If you have been searching for the best 18650 4000mah, you probably have noticed that not all models have the same specifications, some can adapt better than others to different tasks. To help you choose the product you need, we have gathered 10 of the best 18650 4000mah from different categories on the market.

Best 18650 4000mah

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Our system have put together a list of options that will meet the needs of different types of buyers, so whether it’s price performance or its particular use, we have got you covered for more information on the products we have included links in the list down below which are updated for the best prices.

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1 used from $12.59
Free shipping
Amazon.com

Features

Part Number 1594-BS69002
Model 1S2P 16.28Wh/4.4Ah 2.54 Jst-XH
Color blue
2 new from $14.99
Free shipping
Amazon.com

Features

Warranty 30 Days
Size 2 Pack 5000mAh

  • 【Safe and Universal】Uiversal Battery Charger--Can charge for different types of DC 3.7V cylindrical lithium batteries.You Will Get: 1×Uiversal Battery Charger,2×1￵8￵6￵50 bu￵tt￵on t￵op bat￵ter￵y.
  • 【Multiple Rrotection】Comes with special charge and discharge management circuit. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery, which makes users using the product without any safety concern.
  • 【Charging Display】This Battery charger with Red/Green led light display, And the charger will display the status of each rechargeable battery when charging, Automatically detects battery power status and displays charging progress, and automatically stops charging when complete.
  • 【Compatible Devices】Standby power supply for flashlights, headlights, fans, digital cameras, children's toys, radios, speakers,camcorde, surveillance equipment.
  • No Standalone lithium batteries are sold with the product.

2 new from $10.98
Free shipping
Amazon.com

Features

Warranty 30 days
Color Green,Red
Size 2pcs Button Top Batter￵￵y

  • Compatible Devices: Rechargeable battery for flashlights, headlights, fans, digital cameras, children's toys, radios, speakers, Camcorders ,surveillance equipment. the product excludes the sale of restricted Standalone lithium batteries
  • 【Customer Service】If there are any questions or quality problems please contact us for more support
  • Compatible Devices: Rechargeable battery for flashlights, headlights, fans, digital cameras, children's toys, radios, speakers, Camcorders ,surveillance equipment

3 new from $29.88
1 used from $29.19
Free shipping
Amazon.com

Features

Part Number AB07USTZ899
Warranty 30 Days
Color Green,Red
Size Button Top Type

  • 【Safe and Universal】UNIVERSAL BATTERY CHARGER--Can charge for different types ofrechargeable batteries
  • 【Multiple protection】Comes with special charge and discharge management circuit. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery, which makes users using the product without any safety concern
  • 【Charging display】This Battery charger with Red/Green led light display, And the charger will display the status of each rechargeable battery when charging, Automatically detects battery power status and displays charging progress, and automatically stops charging when complete
  • 【Customer Service】If there are any questions or quality problems please feel free to contact us for more support
  • Compatible Devices: Rechargeable battery for flashlights, headlights, fans, digital cameras, children's toys, radios, speakers, surveillance equipment

2 new from $16.99
Free shipping
Amazon.com

Features

Model 2 bay charger
Warranty 60 days
Color Green,Red
Size 2pcs Battery + 2 Bay Charger

  • You Will Get: 1 x 2 slots smart battery wall charger, 2 button top b￵atte￵ries.
  • Charging Indicator: When the indicator is RED, it means charging; when it's GREEN, it means full cha￵￵rged; make sure you put the battery in position and it contacts with charger.
  • Wide Compatibility: Battery charger tool compatible for high power devices, such as headlamp, flashlight, radio, cameras, doorbells, LED lights, solar lights, toys, small fans, RC car, headlights, etc.

2 new from $21.98
Free shipping
Amazon.com

Features

Part Number 310012B6
Model 310012B6
Warranty 12months
Size 6 B￵ATTE￵RIES

  • 【Wide Compatibility】Compatible with flashlights,headlamps, doorbells, small fans, digital cameras, children's toys, radios, speakers, Camcorders. Helps you wake up your devices quickly.
  • YOU WILL GET: 6 B￵UT￵TO￵N T￵OP B￵ATTE￵RIES

2 new from $21.99
Free shipping
Amazon.com

Features

Part Number TZ652
Model TZ652
Warranty 12 months
Color black or white
Size 4 Battery+ Charger

  • YOU WILL GET: 4 B￵UT￵TO￵N T￵OP B￵ATTE￵RIES and Universal Charger
  • 【Wide Compatibility】Compatible with flashlights,headlamps, doorbells, small fans, digital cameras, children's toys, radios, speakers, Camcorders. Helps you wake up your devices quickly.

2 new from $9.99
Amazon.com

Features

Model AC13US310019FT
Warranty 30 days
Is Adult Product
Size 2 PACK

  • Package Includes: 2 pack button top batteries
  • 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
  • Multiple Protections: This 3.7v 18650 battery features six types of protection, including temperature, short circuit, overcharge, and overcurrent protection. These features ensure the battery remains stable and your device stays protected at all times.Please fully charge the battery before the first use, the battery will work better. Charge up to 1000 times without frequent battery changes

Amazon.com

Features

Model 3.7v rechargeable battery
Warranty 1 Years
Size 2 Pack Battery Flat Top

  • Rechargeable battery: JESSY 3.7V Lithium Battery, this is flat-top rechargeable Batteries, Size 18 * 65 * 18mm (2.56*0.7*0.7inch), the Size is NOT AA/AAA battery, please confirm the battery size and battery type before purchase
  • Wide Compatibility: 3.7V rechargeable battery compatible with headlamps, flashlights, radio, garden lights, doorbells, small fans, toys, etc
  • High Performance: 3300mAh large capacity rechargeable battery which supports stable power for your devices and effectively prevents damage of the devices, such a perfect replacement battery for used devices with high frequency
  • Multiple Protections: This 3.7V battery is without any memory effect and provide multiple protections, including short circuit, overcharge, and overcurrent protection. Prefectly make the battery to be more stable and safe to protect your devices
  • 100% Guarantee: If you do not like our 3.7V lithium batteries, please contact us and we will replace them or give you a full refund

2 new from $23.98
Amazon.com

  • [Intelligent four-slot battery charger] The USB cable charger can be connected to the mobile phone charger, computer, rechargeable battery, etc., for charging, easy to carry. Red light when charging, green light when full
  • 【Durable rechargeable】Rechargeable 99￵￵00m￵￵A￵￵h 18650 charger B￵at￵t￵￵ery ,Which can be widely suitable for electronic devices, such as doorbells,LED flashlights, emergency lights, portable devices, headlights, toys , remote controls, etc
  • 【4 Bay 18650 charger 】 4 channel can be individually for 26650, 18650, 18600, 14600, 14500 batteries, or for multiple battery charge (same type).With multiple security protection settings, the 4 Bay charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the Li-ion battery
  • 【Universal USB interface】 The working voltage of the battery charger is 5V, USB charging can help travelers recharge their lithium-ion batteries anytime, anywhere, especially if you don't have enough outlets
  • [Warm After-sales Service] If you find bump damage product, please email as soon as possible, we will responsible for replacing all quality related issues