Best 3.7V Battery Review — 18650 LI-Ion Battery & 3.7 Volt Lithium Rechargeable Batteries

Batteries come in different sizes and shapes and they are indispensable in our modern lives. They can power our flashlights, radios, remotes, music players, and more. To help you choose the right batteries, we have already compiled reviews on many types (links to some are below the comparison chart). This one is about 3.7V batteries. We want to assure you that our top picks are from some of the best 3.7V battery brands!
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Good For
Our Top Choice
ORBTRONIC Protected 3.7V Rechargeable Li-ion Batteries
Orbtronic is a professional company specializing in batteries, chargers, flashlights, and laser pointers for people who need reliable power or illumination options.
Come with protective case. Made in Japan. 5-year storage life. Excellent for powerful flashlights. Compact design.
Some batteries arrived damaged, but they were replaced by Orbtronic. Such instances are rare.
Yes, Seiko Protection
2 batteries
2.7 x 0.7 x 0.7 inches
Flashlights, remotes, not e-cigs
Best Value
Samsung 2500mAh 3.7v Rechargeable Batteries
Samsung is a world-renowned manufacturer of electronics and gadgets. It’s best known for making high-end smartphones and tablets, but it also makes excellent batteries.
Top manufacturer. Recharges in approximately 3 hours. Useful for various electrical goods such as remotes, cameras, etc.
Isolated complaints that they don’t last long.
4 batteries
3.9 x 2.7 x 0.72 inches
Remotes, flashlights, toys
Canon 3.7v Lithium-Ion Battery Pack
Canon is one of the biggest manufacturers of digital cameras and accessories for them. It’s also well-known on the printer market and its products are appreciated worldwide.
Compact and lightweight design. Lithium-ion technology. Highly reliable. Package contains Canon hologram.
Very few batteries arrived damaged to customers, but they were replaced.
1 battery
1.5 x 1.4 x 0.2 inches
Canon Power Shot cameras
Nitecore 3.7V Protected Li-ion Rechargeable Batteries
Nitecore specializes in rechargeable batteries, flashlights, diffusers, tactical pens, and battery chargers. Its products are highly appreciated and come at reasonable prices.
500 charging cycles. PCB protection circuit prevents under-voltage and over-voltage. Compact and eye-catching design.
Some customers received just one battery, but this rarely happens and the manufacturer usually sends the other one quickly.
2 batteries
5.9 x 5.3 x 1.5 inches
Flashlights, remotes, toys
EBL 3.7V Li-ion Rechargeable Batteries
EBL specializes in power solutions such as rechargeable batteries and lithium batteries. It also makes chargers for its batteries and even compact flashlights for many situations.
Bestseller. Come with charger. Up to 1000 cycles. Durable and safe. Low self-discharge.
Isolated complaints that they don’t fit in high-drain e-cigs.
4 batteries
3.5 x 1.3 x 1.3 inches
Flashlights, 2-way radios

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What is the Best 3.7 Volt Battery?

There are several things to keep in mind when buying batteries such as their type, capacity, how many you get in the package, and even if they also come with a battery charger. We provided you with five excellent batteries in a mixture of prices and types, so you should be covered.

Don't what you need? Take a look at Amazon's current best selling 3.7V battery list.

Our Top Choice
The Orbtronic Protected Rechargeable Button Top High Performance Li-ion Batteries are specially designed for powerful flashlights and they have a 5-year storage life, making them highly reliable and useful in any situation. If you don’t have a charger yet, take a look at the Battery Charger Kit from EBL which includes 2 protected 3500mAh batteries and a powerful charger which is capable of fast charging!

ORBTRONIC Protected Rechargeable Button Top High Performance Li-ion Batteries – Good for High-Power Flashlights

Orbtronic is all about powerful and reliable batteries! This brand is increasingly popular and appreciated these days thanks to its high-capacity batteries which can go up to around 4300mAh. Orbtronic has also developed its own line of flashlights and laser pointers which go perfectly with its batteries, so if you usually spend time outdoors in the dark, don’t hesitate to check out this brand's illumination devices.

In the meantime, let's take a look at the 3500mAh Protected Rechargeable Batteries from Orbtronic. You get 2 of these batteries in a package and the manufacturer has also included a protective case. The batteries themselves are made in Japan and they have a 10-amp core cell which makes them suitable for powerful flashlights and other devices. Unfortunately, these batteries are not compatible with electronic cigarettes, but they perform great for numerous other gadgets you might have in your house.

We highly appreciated the quality of these batteries as they come with a 5-year storage life, so they will be reliable even if you use your flashlights occasionally. It is important to point out that products made in Japan use some of the best materials and they have excellent quality control systems, so your batteries won't let you down when you need them the most!
Best Value
The Samsung 2500mAh 3.7v Rechargeable Batteries come in a pack of 4 and they can be used for various types of electrical goods such as cameras, remotes, and so on. If you prefer a lithium-ion battery then go for the Samsung SLB-10A 1050mAh Lithium Ion Rechargeable Battery.

Samsung INR18650-25R 18650 2500mAh 3.7v Rechargeable Flat Top Batteries

Samsung doesn’t need any introduction as it is a leading manufacturer of gadgets, gizmos, and electronics. You can buy high-quality laptops from it as well as smartphones, tablets, and fitness watches.

We have selected the 2500mAh 3.7v rechargeable batteries because they come at a reasonable price, they have lots of positive reviews all over the internet, and you receive 4 of them in one pack. These batteries can be completely recharged in about 3 hours and they have a capacity of 2500mAh. These batteries also feature a rapid charge state in which they can be charged in just an hour if you're rushing and need power for your flashlight or remote quickly.

Samsung makes more useful batteries such as the following ones:
  • Original 3.7V Batteries – designed for Samsung E1360
  • 1500mAh 3.7v Standard Lithium Ion Battery – for cell phones and cameras
  • Samsung BP-2000 3.7V Li-Ion Battery – for Galaxy Camera 2
The Canon 3.7v Lithium-Ion Battery Pack is designed to work with certain Canon Power Shot cameras and it has a capacity of 1,060mAh. This is a lithium-ion battery which means it will last for a long period of time with maximum performance. Another option for replacement Canon NB-6LH 3.7 volt batteries is Powerextra, a well known maker of replacement batteries.

Canon 3.7v Lithium-Ion Battery Pack - 110/220 Voltage, 1060 mAh Capacity, Good for Canon Power Shot Cameras

Canon is widely known for making some of the best digital cameras and DSLR cameras in the world. It also specializes in photography accessories such as lenses, tripods, chargers, batteries, camera kits, and more. This popular manufacturer from Japan stands out thanks to its innovative products and broad range of accessories sold including printers, cables, and even binoculars, among other items.

If you have a Canon Power Shot camera, the NB-6LH Battery Pack from Canon might be suitable for you. This lithium-ion battery has a capacity of 1060mAh and it can charge at 110v and 220v power outlets, so it can be used worldwide. At first glance, you'd say that this is a phone battery because it is compact and lightweight, but remember that it was designed for specific Canon Power Shot cameras.

To make sure this model is compatible with your camera, check out the Canon website or your digital camera's instructions manual. The good news is that the package includes the popular Canon hologram which ensures you are getting a high-quality, original product.
The Universal Li-ion Rechargeable Batteries from Nitecore have a capacity of 3,400mAh each and are certified by CE & ROHS, making them ideal for a wide variety of household gadgets. This pack contains 2 batteries. If you need a 700mAh 7A 3.7V Rechargeable Battery, Nitecore offers those as well.

Nitecore Universal Li-ion Recharger Battery with 3400mAh Capacity – 500 Charging Cycles

Nitecore is a cool brand which makes tons of attractive gadgets and gizmos for people of all ages. Apart from its extensive range of rechargeable batteries, Nitecore also makes powerful flashlights, key chains with LEDs, tactical pens, diffusers, and much more. Its products are generally well-accepted by the public and they can be easily identified by the black and yellow color theme incorporated into their design.

This color theme is present on the Universal 3.7v 3,400mAh Rechargeable Batteries from Nitecore as well! This pack contains 2 batteries which can be used for various devices including flashlights, remotes, kids’ toys, and others. The main advantage of these batteries consists of the PCB protection circuit which basically prevents overcharging and accidental discharging. As a result, you are going to enjoy these batteries for a long period of time.

We also like that these batteries can easily withstand 500 charging cycles and the overall price of the package is affordable. Nitecore has many other batteries with different capacities, so this is just one excellent example from its battery line. We also recommend using a Nitecore charger to ensure that your batteries run as smooth as possible—but obviously, that's up to you!
The 3.7V 3000mAh Li-ion Rechargeable Batteries from EBL are a Best Seller at the moment of this writing and they can take up to 1000 recharging cycles, which is impressive! This particular item even comes with a charger. Don't need the charger? Go for just the EBL CR2 3.7V 400mAh Lithium rechargeable batteries.

EBL Fast Lithium Battery Charger with 3.7V 3000mAh 18650 Li-ion Rechargeable Batteries

EBL specializes in batteries and battery chargers, and many of its products are Best Sellers at the moment of this writing. The batteries made by EBL are long-lasting, they can be charged quickly, and they have different power capacities such as 2500mAh, 5000mAh, and so on. With the passing of time, EBL has seriously developed its products and today it also sells flashlights, improved chargers for large batteries, and similar power sources.

The 3000mAh 18650 Li-ion Rechargeable Batteries from EBL come in a pack of 4 and they can be used for different types of electrical devices. Best of all, you get 4 in a pack at a special price and these batteries can hold up to 1000 recharging cycles.

If you like EBL products already, here are some more attractive items from this brand:
  • 3.7V 925mAh Li-ion Battery – for OLYMPUS LI-50B
  • 6 Pack 10,000mAh D Rechargeable Batteries – for two-way radios and other devices
  • 3.7V Lithium-ion Batteries – pack of 8; come with self-discharge function

How to Choose the Best 3.7V Battery for Flashlights, Laptop Battery Packs, Solar Lights, Cameras and More

Most people are not aware that batteries are among the most useful, practical, and necessary accessories we use every day. These items store energy and allow you to enjoy a comfortable, convenient, and modern lifestyle. Your phone has a battery. Your laptop has one. If you use digital cameras, flashlights, or remotes, they might have different types of batteries as well. Even modern electric cars are using rechargeable batteries which allow them to power down the road with speeds of up to 120 miles per hour or more. Now you get how important batteries are?

One of the main advantages of modern batteries is that they’re rechargeable. That means you can use them hundreds of times without having to go to a shop and buy new ones. You simply plug them into a battery charger, stick that into your power outlet, and in a few hours your batteries are brimming with electricity again. If you go camping for a weekend, you can actually recharge multiple batteries, take them with you, and use them for your digital camera or video recorder.

There are also different types of batteries available on the market and they are made by various brands. During our research, we found out that there are lesser known brands such as Ultrafire and LHling whose 3.7 batteries are worthy of consideration. We simply didn't have room for more than 5!. ,

In this review and guide, we’re going to take a look at a few 3.7V batteries to see how they stack up.

Battery Types As Fast As Possible

How batteries work and the differences between alkaline & rechargeable batteries? | Courtesy of Techquickie
Batteries are not expensive accessories, and that’s a good thing. You can find a good pair of 3.7V rechargeable batteries for something between approximately $25 and $40. In a similar fashion, more-sophisticated batteries can cost upwards of $40, but these are usually designed for specific gadgets or come with features such as a protection circuit board.

As a general rule of thumb, budget-friendly batteries cost up to $25, middle-range batteries can cost between $25 and $38, while high-end ones might cost $40 or more. Keep these numbers in mind when coming up with a budget to buy batteries for your electronic equipment.

During our research, we also found a plethora of cheap 3.7V batteries on the market, but we think that they don’t provide good value for your money. These batteries either have poor durability or take ages to recharge. Especially if you use your gadgets regularly (flashlights, cameras, etc.), it’s worth spending a couple bucks more to get a quality, reliable item.
Believe it or not, today's 3.7V batteries also come with various features. Don’t make impulse purchases; read on and find out exactly what to look for when buying rechargeable 3.7V batteries.
  • Type - Some batteries are specifically designed to work with certain camera models, such as Nikon Coolpix cameras. Other batteries are universal and can be used for powering remotes, regular cameras, or flashlights.
  • Pieces - Certain brands offer you more than just 2 batteries in the package; they might include up to 4. Obviously, that's better value for your money.
  • Accessories - In some cases, you have the option to buy the batteries with or without a charger. If you already have a device to charge your batteries, this is where you can save money and go just for the replaceable batteries.
  • mAh Figure - The mAh stands for milliampere per hour, which is basically a way of measuring the capacity of a battery. This is similar to your cellphone battery's mAh number and the higher it is, the more power the battery can store. As a result, you’ll be able to use these rechargeable batteries for a longer period.
Construction and Design
Most 3.7V rechargeable batteries are based on the Lithium Ion technology, which gives them a long lifespan and enhanced durability. Certain batteries can even be used up to 1000 times! In other words, if you’re recharging them daily, you’ll be able to use these batteries for nearly 3 years.

Today's batteries are also designed to maintain approximately 3 quarters of their full capacity if they haven’t been used for a whole year. Basically, if you don’t use these batteries for 12 months, when you use them again you’ll still be able to enjoy 75% of their original capacity. In a similar fashion, some higher-end batteries are designed with a protection circuit, which prevents dangerous events such as small explosions or even fires.
Performance and Ease of Use
When it comes to performance, 3.7V rechargeable batteries can be used just as regular batteries are. For example, they are useful for powering digital cameras, remotes, flashlights, 2-way radios, walkie-talkies, and even certain e-cigarettes. Obviously, it’s wise to check the label of the battery package to make sure they’re compatible with the types of gadgets you have.

Get the Best 3.7V Battery of 2022!

As you can see, some of these are among the best 3.7V batteries out there and can be recharged more than 1000 times, which is highly reassuring. Grab your own rechargeable batteries now and you will be able to use your electrical goods indefinitely!

Our Top Choice
ORBTRONIC Protected 3.7V Rechargeable Li-ion Batteries
Best Value
Samsung 2500mAh 3.7v Rechargeable Batteries
Canon 3.7v Lithium-Ion Battery Pack
Nitecore 3.7V Protected Li-ion Rechargeable Batteries
EBL 3.7V Li-ion Rechargeable Batteries

3.7V Battery FAQs

How to charge a 3.7v lithium-ion battery
To charge a 3.7 volt lithium battery you must have the right lithium-ion battery charger. You can use a USB charger or one that has both the USB and DC options. USB charging is for single-cell batteries and can provide charge of up to 500mAh. The USB/DC charger is for bigger batteries and can charge up to 12V.
How to charge a 3.7v battery without a charger
The easiest option to charge a 3.7 volt battery without a battery charger is to use a USB cable and connect it to a laptop or a USB jack in your car. If you are looking for alternative energy sources to charge your batteries, you can invest in a solar-powered charger.
What do numbers mean on 3.7v battery?
The numbers on a 3.7 volt battery indicate the voltage of the battery. For example, if you see the number 3.7/4.2V, it means the battery’s maximum charge is 4.2V but once you start using it will drop to 3.7V and the battery will be dead if it reaches 3.4V.