20 Best 4000mah 18650 Battery [2023]

Are you looking for the best 4000mah 18650 battery ? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 4000mah 18650 battery .

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1 Tokeyla 5 Modes Flashlight with Two-Slot Charger and 6 -Pack 18J Rechargeable Battery Waterproof... Tokeyla 5 Modes Flashlight with Two-Slot Charger and 6 -Pack 18J Rechargeable Battery Waterproof...
2 4000mAh 18650 Battery Pack BOS14.4B Li-ion Battery 14.4V Replacement for Bosch BAT607 BAT607G BAT614... 4000mAh 18650 Battery Pack BOS14.4B Li-ion Battery 14.4V Replacement for Bosch BAT607 BAT607G...
3 3.7 Volt 4000mAh Rechargeable Battery with Wire and JST Connector 3.7 Volt 4000mAh Rechargeable Battery with Wire and JST Connector
4 WindFire® New Wf-502b Cree Xm-l T6 LED 1000 Lumens 1 Mode Flashlight Torch plus 2x WindFire 4000mAh... WindFire® New Wf-502b Cree Xm-l T6 LED 1000 Lumens 1 Mode Flashlight Torch plus 2x WindFire...
5 PWGN Cycle Ni-Mh Pre-Charged Rechargeable Batteriesndegdgswg 3.7V 18650 4000Mah 4400Mah 6000Mah... PWGN Cycle Ni-Mh Pre-Charged Rechargeable Batteriesndegdgswg 3.7V 18650 4000Mah 4400Mah 6000Mah...
6 Emergency Crank Weather Radio, 4000mAh Solar Hand Crank Portable AM/FM/NOAA Weather Radio with 1W 3... Emergency Crank Weather Radio, 4000mAh Solar Hand Crank Portable AM/FM/NOAA Weather Radio with 1W...
7 IMR 18500 1300mAh 3.7V High Drain LiMn Demonfire Rechargeable Battery with Button Top (2 Pieces) IMR 18500 1300mAh 3.7V High Drain LiMn Demonfire Rechargeable Battery with Button Top (2 Pieces)
8 IMREN 3.7V Rechargeable Lithium Ion Battery 4500mAh with USB Port and Protection Circuit,with a... IMREN 3.7V Rechargeable Lithium Ion Battery 4500mAh with USB Port and Protection Circuit,with a...
9 4 Piece IMR 18500 1300mAh 3.7V High Drain LiMn Demonfire Rechargeable Battery with Button Top 4 Piece IMR 18500 1300mAh 3.7V High Drain LiMn Demonfire Rechargeable Battery with Button Top
10 18650 Rechargeable Li-ion Battery 3.7V 4000mAh Large Capacity Lithium Batteries Sa-fe Accessories... 18650 Rechargeable Li-ion Battery 3.7V 4000mAh Large Capacity Lithium Batteries Sa-fe Accessories...
11 18650 Lithium Battery Charger, Suitable for Lithium Battery 18650 26650 10440 14500 18500 16340... 18650 Lithium Battery Charger, Suitable for Lithium Battery 18650 26650 10440 14500 18500 16340...
12 18650 Tactical 5 Modes LED Flashlight with 2-Pack 3.7V 5000mAh Rechargeable Batteries and Charger... 18650 Tactical 5 Modes LED Flashlight with 2-Pack 3.7V 5000mAh Rechargeable Batteries and Charger...
13 Authentic AllForBest-3000mAh with Sam-Sung Core Inside (4 Pack) Authentic AllForBest-3000mAh with Sam-Sung Core Inside (4 Pack)
14 LED 8000 Lumens Headlamp Flashlight ,with 6PCS 3.7V 9900mAh Rechargeable 18650 Battery + Batteries... LED 8000 Lumens Headlamp Flashlight ,with 6PCS 3.7V 9900mAh Rechargeable 18650 Battery +...
15 IMREN 3.7v Rechargeable Battery 3000mAh for Flashlight/Drone/Headlamp/RC Car (2 Pack) IMREN 3.7v Rechargeable Battery 3000mAh for Flashlight/Drone/Headlamp/RC Car (2 Pack)
16 Skywolfeye 8 Pack 3.7v 5000mAh 18650 Rechargeable Battery and 2 Slot Charger with 1Pcs 18650... Skywolfeye 8 Pack 3.7v 5000mAh 18650 Rechargeable Battery and 2 Slot Charger with 1Pcs 18650...
17 Skywolfeye 6 Pack 3.7v 5000mAh 18650 Rechargeable Battery and 2 Slot Charger with 1Pcs 2000 Lumen... Skywolfeye 6 Pack 3.7v 5000mAh 18650 Rechargeable Battery and 2 Slot Charger with 1Pcs 2000 Lumen...
18 Skywolfeye 2 Packs High 4000 Lumens 18650 Led Flashlight Torch with 4Pcs 3.7v High Capacity... Skywolfeye 2 Packs High 4000 Lumens 18650 Led Flashlight Torch with 4Pcs 3.7v High Capacity...
19 Super Bright 2000 Lumen 18650 Tactical Flashlight and 6PCS 3.7V High Capacity Rechargeable... Super Bright 2000 Lumen 18650 Tactical Flashlight and 6PCS 3.7V High Capacity Rechargeable...
20 WISSBLUE 18650 Battery Charger, LCD Screen Can Display Capacity, 2a Fast 18650 Charger, Suitable for... WISSBLUE 18650 Battery Charger, LCD Screen Can Display Capacity, 2a Fast 18650 Charger, Suitable...
Bestseller No. 1
Tokeyla 5 Modes Flashlight with Two-Slot Charger and 6 -Pack 18J Rechargeable Battery Waterproof...
  • What you get: 1 x S30 flashlight with 1 x two-slot charger and 6 x 18J recharge￸able ba￸tter￵y.
  • Safe feature: Our lithium 3.7v re￸charg￸eable b￸atteri￵es are CE and RoHS certified with short circuit, over current and voltage surge...
  • Superior performance: Beats any weather never encounter a dead battery even during extreme weathers ranging from -40 °C to 85 °C/ -49 °F to 185 °F
  • Note: Button top rech￸arge￸able ba￸tt￸ery(not flat top, not AA or AAA battery, not fit mod/E-CI)
SaleBestseller No. 2
4000mAh 18650 Battery Pack BOS14.4B Li-ion Battery 14.4V Replacement for Bosch BAT607 BAT607G BAT614...
  • Brand and New|Battery Type:Li-ion| Voltage:14.4V|Capacity:4000mAh| Colo:Black&Red|NO FAKE HIGH-LABEL CAPACITY
  • Professional replacement battery for BOSCH DDB180-02,GDR1080-LI,GDR14.4V-LI,GDR14.4V-LIMF,GDR14.4V-LIN,...
  • No memory effect and Can be charged or discharged as needed without loss of capacity.
  • High quality battery cells can increasing to use for longer running time.Products are FCC, RoHS and CE certified, tested by manufacturer to match OEM...
  • We guarantee to provide safety and full capacity replacement batteries. We also offer you 100% risk-free satisfaction guarantee to let you buy with...
Bestseller No. 3
3.7 Volt 4000mAh Rechargeable Battery with Wire and JST Connector
  • 【CELL SPECIFICATIONS】:18650 4000mAh 3.7V rechargeable li-ion lithium battery. Note:In order to avoid a dead battery when using it for the first...
  • 【WIDE APPLICATION】:This 3.7V 4000mAh rechargeable battery can be used in battery-powered equipment, such as replacing rechargeable battery...
  • 【HIGH PERFORMANCE】:DIY Professional 18650 Battery Pack with the nominal voltage of each cell = 3.7 V.High continuous discharge rate, Low recurrent...
  • 【SAFETY ASSURANCE】:Temperature protection,Intelligent protection IC board,Stable Capability,Durable,A+ battery cell,Over charge protection,Over...
  • 【BATTERY SIZE】: Φ19mm*L:69mm. The connection length is 2.7 Inches. Please Check the battery size and connector type.
Bestseller No. 4
WindFire® New Wf-502b Cree Xm-l T6 LED 1000 Lumens 1 Mode Flashlight Torch plus 2x WindFire 4000mAh...
  • CREE XML T6 1000 Lumen LED flashlight
  • Aluminum alloy casing with o-rings for waterproof and shockproof design.
  • 1 switch mode, Easy to operate, One-Button-Operation
  • Power Source: work with 1 x 18650 Battery
  • Perfect flashlight for outdoor activities like hiking, camping, hunting, and so on.
Bestseller No. 5
PWGN Cycle Ni-Mh Pre-Charged Rechargeable Batteriesndegdgswg 3.7V 18650 4000Mah 4400Mah 6000Mah...
  • Nominal capacity: 4000mah 4400mAh 6000mah
  • Product size: 19 x 37 x 66mm Voltage: 3.7 V
  • Standard weight: about 90g
  • recommended charge current: 2A
  • The battery pack is widely used in headlights, miner's lamp, flashlight, searchlight, loudspeaker (loudspeaker), wireless monitoring equipment,...
SaleBestseller No. 6
Emergency Crank Weather Radio, 4000mAh Solar Hand Crank Portable AM/FM/NOAA Weather Radio with 1W 3...
  • ★【 Newest Design MD-090P】Based on MD-090 emergency flashlight radio and customer's feedback, we've optimized and upgraded a lot of features. A...
  • ★【The Most Powerful Life Saver Radio】Nature is unpredictable, but you can be prepared and ready in the face of her fury. The emergency crank...
  • ★【4 CHARGING MODES】Compared with 2000mah or 1000mah emergency radio on the market, the solar radio has upgraded to 4000mAh rechargeable battery,...
  • ★【Super-Bright 3 Mode Flashlight And Motion Sensor Reading Lamp】 If you are an outdoor enthusiast or need to walk in places without lights, the...
  • ★【We Care About You and The ones Your loved】 In the past years, Our emergency radio has helped more than 10,000,000 USA Civilians to live...
Bestseller No. 7
IMR 18500 1300mAh 3.7V High Drain LiMn Demonfire Rechargeable Battery with Button Top (2 Pieces)
  • These are size 18500 batteries. Please double check the size you need before purchasing. 18500 batteries have a diameter of 18mm (0.71 in.) and a...
  • Long-lasting 1300 mAh Li-Mn rechargeable button top batteries with 16.5A amp limit. 18500 batteries are commonly used in solar landscape lighting.
  • Safe chemistry LiMn batteries with high thermal stability significantly reduces risk of explosion or bursting into flames when properly charged, used,...
  • No memory effect and can be recharged over 300 times when either partially or fully drained
  • Includes two dual battery storage cases to safely and securely store and protect your batteries. US based seller dedicated to the highest standards of...
Bestseller No. 8
IMREN 3.7V Rechargeable Lithium Ion Battery 4500mAh with USB Port and Protection Circuit,with a...
  • 【IMREN 3.7v rechargeable li-ion battery】 - 3.7v rechargeable li-ion batteries size:21mm x 75mm;Capacity: 4500mAh,Voltage: 3.7V, Max continuous...
  • 【IMREN USB rechargeable battery】- The built-in USB-C interface and the attached cable can be charged anytime and anywhere without a charger.
  • 【IMREN lithium ion battery】-Independent packaging, unique hook design, easy to carry, and will not be lost when hung on the backpack when going...
  • 【4500mAh Capacity】 -High capacity 4500mAh(16650mWh) battery will be full charged within 3 hours;The advantage of lithium ion battery is low...
  • 【NOTE:】 -Please confirm the size you need before purchasing, the Orange size is: 21mm*75mm; the Blue size is: 18mm*69mm. If you can't confirm,...
Bestseller No. 9
4 Piece IMR 18500 1300mAh 3.7V High Drain LiMn Demonfire Rechargeable Battery with Button Top
  • Long-lasting 1300 mAh Li-Mn rechargeable button top batteries with 16.5A amp limit. 18500 batteries are commonly used in solar landscape lighting.
  • Safe chemistry LiMn batteries with high thermal stability significantly reduces risk of explosion or bursting into flames when properly charged, used,...
  • No memory effect and can be recharged over 300 times when either partially or fully drained
  • Includes four dual battery storage cases to safely and securely store and protect your batteries
  • US based seller dedicated to the highest standards of quality and service
SaleBestseller No. 11
18650 Lithium Battery Charger, Suitable for Lithium Battery 18650 26650 10440 14500 18500 16340...
  • This lithium polymer battery charger contains current and Vmax detection program to prevent your batteries from overcharging, short circuit protection...
  • Using a usb port to charge, you can charge the battery on the charging head, on the car charger, or on the power bank, wide range of use, more...
  • Stops charging automatically if the temperature of charger or battery gets too high when charging
  • Stainless steel rail is more durable and smooth
Bestseller No. 12
18650 Tactical 5 Modes LED Flashlight with 2-Pack 3.7V 5000mAh Rechargeable Batteries and Charger...
  • Durability, Made of Military Grade Aluminum, works well in any conditions.
  • Resistant, water and shock resistant, can be used in the rain, snow situation.
  • Arrangement & Zoomable: 5 Mode High / Middle / Low / Flash / Strobe , zoom by pulling the head of the flashlight.
  • Tactical, Full Metal, and practical design makes it a perfect for camping, fishing, hunting or dog walking. Its size conveniently fits in your bag,...
  • Package includes,1x Skywolfeye Flashlights , 1x 2 Bay Charger ,2x 18650 Batteries (5000mAh)
Bestseller No. 13
Authentic AllForBest-3000mAh with Sam-Sung Core Inside (4 Pack)
  • 4 100% Authentic ALLFORBEST-3000MAH, which means everything!
  • Notes: ONLY authorized seller Christmas Surprise. If did not receive YELLOW ALLFORBEST-3000MAH, please report to Amazon.
Bestseller No. 14
LED 8000 Lumens Headlamp Flashlight ,with 6PCS 3.7V 9900mAh Rechargeable 18650 Battery + Batteries...
  • High-Capacity Performance Lasting: This rechargeable High Capacity battery that can last up to 3~6 hours with a single charge.The battery is perfectly...
  • LONG-LASTING, POWER DISPLAY: Come with 6PCS 3.7V batteries headlamp, it can work 18~25 hours with fully charged at normal temperature.
  • 4 WORKING MODES: Whether you prefer to use the lowest, most focused setting,the wider and splashier medium and high modes, or the bright...
  • ADJUSTABLE & LIGHTWEIGHT: Adjustable elastic headband compatible with all of people’s head size, soft elastic is comfortable to wear, lightweight...
  • High Quality Smart Charger: It is with high efficiency and reliability! There is a free USB Charger included.When Charging,the warming light show...
Bestseller No. 15
IMREN 3.7v Rechargeable Battery 3000mAh for Flashlight/Drone/Headlamp/RC Car (2 Pack)
  • 【IMREN rechargeable li-ion battery】 -IMREN rechargeable batteries size:18.3mm x 65.3mm, Capacity: 3000mAh, Voltage:3.7V, Max continuous dischaege:...
  • 【NOTE:】 - IMREN provides 24-hour after-sales service and will serve you wholeheartedly. We shipping from America.
Bestseller No. 16
Skywolfeye 8 Pack 3.7v 5000mAh 18650 Rechargeable Battery and 2 Slot Charger with 1Pcs 18650...
  • Ultra Bright:Intense spotlight for long range observation can up to 600 feet, Circle Floodlight for large area illumination.2000-lumen (max) powerful...
  • Five Light Modes&Zoomable: High / Middle / Low / Strobe / SOS, With ON / OFF button, easy to operate.
  • Works well outdoor, Good for search missions, routine patrolling, cave exploring, etc. Perfect as pocket flashlight, flashlight torch light, emergency...
  • Powered Source: 8 Pcs 3.7V 18650 Li-on Rechargeable Battery (Included) or 3aaa Batteries(Not Included) and 1Pcs Battery Charger.
  • Satisfaction Guaranteed: 2 Year Worry-free Warranty. If there are any issues with the flashlights at all, We will replace or refund your purchase, no...
Bestseller No. 17
Skywolfeye 6 Pack 3.7v 5000mAh 18650 Rechargeable Battery and 2 Slot Charger with 1Pcs 2000 Lumen...
  • [Package Included]: 1 x battery charger, 6 x 3.7v 5000 mah 18650 rechargeable batteries, 1x flashlight
  • [Zoomable & 5 Modes] can be switch 5 different modes through the On / Off button (High / Middle / Low / Strobe / SOS), Low light mode is enough for...
  • [18650 High Capacity battery]: Provide 6 pcs 3.7v high capacity 18650 rechargeable lithium battery and 1 pcs battery charger are included in the...
  • [Various Occasion] Suitable for both indoor and outdoor activities, routine patrolling, cave exploring,If you are a cycling enthusiast, then this...
  • [Perfect Service]:100% money back guarantee, always offer the best service for our customer.Please feel free to contact us when you have any problem....
SaleBestseller No. 18
Skywolfeye 2 Packs High 4000 Lumens 18650 Led Flashlight Torch with 4Pcs 3.7v High Capacity...
  • Include: 4 x 18650 rechargeable battery (lncluded),1X4-slot charger,2 X 18650 flashlight.
  • Brightness & Durability: High powered, high lumen LED chip delivers so much light for all purposes - both indoor and outdoor. Flashlight body made of...
  • Mode Arrangement: Hi > Mid >Lo > Strobe >SOS(With a slight press of the power button changes the operating mode.)
  • Waterproof & Non-Slip:Skid-proof design & waterproof design LED bulbs(not for diving), enough to adapt to most harsh environments.
  • Range: Sweeps bright light over the length of about two football fields ( 300 m) and reaches nearly 1000 ft. Fully zoomable from wide to narrow beam.
Bestseller No. 19
Super Bright 2000 Lumen 18650 Tactical Flashlight and 6PCS 3.7V High Capacity Rechargeable...
  • SUPER-BRIGHT: 2000 lumen (max) LED Flashlight,Ultra wide beam effortlessly illuminates a whole room or backyard.Adjustable focus with 5 modes: High,...
  • LONG-LASTING: Up to 6 hours (Medium-beam mode) of powerful, non-diminishing brightness from the included premium rechargeable High Capacity battery.
  • TOUGH & RELIABLE: IP65-rated water resistant and designed for use in heavy rain. Its durable aluminum body and shock-resistance endure rough handling.
  • High-Capacity Performance Lasting:This rechargeable High Capacity battery that can last up to 3~6 hours with a single charge.The battery is perfectly...
  • 12 months warranty and 30 days money back guarantee. Please rest assured to buy, no worries at all.Two flat head plugs or USB plugs are shipped...
SaleBestseller No. 20
WISSBLUE 18650 Battery Charger, LCD Screen Can Display Capacity, 2a Fast 18650 Charger, Suitable for...
  • 【WIDE COMPATIBILITY】: The Fast 18650 Charger Is Compatible With All 3.7v Lithium Batteries And 1.2v Nimh/Nicd Aa Aaa Batteries. Smooth And Durable...
  • 【SMART LCD DISPLAY】;Lcd4 18650 Charger Monitors Detailed Real Battery Condition, Time Per Charge/Charging Capacity, Battery Voltage, Charging...
  • 【SAFELY ADJUST CHARGING SPEED】: Switch Between Slow/Medium/Fast Charging As Needed, Shorten Charging Time By Up To 35%, Intelligent Circuit To...
  • 【18650 BATTERY CHARGING TIME】: 2.3 Hours Full Lithium Ion Panasonic Ncr18650b 3400mah, 3.5 Hours Full 21700 Battery 5000mah, 0.5 Hours Full...
  • 【UNIVERSAL CHARGER】: Universal Usb Interface, You Can Use Solar Charger, Mobile Power, Computer, Car Charger, Usb Wall Charger, Etc. To Charge...

Having trouble finding a great 4000mah 18650 battery ?

This problem is well understood by us because we have gone through the entire 4000mah 18650 battery research process ourselves, which is why we have put together a comprehensive list of the best 4000mah 18650 battery s available in the market today.

After hours of searching and using all the models on the market, we have found the best 4000mah 18650 battery for 2023. See our ranking below!

How Do You Buy The Best 4000mah 18650 Battery ?

Do you get stressed out thinking about shopping for a great 4000mah 18650 battery ? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching 4000mah 18650 battery , which is why we have assembled a comprehensive list of the greatest 4000mah 18650 battery available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 4000mah 18650 battery that you consider buying. Your questions might include the following:

  • Is it worth buying an 4000mah 18650 battery ?
  • What benefits are there with buying an 4000mah 18650 battery ?
  • What factors deserve consideration when shopping for an effective 4000mah 18650 battery ?
  • Why is it crucial to invest in any 4000mah 18650 battery , much less the best one?
  • Which 4000mah 18650 battery are good in the current market?
  • Where can you find information like this about 4000mah 18650 battery ?

We’re convinced that you likely have far more questions than just these regarding 4000mah 18650 battery , and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 4000mah 18650 battery , rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 4000mah 18650 battery . Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an 4000mah 18650 battery buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 4000mah 18650 battery currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 4000mah 18650 battery has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 4000mah 18650 battery ?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 4000mah 18650 battery .
  5. Customer Ratings: Number ratings grade 4000mah 18650 battery objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 4000mah 18650 battery .
  7. Product Quality: You don’t always get what you pay for with an 4000mah 18650 battery , sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 4000mah 18650 battery is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining 4000mah 18650 battery information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 4000mah 18650 battery is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: How dangerous are 18650 batteries?

A: – The battery will lose a charge on the shelf must faster than normal. … – The battery gets hot when charging or discharging, warmer than normal. – You have used the battery frequently over 2 to 3 years. – The battery can hold less than 80% of its original capacity. – Recharge time gets abnormally long. – If there is ANY cracking or deformation in the battery.

Q: What stores carry 18650 batteries?

A: 18650 Batteries | 18650 Chargers | 18650 Accessories | The 18650 Battery Store offers a wide selection of OEM 18650 Batteries and Chargers. Lithium ion 18650 cells are a great option for today’s high end electronics and while the up-front cost might be a little more than

Q: What is the voltage of a fully charged 18650 battery?

A: When an 18650 battery is charged and discharged, this is counted as one cycle. 18650 lithium-ion batteries are charged up to 4.2V and down to between 2V and 3V depending on the cell’s specification for cut-off voltage. To be safe, never discharge lower than 3.0V unless you know your cell’s specification.

Q: How many hours does a 18650 battery last?

A: Typical runtimes are often between 45 minutes and 250 hours or so, but there’s a lot of variation. Also, 2 hours of runtime might mean it’ll last someone about a month or three for example, if it’s not used too frequently.