The best 18650 batteries for your money is subjective. Some of the longest lasting 18650 batteries last twice as long but cost three times as much. The top manufactures of 18650 batteries are LG, Samsung, Sony and Panasonic brands, but the batteries are made in several countries including Korea, United States, Hungary, Poland and China.
For your safety, it is best to use protected batteries to prevent possible over-charge or damage to your device. Some devices have built in protection and may not need protected batteries and may not accept protected batteries.
I think Amazon sells more 18650 batteries for personal electronic devices than any other company, so here are some good 18650 batteries from AMAZON. We are Amazon affiliate and may receive a small commission on these sales.
EBL 3.7V Rechargeable Batteries 3000mAh with USB Charging Port USB Battery for Flashlights – 2 Pack
EBL Newest Generation USB Rechargeable Battery – $22 at AMAZON
— High performance: EBL 3.7V Li-ion batteries with 3000mAh ultra high capacity
— USB Rechargeable Battery: 3.7V lithium batteries(BATTERY SIZE:2.6inch x 0.71inch), perfectly used for tactical flashlight,toys, headlamps, battery operated fan and other household devices.
— USB-C Fast Charge: Built-in USB-C port, easy to charge with the included Type C cable
— Recharge up to 1200 Cycles
COSHIP 3.7 Volt 18650 Rechargeable Battery Button Top 2-Pack
18650 Li ion Battery 3200mAh for Flashlights $22 at AMAZON
— 18650 Rechargeable Battery: Button Top Battery size:67*18*18mm (2.64*0.71*0.71inch). NOTE: Please confirm the battery size and battery type before purchase.
— High Performance: With a 3200mAh capacity, no memory effect, and multiple protective features, these 18650 batteries offer high performance. They support a stable 3.7-volt output voltage, which makes devices more efficient and extends their lifespan. These batteries are perfect replacements for frequently used devices.
— Safety Assurance: Our rechargeable 18650 batteries are equipped with an integrated safety circuit that protects against overcharging, over-discharging, short-circuiting, and overheating. You can rest assured that these batteries are completely safe to use during charging.
EBL Smart Rapid Battery Charger at AMAZON $14
- Intellicharger with iQuick technology, upgraded charging speed up to 500mA, effectively charging batteries, save your time.
- Compatible for 3.7V Li-ion Lithium-ion IMR INR ICR 26650 25500 22650 18650 18490 18500 18350 16340 RCR123A 14500 10440 Rechargeable CR123 CR123A Li ion Batteries and Ni-MH/Ni-Cd AA AAA rechargeable batteries
- Portable and travel allowed due to the charger support any DC allowed occasion like using in car etc.
- MCU controlled technology with advanced “overtime” safety function which could automatically stop to charge while the battery is fully charged.
- Globally charger with smart LED to show its charging progress, when 3 LED lighting together means the battery is fully charged.
4-Pack 18650 Battery + Charger (Flat Top)
Flashlights, Headlights, Fans, Toys, Radios, Speakers (4 Pack Batteries)
Economy 18650 4-Pack + Charger. $22 at AMAZON
— Durable rechargeabl: 3400mAh 18650 Rechargeable battery large capacity,Which can be widely used for electronic devices, such as LED flashlights, emergency lights, portable devices, headlights, toys, remote controls, etc.Recharge up to 1050 cycles – longer battery life than alkaline batteries, No need to buy batteries frequently.
— Safe One-Bay Battery Charger: The USB cable can be charged, can be connected to cell phone chargers, computers, rechargeable batteries, etc. for charging, simple and convenient. two-color LED indicator, red light is on when charging, green light is on when full, intelligent full self-stop. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery.
Button Top 3.7V 18650 Lithium ion Battery 18650 Rechargeable Battery 3200mAh (Button Top Battery, 8 Pack)
8 Pack 18650 Button Top Batteries $29 at AMAZON
These economical 18650 batteries are perfect for toys, flashlights and other devices. These may not last quite as long, but because they are competitively priced, they are worth the money.
These are protected against short circuit, over charging and discharge protection so you get the most value for your $$$$$.
Nitecore UMS4 Intelligent Battery Charger
Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger AMAZON $38
Charges Li-Ion/Ni-MH/Ni-Cd/IMR 16340 14500 18650 21700 20700 AA AAA and More Batteries, with LumenTac digital display
FAST AND EFFICIENT CHARGING- Reach a maximum total of 2000mA when using a 2A output USB power adapter. Connect a quick charge (QC) power adapter for high speed charging and reach a single slot max output of 3000mA.
LCD DISPLAY- Reports key realtime information such as battery health, charging status and charging mode.
INTELLIGENT CHARGING- Automatically selects appropriate charging current and voltage.
BATTERY TYPES & SIZES – Compatible with various battery types (li-ion/imr/lifep04/ni-cd/ni-mh) and common battery sizes including (18650, 21700, 16340,14500 and more).
PERFECT FOR TRAVEL AND EDC – This bundle includes a LumenTac battery organizer to keep you organized when you are on the go.
“Flattop” vs. “Button top” 18650 Batteries
The terms “flattop” and “button top” refer to the two different types of terminals found on 18650 batteries, which are commonly used in various devices such as flashlights, vape mods, and portable power banks. These terminals determine how the battery makes contact with the device’s circuitry. Here’s a breakdown of each type:
Sony of Japan also makes excellent 18650 batteries but they usually cost more than Korean brands.
Most of the 18650 batteries made in China with 3500-9900 mAH ratings cost less but last only 1/3 to 1/2 as long as the better brands. Most 18650 batteries from China are labeled with higher mAH capacity but last no longer than 2500 mAH rating.
There are several reputable manufacturers known for producing high-quality 18650 batteries. Here are some well-regarded brands in the industry. These companies’ batteries are made in several companies including China.
1 Panasonic: Panasonic is often considered one of the top manufacturers of 18650 batteries. Their NCR18650 series is highly regarded for its performance and reliability.
2 Samsung: Samsung is another well-known brand that produces excellent 18650 batteries. Their INR18650 series is popular among enthusiasts and professionals alike.
3 LG Chem: LG Chem is a prominent manufacturer of lithium-ion batteries, including 18650 cells. Their HG2 and HE4 models have gained popularity for their capacity and performance.
4 Sony: Sony has a strong presence in the battery industry, and their 18650 batteries have a solid reputation. The Sony VTC5A and VTC6 models, in particular, are highly regarded for their performance.
5 Sanyo/Panasonic Eneloop: Sanyo (now a subsidiary of Panasonic) is known for its Eneloop line of rechargeable batteries. While not specifically marketed as 18650 batteries, their Eneloop Pro series offers high capacity and reliability.
6. Fenix: Fenix is the only Chinese Brand that matches the capacity it is rated. Fenix batteries are among the best we have found.
It’s worth noting that the performance and quality of batteries can vary even within a brand, as manufacturers may produce different models with varying specifications. Therefore, it’s always recommended to check the specific model and its reviews before making a purchase.
Best 18650 Battery Chargers
Chargers with overcharge protection incorporate a range of features designed to enhance safety and convenience. Most notably, these chargers employ advanced microprocessors and sophisticated charging algorithms that continuously monitor the battery’s voltage and adjust the charging current accordingly. Once the battery reaches its full charge, the charger automatically terminates the charging process to prevent overcharging.
Importance of Overcharge Protection
Overcharging occurs when a battery continues to receive a charging current after it reaches its maximum capacity. This can result in thermal runaway, electrolyte breakdown, and even fire or explosion. To mitigate these risks, 18650 battery chargers are equipped with overcharge protection mechanisms. These mechanisms constantly monitor the battery’s voltage and terminate the charging process when it reaches its optimum level. Overcharge protection not only ensures the longevity of the battery but also promotes user safety and prevents accidents.
A Great PROJECT FARM video review about 18650 batteries
Protected and Unprotected 18650 Batteries
Protected and unprotected 18650 batteries refer to two different types of lithium-ion batteries, each offering specific advantages and considerations based on their intended use and safety features. It is best to always use protected 18650 batteries if they will fit your electronic device.
Protected 18650 Batteries:
- Protected 18650 batteries have built-in protection circuits that help prevent overcharging, over-discharging, and short-circuits.
- These batteries are ideal for devices that lack their own safety mechanisms, like some older flashlight models, electronic devices, and DIY projects.
- Protected batteries offer an extra layer of safety by cutting off the battery’s output when certain conditions are met, helping to prevent dangerous situations.
- However, the protection circuit adds a slightly larger size to the battery, so they may not fit in all devices designed for 18650 batteries.
Unprotected 18650 Batteries:
- Unprotected 18650 batteries do not have built-in protection circuits.
- These batteries are generally used in devices that have their own built-in safety mechanisms, such as many high-quality flashlights and some regulated vape mods.
- Since they lack built-in protection, these batteries are more susceptible to overcharging, over-discharging, short-circuits, and other potentially unsafe situations if not used and handled properly.
- Users must ensure they are familiar with the safe handling practices of these batteries and use them only in devices that have their own safety features.
When deciding between protected and unprotected 18650 batteries, consider the following factors:
- Device Compatibility: Ensure that the battery type you choose is compatible with the device’s specifications and safety requirements. Some devices may specify the type of battery they are designed to work with.
- Safety: If you’re not using a device with its own built-in safety features, using protected batteries can provide an added layer of protection against potential hazards.
- Size and Fit: Protected batteries may be slightly larger due to the added protection circuitry, which could affect whether they fit properly in your device’s battery compartment.
- Usage and Knowledge: If you opt for unprotected batteries, make sure you’re well-versed in proper lithium-ion battery safety practices to avoid mishaps.
Ultimately, the choice between protected and unprotected 18650 batteries depends on the specific device you’re using and your comfort level with battery safety practices. Always prioritize safety and follow manufacturer guidelines for battery use and maintenance.
“Flattop” vs. “Button top” 18650 Batteries
The terms “flattop” and “button top” refer to the two different types of terminals found on 18650 batteries, which are commonly used in various devices such as flashlights, vape mods, and portable power banks. These terminals determine how the battery makes contact with the device’s circuitry. Here’s a breakdown of each type:
Flattop 18650 Batteries:
- Flattop batteries have a flat, smooth positive terminal (the end of the battery with the larger, raised terminal).
- They lack the protruding button-like terminal found on button top batteries.
- Flattop batteries are commonly used in devices that have spring-loaded battery compartments or where the circuit contacts are designed to make direct contact with the flat surface of the battery terminal.
Button Top 18650 Batteries:
- Button top batteries have a raised positive terminal (the end of the battery with the larger terminal) that resembles a small button or nub.
- The button top design is intended to ensure proper contact with devices that have fixed or rigid battery compartments, as the raised terminal makes it easier for the circuit contacts to engage.
- Button top batteries are typically used in devices that require a secure connection or in devices that were originally designed for batteries with button top terminals.
When choosing between flattop and button top 18650 batteries, it’s important to consider the specific requirements of the device you intend to use them in. Some devices may only work with one type of terminal due to their design, while others may be compatible with either type. Always consult the manufacturer’s guidelines or recommendations for your specific device to ensure you choose the correct type of battery terminal.
Best 18650 Batteries in Thermal Scopes
Introduction: In recent years, thermal scopes have revolutionized the field of optics by providing enhanced vision in low-light and challenging environments. These devices utilize advanced technology to detect and display heat signatures, enabling users to perceive their surroundings with unprecedented clarity.
A key component that powers these remarkable thermal scopes is the 18650 battery, which has gained significant popularity due to its remarkable performance and versatility. In this post, we will explore the reasons behind the widespread use of 18650 batteries in thermal scopes and examine their numerous advantages.
Advantages of 18650 Batteries:
- High Energy Density: 18650 batteries are known for their exceptional energy storage capabilities. They are equipped with a higher energy density compared to other common battery types, enabling them to provide extended operating times for thermal scopes. This high energy density ensures that users can rely on their devices for prolonged periods, especially during critical operations or extended surveillance missions.
- Rechargeable and Cost-Effective: The 18650 batteries are rechargeable, which makes them an economical choice for users of thermal scopes. With the ability to be recharged hundreds of times, these batteries offer a cost-effective solution, reducing the need for frequent battery replacements. Additionally, the reusability of 18650 batteries helps reduce electronic waste, making them an environmentally friendly option.
- Versatility: Another significant advantage of 18650 batteries is their compatibility with a wide range of devices. These batteries are widely used in various electronic devices, including laptops, flashlights, and power banks. The compatibility factor ensures that users can easily find replacements or backup batteries for their thermal scopes, even in remote locations or emergency situations.
- High Discharge Rate: Thermal scopes often require a sudden surge of power to deliver optimal performance. 18650 batteries are designed with a high discharge rate, making them capable of providing the necessary power output for demanding applications. This feature ensures that thermal scopes can operate efficiently, delivering real-time thermal imaging with minimal lag or delay.
- Reliability and Durability: The 18650 batteries are built to withstand rigorous use in challenging conditions. They are typically constructed with robust materials that offer resistance against shocks, vibrations, and extreme temperatures. This durability is crucial for thermal scopes, which are often used in harsh outdoor environments or tactical situations. The reliability of 18650 batteries ensures that users can depend on their thermal scopes, even in demanding scenarios.
Conclusion: The extensive use of 18650 batteries in thermal scopes can be attributed to their outstanding performance, rechargeability, compatibility, and reliability. These batteries offer high energy density, cost-effectiveness, and a high discharge rate, making them an ideal power source for thermal scopes.
Additionally, their durability allows users to rely on their thermal scopes in adverse conditions without concerns about battery life. As technology continues to advance, it is likely that the popularity of 18650 batteries in thermal scopes will continue to grow, further cementing their position as a trusted and preferred power solution in the field of thermal imaging.
