terms of electrical safety. Stability is important due to the nature of lithium-ion batteries, and it worked stably without overheating or voltage instability, so I could use it with confidence. 2. Generous capacity and long usage time As expected from the 3000mAh specification, the usage time after charging is quite long. When used in LED lighting, it lasts for several days even if used for several hours a day, so it is convenient without having to charge frequently. 3. Excellent charger compatibility It worked well with the 18650 charger (spring type) I have, and there was almost no heat generation during charging. The time it took to fully charge was also appropriate for the specifications. 4. Good cost-effective single product composition You can purchase small quantities in units of 1, so it is perfect for testing or small devices, and the performance is quite good for the price. I think it would be especially suitable for those who want to test a small quantity before purchasing in bulk. 5. Packaging and delivery status I was able to receive it quickly through Coupang Rocket Delivery, and the individual packaging was neat, so I received it without damage during delivery. ⸻ ❌ Cons (Minor regrets) 1. The brand name is somewhat simple The brand name and country of manufacture information are only briefly indicated on the product exterior, so it may feel unfamiliar to those who see it for the first time. However, the KC certification mark was visible, and my confidence increased after use. 2. Check for interference by device There may be slight interference with some devices (especially products with tight battery compartments), so we recommend checking if it fits the size of the device you are using and using it. ⸻ Overall Thanks to KC certification, this product is guaranteed to be stable and reliable, and when I actually used it, I was very satisfied with the fact that it had almost no heat and a long usage time. It is especially suitable for use in devices that require a constant current, such as LED lights or portable small devices. I would like to repurchase this product because it has cost-effectiveness, safety, and actual user satisfaction. I also recommend it to those who are using lithium-ion batteries for the first time.

This rechargeable battery is very satisfactory in terms of product quality and performance. Even among 18650 lithium-ion batteries, it maintains stable output, and the actual capacity is close to the stated 3000mAh, making it reliable. I use it as a lantern at work, and it's convenient because it lasts a long time on a single charge. Packaging and delivery were quick. Since it's a set of two, I think it's a good value. I confidently recommend it to anyone looking for a similar product.