Updated: 16 Feb 2025

3.7vs

Explore up to 21% Off

Updated: 16 Feb 2025

#1

Best Choice
4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440

9.8

Generic

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Why we love it

Charges multiple battery types easily.

Portable and travel-friendly.

Long-lasting battery performance.

Main highlights

Smart Charging Technology
Intelligent four-slot charger with individual channels for versatile battery charging.

Ideal for Travelers
Universal USB interface allows convenient charging anywhere, anytime.

Extended Battery Life
Customers appreciate the longer-lasting charge compared to other batteries.
#2

Value for Money
MakerFocus 4pcs 3.7V 2000mAh Lithium Rechargeable Battery 1S 1C LiPo Battery with Protection Board Insulated Rubber Tape and Micro JST 1.25 Plug for Arduino ESP32 Development Board

9.7

MakerFocus

-15%

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Main highlights

Overcharge Protection: When charging the battery, when the voltage reaches the highest battery voltage (4.2V), the protection board will automatically power off and shut down, indicating that it will not continue to charge when fully charged, form an overcharge protection

Over-discharge Protection: When the battery is about to run out and the voltage is as low as 3.0V, the protection board will also be turned off and can no longer be discharged, forming an over-discharge protection effect

Charging Method: The recommended charging current of the battery is 0.4A, the maximum does not exceed 2A. The recommended discharge current is 1A, and the maximum does not exceed 2A. This battery protection board is equipped with two mos tubes, overcurrent protection (instantaneous) 3.2A-5A, charging voltage setting recommended 4.2V

-15%
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#3
AFSONGOO 18650 Battery 3.7 Volt 2 Packs 18650 Button Top Battery 3400mAh 18650 Rechargeable Batteries 18650 for Flashlights, Headlamps, Doorbells, RC Cars

9.6

AFSONGOO

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Main highlights

Wide Compatibility: Widely used for LED flashlights, solar lights, racing, game controller, emergency lights, portable devices, headlamps, toys, remote controls, doorbells and other electronic devices.

Product Dimensions: 67*18*18mm/2.64*0.71*0.71inch. NOTE: These are BUTTON TOP 18650 batteries with metal tip on the positive end. Please confirm the battery size and battery type before purchase

Advanced Smart Cell Technology: The built-in intelligent battery cell ensures efficient power management and longer-lasting usage.
#4
Generic 2 Pack 18650 5000mAh Rechargeable Battery 5000mAh Wiith 18650 Battery Charger, Universal Charger Single Slot for 3.7V Rechargeable Batteries 21700 14500 10440

9.5

Generic

-12%

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Why we love it

Charges multiple battery types.

Improves flashlight beam strength.

Long-lasting battery charge.

Main highlights

Universal Compatibility
Charges various 3.7V cylindrical lithium batteries, ensuring versatility.

Ideal for High-Performance Devices
Perfect for flashlights, digital cameras, and more, enhancing usability.

Enhanced Battery Life
Praised for long-lasting charge and improved performance in devices.

-12%
#5
TEKOWEE 2 Pack 3.7 Volt 18650 Rechargeable Battery, 3000mAh Battery Flat Top Lithium Battery for Headlamp, LED Flashlight, Fans, Cameras, Toys, Radios, Surveillance Devices

9.4

TEKOWEE

-20%

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Main highlights

[Wide Compatibility] The long-lasting 3.7v battery is compatible with versatile devices, such as LED flashlights, headlamps, pathlights, emergency lights, portable devices, garden lights, small fans, toys, remote controls, doorbells and other electronic devices.

[Rechargeable and Durable] 3.7v rechargeable battery can be cycled more than 2000 times, no need to buy batteries frequently, save a lot of money.

[3.7V Lithium Battery] TEKOWEE rechargeable battery flat top 3000mAh high capacity, Size: 2.55*0.7inch(65*18mm). Please confirm whether your device is suitable before purchasing.

-20%
#6
sea Jump 5PCS 3.7V 400mAh Li Battery with 5in1 Charger for SYMA Q11 H99W H31 H6C H98 TR-C385 TR-P51 TR-F22 Quadcopter Parts Aircraft Model Drone Battery AT-96

9.3

sea jump

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Why we love it

High capacity for movements

3.7V and 400mAh voltage

Comes with 5 batteries and 1 charger.

Main highlights

Key Features
High-capacity 400mAh 3.7V lithium batteries enhance drone performance for complex maneuvers; includes versatile 5-in-1 charger.

Ideal Use Cases
Perfect for drone enthusiasts seeking extended flight times and complex aerial stunts with compatible models like H99W, H31, and TR-F22.

Customer Praise
Buyers frequently commend the significantly improved flight duration, noting it as the top benefit and worth the investment.
#7
EEMB Lithium Polymer Battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

9.2

EEMB

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Why we love it

Small size and lightweight

Reliable performance

UL certified and UN 38.3 compliant

Main highlights

Key Features
3.7V, 2000mAh capacity, with PCM protection for overcharge and short circuit, ensuring reliability and long life.

Ideal Use Cases
Perfect for Bluetooth speakers, dash cams, smart home systems, and medical tracking devices, offering versatility and efficiency.

Customer Praise
Highly valued for its no-leak design and consistent performance, with particular appreciation for the safety features and long cycle life.
#8
Skywolfeye 2 Pack 18650 Rechargeable Battery 3.7v Battery 18650 Rechargeable Battery Lithium 3.7 Volt Button Top for Flashlights, Headlamp etc

8.9

Skywolfeye

-21%

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Main highlights

Widely Compatible: 3.7 volt 18650 rechargeable battery for flashlights, headlights, digital cameras, doorbells,toys, radios, speakers, Electronic Device. this 3.7v battery is highly portable, making it convenient for travel, camping trips

Product Size: 67*18*18mm/2.63*0.7*0.7inch; it's a 3.7 volt rechargeable battery BUTTON TOP, please check carefully before purchasing

Package Includes: 2 pack button top batteries

-21%
#9
MakerFocus 3.7V LiPo Battery 10000mAh Lithium Rechargeable Battery with Integrated Protective Board, Insulation Coating and PH2.0A Plug for Raspberry Pi UPS Board and Other

8.8

MakerFocus

-15%

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Main highlights

Safety: Passed the MSDS test and the UN 38.3 test recognized by the United Nations to ensure that the chemical substances are not exceeded, and the use is safe and reliable

Note: The maximum operating current of this 3.7V 10000mAh lipo battery is only about 3A, can not be used for unmanned aerial vehicles, model aircraft or power tools and other products that require high current

Application: 1S 10000mAh lipo batteries can be used for Raspberry Pi UPS board whose plug PH2.0A

-15%
#10
2 Bay 18650 Rechargeable Battery Charger,Smart Charger for Flashlight Headlamp 3.7Volt Lithium ion Batteries(2Pcs Button Top Ba￵￵tt￵er￵￵y+Charger)

8.7

Tokeyla

-11%

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Main highlights

【You Will Get】2 bay battery charger 2 Button Top ba￵￵tt￵eries, smart batteries charger is only for 3.7v lithium ion rechargeable battery

【Safety Protection】 Under voltage protection, over voltage protection, over current protection, over temperature protection, short circuit protection, anti-reverse battery protection, Zero Volume Battery Repair and excellent heat dissipation design

【Charging Indicator】When the indicator is RED, it means charging; when it's BLUE, it means full charged; make sure you put the battery in position and it contacts with charger

-11%

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Our top pick

#1

4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440
The Skywolfeye 4 Pack 18650 Rechargeable Battery with Universal Smart Charger is a versatile solution for those needing reliable power on the go. Its intelligent four-slot design accommodates various battery types, including 26650, 18650, and 14500, making it ideal for a wide range of electronic devices. The universal USB interface ensures you can recharge your batteries anytime, anywhere, which is particularly beneficial for travelers. Users have praised the batteries for their extended charge duration, outperforming many standard options. Although they may not reach the full 9900mAh capacity as advertised, they still offer excellent performance for most applications. This product is a great value, providing long-lasting power and convenience for both everyday use and more demanding scenarios.

3.7vs

4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440

9.8

Why we love it

Main highlights

MakerFocus 4pcs 3.7V 2000mAh Lithium Rechargeable Battery 1S 1C LiPo Battery with Protection Board Insulated Rubber Tape and Micro JST 1.25 Plug for Arduino ESP32 Development Board

9.7

Main highlights

AFSONGOO 18650 Battery 3.7 Volt 2 Packs 18650 Button Top Battery 3400mAh 18650 Rechargeable Batteries 18650 for Flashlights, Headlamps, Doorbells, RC Cars

9.6

Main highlights

Generic 2 Pack 18650 5000mAh Rechargeable Battery 5000mAh Wiith 18650 Battery Charger, Universal Charger Single Slot for 3.7V Rechargeable Batteries 21700 14500 10440

9.5

Why we love it

Main highlights

TEKOWEE 2 Pack 3.7 Volt 18650 Rechargeable Battery, 3000mAh Battery Flat Top Lithium Battery for Headlamp, LED Flashlight, Fans, Cameras, Toys, Radios, Surveillance Devices

9.4

Main highlights

sea Jump 5PCS 3.7V 400mAh Li Battery with 5in1 Charger for SYMA Q11 H99W H31 H6C H98 TR-C385 TR-P51 TR-F22 Quadcopter Parts Aircraft Model Drone Battery AT-96

9.3

Why we love it

Main highlights

EEMB Lithium Polymer Battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

9.2

Why we love it

Main highlights

Skywolfeye 2 Pack 18650 Rechargeable Battery 3.7v Battery 18650 Rechargeable Battery Lithium 3.7 Volt Button Top for Flashlights, Headlamp etc

8.9

Main highlights

MakerFocus 3.7V LiPo Battery 10000mAh Lithium Rechargeable Battery with Integrated Protective Board, Insulation Coating and PH2.0A Plug for Raspberry Pi UPS Board and Other

8.8

Main highlights

2 Bay 18650 Rechargeable Battery Charger,Smart Charger for Flashlight Headlamp 3.7Volt Lithium ion Batteries(2Pcs Button Top Ba￵￵tt￵er￵￵y+Charger)

8.7

Main highlights

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Our top pick

4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440

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