Best 21700 Battery Charger In September 2026

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With the number of alternatives available on the market, getting the right one could sometimes be a difficult task.. That’s why our platform is dedicated to product testing and coming up with this list of top 10 Best 21700 Battery Charger. Having done thorough research on this topic, we hope that our list will help you find the one you need!

To help you in your search, we have completed this list of the Best 21700 Battery Charger.

Top Rated Best 21700 Battery Charger Of 2026

Rank	Product Name	Score
1	NITECORE UMS2 Intelligent USB Dual-Slot Quick Battery Charger for Li-Ion/Ni-MH/Ni-Cd/IMR 16340 14500 18650 Buy Now	9.7 Buy Now
2	Smart Rechargeable Battery Charger for Ni-MH Ni-Cd A AA AAA C SC F6 Buy Now	9.5 Buy Now
3	Fenix are-D1 USB Powered Smart Battery Charger for 21700/18650/16340 with EdisonBright BBX5 Battery Buy Now	9.1 Buy Now
4	Universal Battery Charger EASTSHINE S2 LCD Display Speedy Smart Charger for Rechargeable Batteries Buy Now	8.8 Buy Now
5	ALLMAYBE XTAR PB2S 18650 Battery Charger with XTAR QC3.0 18W Wall Charger USB Buy Now	8.6 Buy Now
6	DOTTMON LED 4-Slots Intelligent Universal Battery Charger for 3.6V/3.7V Li-ion 10440 14500 14650 Buy Now	8.3 Buy Now
7	Fenix are-A2 Smart Battery Charger for 21700/18650/16340 with EdisonBright BBX5 Battery Carry case Buy Now	8.1 Buy Now
8	USB C 21700 Battery Charger XTAR VC8 Type C 3A Fast 18650 Charger Buy Now	7.8 Buy Now
9	18650 Battery Charger,MiBOXER Smart Universal 4-Bay Automatic LCD Display,Fast Charging Rechargeable Li-ion LiFePO4 Buy Now	7.5 Buy Now
10	Speedy Battery Charger,Universal Smart Rechargeable Battery Charger for AA AAA C Li-ion IMR Buy Now	7.2 Buy Now

1. NITECORE UMS2 Intelligent USB Dual-Slot Quick Battery Charger for Li-Ion/Ni-MH/Ni-Cd/IMR 16340 14500

• Fast and efficient charging- reach a maximum total of 4000ma for two slots, 3000ma for one slot when pairing with a 9v qc2.0+ output usb power source. reach a maximum 1000ma charging current per slot when paring with a standard 5v usb source.
• Battery types & sizes - compatible with various battery types (li-ion/imr/lifep04/ni-cd/ni-mh) and common battery sizes including (18650, 16340,14500, rechargeable aa, aaa).
• Qc3.0 charging adapter included - charge your batteries quickly with the included lumentac qc 3.0 charging adapter
• Lcd display- reports key realtime information such as battery health, charging status and charging mode.
• Intelligent charging- automatically selects appropriate charging current and voltage to protect the batteries and prolong its lifespan

2. Smart Rechargeable Battery Charger for Ni-MH Ni-Cd A AA AAA C SC F6

• Ul certification: our product has been tested, got safety certificate and meets the applicable published standard. the ul mark is proof of product compliance to north american safety standards.
• What you get: bo4-pro smart charger, power cord, user manual, warranty card, 24 hours warm service, 60 days free refund, 2 years free replacement, lifetime maintenance. warm tips: this charger with no wall adaptor, you can use any dc 5v/2a adapter. (different input currents will affect the actual charging current. it is recommended to charge with 5v2a.)
• Intelligent charger: has four independent charging channels, it can charge four lithium batteries at the same time. users can choose different charging current to meet the needs of slow charge or fast charge. and the charger will display the status of each rechargeable battery when charging.
• Strong practicality: can charge for different types of dc 3.7v cylindrical lithium batteries 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 22650, 20700, 21700, 22700, 25500, 26650, 26700 and 1.2v nimh/nicd aa, aaa, a, c, sc, f6 rechargeable batteries.
• Safety assurance: 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.

3. Fenix are-D1 USB Powered Smart Battery Charger for 21700/18650/16340 with EdisonBright BBX5 Battery

• Usb powered battery charger
• Compatible with battery types 2665021700 1865016340 1450010440 aa aaa c
• Single charging bay
• Batteries not included
• Bundle includes edisonbright bbx5 battery carry case

4. Universal Battery Charger EASTSHINE S2 LCD Display Speedy Smart Charger for Rechargeable Batteries

• 2. universal charger for all types of: nimh nicd a double a triple a aa aaa aaaa c sc battery, li-ion lithium-ion lifepo4 imr inr icr 26650 25500 22650 18650 18490 18500 18350 17670 16340 rcr123a 14500 10440 rechargeable cr123 cr123a li ion batteries.
• 5. what you get: s2 2 slot smart recharger, dc vehicles / ac wall adapter, happy card with 24 hours warm service, 30 days freerefund, 2 years free replacement, lifetime maintenance.
• 4. 2 slots smart chargers: automatically detect battery status, select charge mode, cut off power at full or overtime, and lcd display each cells voltage and type, charging current and time.
• 1. safety first: s2 charger's compliant standard--ul cul tuv gs pse fcc ce c-tickcb rohs, and with fire retardant materials, intelligent circuits and worldwide warranty, please confirm your battery is genuine / not damaged / quality / rechargeable before charging.
• 3. 2 bay speedy rechargers for: eneloop 2000mah aa 2-hour, nickel amazonbasics 800mah aaa 0.8-hour, 3.7v button top lithium ion 3400mah panasonic ncr18650b 3.5-hour, 3.7 volt flat top liion 2500mah lg he2 2.5-hour @ 1a fast charge current.

5. ALLMAYBE XTAR PB2S 18650 Battery Charger with XTAR QC3.0 18W Wall Charger USB

• 1.portable charger with power bank function, charge protected 18650 and unprotected 18650 18700 20700 21700 batteries, with your own batteries, you can even diy the capacity of the power bank up to 10000mah+.
• 5.package list: pb2s charger(not included batteries), qc3.0 wall chargerblack or white color), usb c cable, manual,extra battery sleeve, sticker ,
• 4.pb2s comes with a magnetic cover, dust-proof and drop-proofbuilt-in ribbon, easy for removing the batteriesrubber-painted material, skin-friendly touch.precise numerical tube displays real-time charging/discharging current and voltage, and battery capacity percentage, and supports a one-handed button to check each batterys charging voltage and current
• 2. max 3a fast charging, support the most popular qc3.0+pd3.0 dual-protocol fast charging, package come with xtar qc3.0 wall charger. precise numerical tube displays real-time charging/discharging current and voltage, and battery capacity percentage, and supports a one-handed button to check each batterys charging voltage and current
• 3. type-c and usb-a ports can both be used for output and charge two external devices at the same time, more convenient for outdoor usage. (*pb2s can also charge low-current devices such as bluetooth headphones and usb lights.)

6. DOTTMON LED 4-Slots Intelligent Universal Battery Charger for 3.6V/3.7V Li-ion 10440 14500 14650

• The product applies to 3.6v/3.7v li-ion: 10440 14500 14650 16340 16650 17650 17670 18350 18490 18500 18650 18700 22650 20700 21700(only for flat top) 22700 25500 26650 26700 (not for aa or aaa batteries).
• Smart charger: automatically detects battery capacity, select charging current. automatically adapts to usb input power.
• Usb charging: common micro-usb input makes it possible to be powered up by any usb 5v output, like wall chargers, power banks, car chargers etc.
• Portable and compact: the input usb charging cable is integrated with the charger, easy to carry and charge. 30 days free refund, 2 years free replacement, lifetime maintenance.
• Fully charge indicate: the led indicators will turn green when corresponding batteries are fully recharged.

7. Fenix are-A2 Smart Battery Charger for 21700/18650/16340 with EdisonBright BBX5 Battery Carry case

• Compatible batteries 10440 14500 16340 18650 21700 26650 ni-mh / nicd: aa, aaa and c
• Multiple levels of protection short-circuit protection over-current protection, over-voltage protection, reverse polarity protection,
• Charge 1 or 2 batteries at the same time
• Bundle includes edisonbright bbx5 battery carry case
• Lcd screen display

8. USB C 21700 Battery Charger XTAR VC8 Type C 3A Fast 18650 Charger

• The charger tests batteries real capacity by charging-discharging-charging the batteries
• 18650 smart charger, charge max 8pcs 21700 batteries simultaneously, can charge rechargeable 18650 21700 and 1.2v ni-mh aa aaa c batteries at the same time.
• Built-in high-precision mcu, over-current, over-charge, over-voltage, and short-circuit protection, combined with xtar's soft-start function, makes the precision of end-of-charge voltage up to 1%
• Detect the battery type,select the most suitable charging method
• Type-c port, max 3a for a single slot,va lcd screen shows batteries real-time charging status

9. 18650 Battery Charger,MiBOXER Smart Universal 4-Bay Automatic LCD Display,Fast Charging Rechargeable

• Safety protection,3 year warrantymiboxer c4 chargeable battery charger is made of pc fire retardant material,with excellent heat dissipation and electronic circuit design.when battery is reversed or short-circuited,it will show error symbol.after battery fully charged, it just stopped charging automatically.if the battery is over discharged, our smart charger can even...
• Package battery fast charger(without battery), power cord, user manual. our smart battery chargers come with 3 years warranty.any quality problems or questions,just feel free to contact us by email ,protected
• Muti-functional lcd displaythis 18650 and aaa/aa battery charger with large screen can show voltage,current,charging time,mode,battery type,internal resistance and battery capacity data,easily to understand the charging datum. the lcd back-light will become dark after 1 minutes without any operation. its 4th bay also has discharge function.
• Fast chargeing, easy to usethis intelligent battery charger can charge 4 rechargeable different type of chargeable batteries simultaneously. you can set the single-channel charging current up to 1.5a max. automatically/manually select the optimum charge current. supports 4-channel simultaneous independent charging without affecting. please noticed that it can auto det...
• Universal battery chargerthe universal battery charger is fully compatible with: li-ion / imr / inr / icr / lifepo4(3.6v): 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430,14500, 14650, 16500,16340(rcr123), 16650, 17350, 17500, 17650, 17670, 18350, 18490,18500,18650,18700,20700,21700,22500, 22650,25500, 26500, 26650, ni-mh / ni-cd(1.4...

10. Speedy Battery Charger,Universal Smart Rechargeable Battery Charger for AA AAA C Li-ion IMR

• Safety assurance: high precision digital calibration, compliant standard--ul cul tuv gs pse fcc ce c-tickcb rohs including safe and fire prevention pc+abs material,heat-resisting, low temperature resistance and scratch.resistance, emc electromagnetic compatibility, 8 hours full load aging. power board isolated from other circuit boards totally to ensure safety.
• Fast and intelligently charging: 2 different charge current options to choose from 0.5a to 1a. 2 slots work independently, it will stop once completing charge intelligently.really smart and fast battery charger for you.
• Upgraded lcd display: 2 buttons can control each slot separately and each battery parameter such as voltage (v), current (ma), schedule( percentage) and battery type can be viewed independently by pressing the corresponding button.
• Universal charger: compatible with:li-ion imr inr icr 21700 26650 25500 22650 18650 18490 18500 18350 17670 14500 10440 batteries, ni-mh ni-cd aa aaa aaaa c sc batteries.note: because 21700 battery has many modified sizes. be sure to measure the size of your battery. avoid wasting your precious time. not suitable for batteries longer than 73.5 mm
• Package includes: 1 x 18650 battery charger , 1 x usb cable. if you have any problems please feel free to contact with us.