Updated: 16 Feb 2025

21700 cell testeds

Updated: 16 Feb 2025

#1

Best Choice
MLGBDC 8 PCS 21700 Rechargeable Battery Flat Top 3.7V Li-ion Cell 5000mAh Large Capacity for Headlamp, Flashlight, Toys

9.8

MLGBDC

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Main highlights

【Product size】70*21*21mm (2.76*0.83*0.83 inch),21700 3.7V batteries.

【Multi-Application】21700 5000mAh Rechargeable Battery for headlamps, flashlights, doorbells,alarm clock,toys and other necessary devices

21700-5000mAh flat top rechargeable battery with charger , Please pay attention to the size before you buy.
#2

Value for Money
IMREN 18650 Capacity Tester,18650 Battery Charger with Discharge & Testing Function, 21700 Battery Charger with LCD Screen Display Capacity Suit for 18650 21700 20700 1.2V Ni-MH/Ni-CD LiFePO4 Battery

9.7

Imren

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Main highlights

【C4 Channel 18650 Battery Tester】-Put the 18650 battery into the charger's C4 channel,then Press SLOT and MODE both keys for 2 seconds till flashes.After 5 seconds,it will automatically enter Battery Capacity Analysis Mode.In this mode,the battery is first fully charged,and then discharged at a constant current of 500mAh.After a cycle process of charging and discharging, the capacity of the corresponding battery is displayed on the screen. (only for the C4 channel 18650 battery tester)

【Automatic LCD Display】- This is a smart 18650 battery charger with LCD Display, Automatically adjust and choose the best charging current for different batteries to maximize battery life, also could automatically detect Li-ion and Ni-MH batteries at same time or separately. Comes with a car adapter, easily charge your 18650 batteries in your big truck

【18650 Battery Charger】- the Battery Charger suit for IMR / Li-ion(4.2V / 4.35V) / 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 / Cd(1.48V) A AA AAA AAAA C SC.(Support car charge, Includes Car Adapter)
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#3
4-Wire Battery Resistance Capacity Test for Coil Cell 18650 26650 21700 Bench Battery Holder Battery Clamp Battery Capacity Tester AA AAA Batteries A+/A- ;V+/V- Interfaces 18650 Battery Holder

9.6

HOBBYFLY

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Main highlights

The battery tester clamp is 4 wires tester jig. It can make your test and measurement more precise.

Nominal current 5A,Maximum current: 10A

It can be used much easily that you only loose the screw and tight it by hand.And the positive and negative role can be shorted to calibrate your device to zero.
#4
Bettomshin 50Pcs 21700 Lithium Battery Holder, Lithium Cell Spacer Triple Battery Holder Bracket Battery Pack Bracket for DIY Fixed Battery 21.7mm Hole Dia

9.5

Bettomshin

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Main highlights

【Parameter】Series Mode: Trible 21700 Battery Holder Cell Spacer; For: 21700 Lithium Battery; Hole Spacing: 23mm/0.9inch; Hole Dia: 21.7mm/0.85inch.

【Function】Battery holder 21170 belong to necessary support of high-end battery combination, can withstand high drop, high strength support, easy to heat dissipation, convenient combination, fixed specifications, and free combination.

【Aapplication】With professional 21170 battery holder to replace the traditional general adhesive, which would brings convenient combination and more firm connection, as well as brings convenient maintenance of the battery.its the best choice of the battery combination.
#5
Bestol 100pcs 2x Cell/3xCell 21700 Battery Holder Bracket Cell Safety Anti Vibration Plastic Brackets For 21700 Batteries (2X21700 CELL)

9.3

Bestol

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Main highlights

Can be spliced arbitrarily, aperture 21.2mm, spacing 23.2mm

21700 2x/3x Battery Holder Bracket Cell Safety Anti Vibration Plastic Brackets For 21700 Batteries

100 Pcs 2x 21700/3x21700 Battery Holder Bracket
#6
LiitoKala Lii-M4S 18650 Battery Charger Smart Universal Charger LCD Display for 26700 18650 26650 21700 AA Touch Button LCD Display Test The Battery Capacity

9.2

LiitoKala

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Main highlights

【Universal Battery Charger】4 bay battery charger is fully compatible with 3.7V Rechargeable Batteries：18650,26650,22650,20700,18350,18490,18500,18700,17335,17670,17500,16340 ,14500, 10440 , 14650, 25500,32650, 1.2V NiMH/Cd: AA, AAA，SC, C Size.(It cannot charge all 1.5V batteries, including AA AAA batteries)

【Touch Button 4-Bay 18650 Battery Charger】Long press the MODE touch point to switch between these four modes: first tap the 1-2 or 3-4 touch point to select the channel, then long press MODE to change the original mode, tap MODE to select the desired mode, press CURRENT The touch point changes the current size, and it enters the working state without any action for 8 seconds after selection, which is easy to use. reference values.

【LCD DISPLAY】: LCD display to monitor the four slots information. The charger can change independent charging or different current selection according to the corresponding touch point function, as well as mixed charging of different batteries, which is easy to operate; in the working state, you can tap (1-2, 3-4) touch points to view the corresponding channel current (mA) /Capacity(mAh)/Voltage(V)/Time(h) and other data reference values.Each battery parameter such as voltage (V), current (mA), time (h) can be showed independently by pressing the 1-2/3-4button.
#7
Hlsicnalm 4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder for 18650 26650 21700 AAA

9.0

Hlsicnalm

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Main highlights

and high quality

Type: Battery Capacity Tester

Specification:
#8
QUQUTWO 4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder for 18650 26650 21700 AAA

8.9

QUQUTWO

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Main highlights

Type: Battery Capacity Tester

Nominal current 5A

Material: PCB + Metal + Plastic
#9
4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder for 18650 26650 21700 AAA Cell Capacity Test My02 19 Dropship

8.6

Generic

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Main highlights

4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder For 18650 26650 21700 AAA Cell Capacity Test My02 19 Dropship
#10
SUIDI 21700 cell spacer 60pcs 1x2 Cell Spacer 21700 nickel strip Plastic Holder Bracket for 21700 batteries pack spot welder welding

8.5

SUIDI

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Main highlights

Plastic material, freely spliced

21700 holder,Spacing distance 23.4mm, diameter 21.7mm, Suit for SUIDI 21700 2P pure nickel strip 0.15(0.2)x32x23.4mm

21700 cell spacer 1x2 21700 Li battery cell packs holder,

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21700 cell testeds

MLGBDC 8 PCS 21700 Rechargeable Battery Flat Top 3.7V Li-ion Cell 5000mAh Large Capacity for Headlamp, Flashlight, Toys

9.8

Main highlights

IMREN 18650 Capacity Tester,18650 Battery Charger with Discharge & Testing Function, 21700 Battery Charger with LCD Screen Display Capacity Suit for 18650 21700 20700 1.2V Ni-MH/Ni-CD LiFePO4 Battery

9.7

Main highlights

4-Wire Battery Resistance Capacity Test for Coil Cell 18650 26650 21700 Bench Battery Holder Battery Clamp Battery Capacity Tester AA AAA Batteries A+/A- ;V+/V- Interfaces 18650 Battery Holder

9.6

Main highlights

Bettomshin 50Pcs 21700 Lithium Battery Holder, Lithium Cell Spacer Triple Battery Holder Bracket Battery Pack Bracket for DIY Fixed Battery 21.7mm Hole Dia

9.5

Main highlights

Bestol 100pcs 2x Cell/3xCell 21700 Battery Holder Bracket Cell Safety Anti Vibration Plastic Brackets For 21700 Batteries (2X21700 CELL)

9.3

Main highlights

LiitoKala Lii-M4S 18650 Battery Charger Smart Universal Charger LCD Display for 26700 18650 26650 21700 AA Touch Button LCD Display Test The Battery Capacity

9.2

Main highlights

Hlsicnalm 4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder for 18650 26650 21700 AAA

9.0

Main highlights

QUQUTWO 4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder for 18650 26650 21700 AAA

8.9

Main highlights

4 Wire Battery Resistance Capacity Test Testing Stand Cell Holder for 18650 26650 21700 AAA Cell Capacity Test My02 19 Dropship

8.6

Main highlights

SUIDI 21700 cell spacer 60pcs 1x2 Cell Spacer 21700 nickel strip Plastic Holder Bracket for 21700 batteries pack spot welder welding

8.5

Main highlights

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