We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy

10 Best 18650 Batteries 2025 in the United States

How do we rank products for you?

Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

headphones-stars

Our Top Picks

#1

Winner

Skywolfeye 6 Pack 18650 Rechargeable Battery 3.7v 18650 Rechargeable Battery Lithium 3.7 Volt Button Top for Flashlights, Headlamp etc

Rating
10.0
Chosen by1,415
Capacity (mAh)
Safety Features
Brand and Quality

Most important from
97 reviews

Capacity (mAh)
The battery life falls significantly short of advertised capacity, delivering only about 10% of the expected performance.
Safety Features
Despite the brand's safety features, the longevity and actual capacity of these batteries can be disappointing.
Brand and Quality
The batteries arrive in good condition with no cosmetic defects, ensuring reliability from the start.

The Skywolfeye 6 Pack 18650 Rechargeable Batteries offer a reliable and versatile choice for devices like flashlights, headlamps, and other small electronics that need 3.7V power. These batteries come with important safety features including temperature control, short circuit, overcharge, and overcurrent protections, which help keep both the batteries and your devices safe during use. The button-top design makes them compatible with many devices that require this specific battery shape.

The brand claims up to 1000 recharge cycles, suggesting decent durability for regular use. Their moderate size and lightweight make them easy to carry for outdoor activities like camping. The brand Skywolfeye is less known compared to some premium battery makers, but customer reviews averaging 4 out of 5 stars indicate general satisfaction with performance and value.

These batteries suit everyday users looking for affordable, safe, and reusable power sources for common electronics rather than specialized high-drain applications.

Rating
10.0
Chosen by1,415
Capacity (mAh)
Safety Features
Brand and Quality

Most important from
97 reviews

Capacity (mAh)
The battery life falls significantly short of advertised capacity, delivering only about 10% of the expected performance.
Safety Features
Despite the brand's safety features, the longevity and actual capacity of these batteries can be disappointing.
Brand and Quality
The batteries arrive in good condition with no cosmetic defects, ensuring reliability from the start.
#2

AFSONGOO 2 Pack 3.7 Volt 18650 Rechargeable Battery 3400mAh 18650 Li-ion Battery for Flashlights, Headlamps, Doorbells, RC Cars (Flat Top)

Rating
8.8
Safety Features

Most important from
295 reviews

Safety Features
Ensure your replacement batteries are exact matches to avoid overheating and damage.

The AFSONGOO 2 Pack 3.7 Volt 18650 Rechargeable Battery offers a solid capacity of 3400mAh, making it suitable for a variety of devices like flashlights, headlamps, and RC cars. The wide compatibility ensures it can be used in many different electronic applications, which is a great advantage for versatility. The batteries come with advanced smart cell technology to provide efficient power management and longer usage, which is beneficial for users needing reliable performance over time.

Additionally, the safety certifications (CE, FCC, PSE, ROHS, and UL) and built-in protection features (against overcharging, overheating, and short circuits) ensure that these batteries are safe for use in various devices without risk of damage or failure. This attention to safety is a significant strength, especially for users concerned about battery reliability and device protection.

However, there are a few drawbacks to consider. These batteries are flat top cells, which means they might not be compatible with all devices. Users must verify that their devices can accommodate flat top batteries before purchasing. Additionally, while the batteries are of good quality and backed by essential certifications, the product is manufactured in China, which might be a concern for some users looking for domestically produced options.

Rating
8.8
Safety Features

Most important from
295 reviews

Safety Features
Ensure your replacement batteries are exact matches to avoid overheating and damage.
#3

BWIETE Flat Top IMREN 3500mAh 30A 18650 Batteries 3.7V Lithium Ion for Camera,Toys(2PCS)

Rating
8.8
Capacity (mAh)

Most important from
182 reviews

Capacity (mAh)
Perfect for my Smok Mod, long-lasting charge and well priced.

The BWIETE Flat Top IMREN 3500mAh 30A Batteries offer a solid choice for those needing reliable power for various devices like cameras and toys. With a voltage of 3.7V and a capacity of 3500mAh, these lithium-ion batteries deliver a good balance of longevity and performance. The 30A discharge rate is also impressive, making them suitable for devices that require a decent amount of power without compromising safety. This feature is crucial, especially for users who might be using these batteries in high-drain devices.

One of the standout aspects is their versatility; users can easily employ them in a range of applications, from LED torches to toys, making them a practical addition for households with various battery-operated devices. The 12-month shelf life is another strong point, ensuring that these batteries remain usable for a considerable time if not in active use. The company also offers excellent after-sales support, which can provide peace of mind for first-time users.

However, there are some drawbacks to keep in mind. It’s important to note that while they are marketed for cameras and toys, they may not be suitable for more advanced applications that require higher discharge and capacity specifications.

Rating
8.8
Capacity (mAh)

Most important from
182 reviews

Capacity (mAh)
Perfect for my Smok Mod, long-lasting charge and well priced.

Buying Guide for the Best 18650 Batteries

When choosing 18650 batteries, it's important to understand the key specifications that will determine their performance and suitability for your needs. These batteries are commonly used in flashlights, laptops, and other electronic devices due to their high energy density and rechargeability. To make an informed decision, you should consider several factors such as capacity, discharge rate, voltage, and safety features. Understanding these specifications will help you select the best battery for your specific application.
Capacity (mAh)Capacity, measured in milliampere-hours (mAh), indicates how much charge a battery can hold. This is important because it determines how long the battery will last on a single charge. Higher capacity batteries (3000mAh and above) will last longer but may be larger and heavier. Lower capacity batteries (under 2000mAh) are lighter and may be suitable for devices that don't require long battery life. Choose a capacity based on how long you need the battery to last between charges.
Discharge Rate (C-rating)The discharge rate, or C-rating, indicates how quickly a battery can release its stored energy. This is crucial for high-drain devices like power tools or high-performance flashlights. A higher C-rating means the battery can deliver more power quickly. For low-drain devices, a lower C-rating is sufficient. Consider the power requirements of your device to determine the appropriate discharge rate.
Voltage (V)Voltage, measured in volts (V), is the electrical potential of the battery. Most 18650 batteries have a nominal voltage of 3.7V, but this can vary slightly. It's important to match the voltage of the battery to the requirements of your device to ensure compatibility and optimal performance. Check your device's specifications to determine the correct voltage.
Safety FeaturesSafety features such as overcharge protection, over-discharge protection, and short-circuit protection are important to prevent damage to the battery and your device. These features help ensure safe operation and longevity of the battery. Look for batteries with built-in protection circuits, especially if you are using them in high-drain or sensitive devices.
Brand and QualityThe brand and quality of the battery can significantly impact its performance and reliability. Reputable brands are more likely to provide accurate specifications and higher quality control. Avoid generic or no-name brands, as they may not meet the stated specifications and could pose safety risks. Research and choose batteries from well-known and trusted manufacturers.

FAQ

Most Popular Categories Right Now