Table Of Contents

Cordless-Drill-Torque-Chart

As a DIYer myself I have experienced that “torque plays an immense role in a cordless drill. It is one of the most powerful characteristics of the drill along with speed. And regarding this drill torque, there are many things I am gonna discuss with you.

Like why torque is important in a cordless drill as I have said above. And how does it impact your drill?

Do torque and speed have any relation? Why do experts, and DIYers always prefer cordless drills with higher torque? Which drill setting can help you achieve the maximum torque?

And finally, there is something that I have prepared for you in the form of an epic cordless drill torque chart. Of course, that was a real challenge to face. But, it finally paid off…

So, let’s begin with Torque:

What is Torque in a Drill

What-Is-Torque-In-A-Drill
What Is Torque In A Drill

The torque is the measurable amount of twisting force that the drill applies in an inch per pound. Which is represented as In-lbs and it is used for almost every drill. For a cordless drill, the torque is the best factor for measuring a drill’s power.

When it comes to torque and speed, the corded drills are more powerful than the cordless ones. But, that doesn’t mean the cordless drills get the short end of the stick in this cordless vs corded conundrum. They are pretty famous for their ease of use and extreme portability.

While on the other hand, the cordless drills torque adjustment system with variable speeds, clutch numbering, and 3-mode drilling gives you an edge in doing different tasks with a single tool.

Why is Torque Important

Every DIYer, homeowner, and industry expert recommends a cordless or cordless hammer drill with high torque. Because, it makes your work precision accurate, swift, and efficient. Which means professional work.

Plus, higher penetrating power helps you drill through tougher materials just like slicing butter with a knife. Whether it’s:

Drilling Hard Materials

  • Hard Wood
  • Wall/Concrete
  • Iron
  • Steel
  • Aluminum
  • Or Other Alloys

The In-lbs, Nm And UWO Power

In-lbs.-Nm-UWO
In-lbs. Nm & UWO

Now, torque apart from In-lbs is also measured in “Nm” as well as UWO. It depends on the manufacturer/brand and which system they’re gonna use for their drills.

what does nm mean in torque?

The “Nm” is known as the “Newton Meter” which is the force behind the rotation of an object. This same unit is also used to measure the torque of a drill. In fact, after “In-lbs” the “Nm” is the most used term for torque in cordless drills.

Unit Watts Out (UWO Power)

While UWO is known as “Unit Watts Out”. This extension is mostly used by Black & Decker as well as by DeWalt drills as you’ll see in the cordless drill torque chart.

In-lbs, Nm, & UWO Problem

Thus, due to all these system usages by different brands I had to go through a teeth-grinding issue during my search on high torque drills.

As it becomes problematic when you’re looking at 2 or 3 drills for comparison one has a torque label with In-lbs, one is with UWO and the other is in Nm.

In this way, you cannot determine the power of these different drills which have different measuring systems just for torque.

The Tool Miner Converters

So, here I want to make it crystal clear for you. That cordless drill with a higher number always means high torque. So, no matter which system brands or manufacturers use for the evaluation of their drills. Whether it’s In-lbs, UWO, or Nm.

In-lbs-to-Nm
In lbs to Nm

Nm To In-lbs Converter

In fact, “Nm” can be converted into “In-lbs”. You can do that by using our nm to the in-lbs converter. Our tool automatically converts the drills given newton meter value into inch-pounds.

The opposite is also possible. For those people who check their drills torque in Nm. We also have the in-lbs to nm converter. The tool will automatically convert your drill’s torque from inch pounds to newton meter.

UWO To In-lbs Conversion

But, sadly there is no system for converting UWO into Torque. According to ToolGuyd, the UWO cannot be converted into torque. Because the UWO collectively gives a full picture of the power and performance of the drill than the torque alone.

Torque Vs RPM – The Relation

Torque-Vs-RPM
Torque Vs RPM

Another aspect factor that goes side by side with torque is speed and this speed is denoted by RPM. The RPM is defined as “Revolutions Per Minute”. Thus, the total number of turns completed by a drill within one minute is called RPM. 

Both torque and speed (RPM) are inversely related to each other. If one increases the other has to be decreased.

RPM & Torque Setting

The cordless drills have a separate setting for adjusting torque and RPM. This setting is known as the speed setting.

Most drills have 2-speed settings but there are other cordless drills with 3-speed settings. Such as in the case of DeWalt DCD996P2 and DCD991P2 hammer drill.

The 2-speed setting trigger gives high torque at setting no 1. Setting no 2 is used for high speed. For example, in the Makita XT269M 18V LXT combo kit. The hammer drill gives 0 to 500 RPM at setting 1 while on setting no 2 it gives 0 to 2,000 RPM.

Cordless Drill Torque Settings

Now, to attain maximum torque you have to understand the numbers and symbols on the drill and what do they mean?

The numbers are designed with a rotational clutch. This clutch rotates and helps you adjust the drill torque on your cordless drill.

There is also the adjustable mode system that comes with 3 gears. These gears are represented with 3 symbols which are:

Cordless Drill Symbols

  • Drill: Use for drilling into wood, plastic, or metal
  • Driver: Used for driving screws into the material
  • Hammer: This mode is used for drilling into stone, concrete, or masonry

Thus, this whole intelligent system of numbers and symbols is known as drill torque setting. By adjusting these settings you can adjust the torque according to your work or the material. Whether you’re drilling, fastening up screws, or doing some hammer action.

Along with torque and other aspects, these high torque drills are also versatile when it comes to accessories. Such as the charging, battery Voltage system, and types of drill bits the same drill can use.

A single battery of the same brand works for every tool of that brand given that the voltage is the same i.e., 12, 18, 20 Volts, etc.

As for the drills, a 3/8 inch drill works with both 3/8-inch and 1/2-inch drill bit sizes. But, before using these drill bits do know the difference between 3/8-inch and 1/2-inch drills.

That’s the role of the torque in a cordless drill which I told you at the beginning of our discussion. The best cordless drill with high torque stays with you as a trusty right-hand man to help you overcome different ordeals.

And believe me, through all my years with these tools I have understood that you won’t find the MR. Perfect in the market. Every manufacturer has to select and choose certain aspects that precede others while they lack in some in which other brands exceed.

Scraping Through 180+ Cordless Drills

I had to go through a great ordeal just to get all those best high torque drills. I scraped through at least 180+ cordless drills.

Searching through these buddies and putting them on this cordless drill torque chart took a phenomenal time.

15 Days | 6 Hrs / Day | Gals. of Tea
180+ Cordless Drills

But, it finally paid off.

But, remember it’s not the perfect list. They are machines and they have their set of problems and limitations as well. Just like we have.

The Epic Cordless Drill Torque Chart

The cordless drill torque chart briefly explains each aspect of the drill about its power, performance, style, physical attributes, important features, and company support.

Cordless-Drill-Torque-Chart
Cordless Drill Torque Chart

Cordless Drill Torque Comparison

Next, I arranged all the specs and drills in a comparison table. With comparison, it becomes easy for you to decide on which drill suits your personality and the projects you do.

Brand Milwaukee Makita Skil DeWalt DeWalt Ridgid Bosch Ryobi Metabo HPT Makita
Model 2803-22 XPH07Z HD529502 DCD996P2 DCD991P2 R9652 GXL18V-224B25 P1813 DV18DBFL2T XT269M
Torque 1,200 In-lbs 1,090 In-lbs 850 In-lbs 820 UWO 820 UWO 780 In-lbs 755 In-lbs 750 In-lbs 620 In-lbs 530 In-lbs
Max Speed [RPM] 2,000 2,100 2,000 2,000 2,000 1,600 2,100 1,800 2,000 2,000
Variable Speed 2 2 2 3 3 2 2 2 2 2
Working Modes Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer Drill, Driver, Hammer
Voltage 18v 18v 20v 20v MAX 20v MAX 18v 18v 18v 18v + 36v 18v
Motor Type Brushless BL Brushless Brushless Brushless Brushless Brushed EC Brushless Brushless Brushless BL Brushless
Chuck Size 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch 1/2 Inch
Chuck Type Keyless Keyless Keyless Keyless Keyless Keyless Keyless Keyless Keyless Keyless
Body Design Lightweight Reinforced Lightweight Lightweight Lightweight Lightweight Lightweight Lightweight Lightweight Lightweight
Grip Type Ergonomic Ergonomic Ergonomic Ergonomic Ergonomic Textured Ergonomic Overmold Ergonomic Ergonomic
Weight [lbs.] 5.84 10 6.62 10 10 18.25 13.4 7.7 3.7 4.2
Battery Included 2 2 1 2 2 2 2 1 2 2
Battery Type Red Li-Ion LXT Li-Ion PWRCore Li-Ion XR Li-Ion XR Li-Ion Hyper Li-Ion Next-Gen Li-Ion 21700 Cell Technology Li-Ion Li-Ion LXT Li-Ion
Battery Amp 5.0Ah 5.0Ah 5.0Ah 5.0Ah 5.0Ah 4.0Ah 4.0Ah 4.0Ah 3.0 & 5.0Ah 4.0Ah
Charge Time 60 Mint. 40 Mint. 60 Mint. 90 Mint. 90 Mint. No Mention No Mention 30 Mint. 30 Mint. 40 Mint.
Battery Indicator Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Bluetooth No Mention No Mention No Mention No Mention No Mention No Mention Yes No Mention No Mention No Mention
Work Light LED Dual LED 3-Mode 3-Mode LED LED LED LED 3-Stage
Drill/Driver Kit Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Side Handle Yes Yes Yes Yes Yes Yes Yes Yes Yes No
Belt Hook Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Warranty 5 Years 3 Years 5 Years 3 Years 3 Years No 1 Year Separate Buy Lifetime [Li-ion/Tool Body] 1 Years
Our Rating 9.7 / 10 9.5 / 10 9.4 / 10 9.3 / 10 9.3 / 10 8.8 / 10 9.2 / 10 8.9 / 10 9.0 / 10 9.1 / 10

Best High Torque Drills 2022

Here I have arranged the drills based on their torque rating to help you get a better look at them. Plus, I have included the single tool variations that I could find for each cordless drill/driver kit as well.

Here is a quick list of the best high torque drills in 2022.

1. Milwaukee 2803-22 – 1,200 in-lbs
2. Makita XPH07Z – 1,090 in-lbs
3. SKIL HD529502 – 850 in-lbs
4. DEWALT DCD996P2 – 820 UWO
5. DEWALT DCD991P2 – 820 UWO
6. Ridgid GEN5X R9652 – 780 in-lbs
7. Bosch GXL18V-224B25 – 755 in-lbs
8. Ryobi ONE+ P1813 – 750 in-lbs
9. Metabo HPT DV18DBFL2T – 620 in-lbs
10. Makita XT269M – 530 in-lbs

MILWAUKEE 2803-22 Electric Tools Drill Driver Kit

Milwaukee 2803-22 Specifications

Brand Milwaukee
Model 2803-22
Torque 1,200 In-lbs
Max Speed [RPM] 2,000
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Compact
Grip Type Ergonomic
Weight 5.84 lbs
Battery Included 2
Battery Type Red Lithium-Ion
Battery Amp 5.0Ah
Charge Time 60 Minutes
Battery Indicator Yes
Work Light LED
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty 5 Years
Our Rating 9.7 / 10

Makita XPH07Z 18V LXT BL Hammer Drill [Tool Only]

Makita XPH07Z Specifications

Brand Makita
Model XPH07Z
Torque 1,090 In-lbs
Max Speed [RPM] 2,100
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type BL Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Reinforced Composite
Grip Type Ergonomic
Weight 10 lbs
Battery Included 2
Battery Type LXT Lithium-Ion
Battery Amp 5.0Ah
Charge Time 40 Minutes
Battery Indicator Yes
Work Light Dual LED System
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty 3 Years
Our Rating 9.5 / 10

SKIL HD529502 PWRCore 20V Brushless Heavy Duty Hammer Drill With 5.0Ah Lithium Battery & PWRJump Charger

SKIL HD529502 Specifications

Brand SKIL
Model HD529502
Torque 850 In-lbs
Max Speed [RPM] 2,000
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 20v
Motor Type Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless Metal Ratcheting
Body Design Lightweight Compact
Grip Type Ergonomic
Weight 6.62 lbs
Battery Included 1
Battery Type PWRCore Lithium-Ion
Battery Amp 5.0Ah
Charge Time 60 Minutes
Battery Indicator Yes
Work Light LED
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty 5 Years
Our Rating 9.4 / 10

DEWALT DCD996P2 20V MAX XR Hammer Drill Kit With 3-Speed Brushless Motor

DeWalt DCD996P2 Specifications

Brand DeWalt
Model DCD996P2
Torque 820 UWO
Max Speed [RPM] 2,000
Variable Speed 3-Speed
Working Modes Drilling, Driving, Hammer
Voltage 20v MAX
Motor Type Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Compact
Grip Type Ergonomic
Weight 10 lbs
Battery Included 2
Battery Type XR Lithium-Ion
Battery Amp 5.0Ah
Charge Time 90 Minutes
Battery Indicator Yes
Work Light 3-Mode LED
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty 3 Years
Our Rating 9.3 / 10

DEWALT DCD991P2 cordless drill With 20V MAX XR Lithium-Ion 3-Speed Brushless Kit

DeWalt DCD991P2 Specifications

Brand DeWalt
Model DCD991P2
Torque 820 UWO
Max Speed [RPM] 2,000
Variable Speed 3-Speed
Working Modes Drilling, Driving, Hammer
Voltage 20v MAX
Motor Type Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Compact
Grip Type Ergonomic
Weight 10 lbs
Battery Included 2
Battery Type XR Lithium-Ion
Battery Amp 5.0Ah
Charge Time 90 Minutes Or Less
Battery Indicator Yes
Work Light 3-Mode LED
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty 3 Years
Our Rating 9.3 / 10

Ridgid GEN5X R9652 18V Tool Combo Kit (5 Piece)

Ridgid GEN5X R9652 Specifications

Brand Ridgid
Model Ridgid Combo Kit R9652 | Ridgid Drill R8611503
Torque 780 In-Lbs. [Drill]
Max Speed [RPM] 1,600 [Drill]
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type Brushed
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Compact
Grip Type Ergonomic Textured Grip
Weight Drill 4.27 lbs | Entire Kit 18.25 lbs
Battery Included 2
Battery Type Hyper Lithium-Ion
Battery Amp 4.0Ah
Charge Time Not Mentioned
Battery Indicator Yes
Work Light LED
Drill/Driver Kit Yes, With R86035 Impact Driver, R8652 Circular Saw, Circular Saw Blade, R8642 Reciprocating Saw, Reciprocating Saw Blade, 2 R840087 4.0 Ah Batteries, R840095 Charger, R8693 LED Flashlight, 2 Drill Bits, 3 Belt Hooks, Auxiliary Handle, Blade Wrench, Operator’s Manuals, & Bag
Side Handle Yes
Belt Hook Yes
Warranty No
Our Rating 8.8 / 10

Bosch brushless combo kit With 18V Cordless Hammer Drill & Impact Driver | GXL18V-224B25

Bosch GXL18V-224B25 Specifications

Brand Bosch
Model GXL18V-224B25
Torque 755 In-lbs
Max Speed [RPM] 2,100
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type EC Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Compact
Grip Type Ergonomic
Weight 13.4 lbs
Battery Included 2
Battery Type Next-Gen Li-Ion 21700 Cell Technology
Battery Amp 4.0Ah
Battery Indicator Yes
Bluetooth Connectivity Yes, With Application Connect
Work Light LED
Drill/Driver Kit Yes, With Impact Driver
Side Handle Yes
Belt Hook Yes
Warranty 1 Years
Our Rating 9.2 / 10

Ryobi ONE+ P1813 18V Lithium-Ion Cordless Hammer Drill Tool Kit With Battery Charger & Bag

Ryobi ONE+ P1813 Specifications

Brand Ryobi
Model P1813
Torque 750 In-lbs
Max Speed [RPM] 1,800
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Compact
Grip Type Overmold With Microtexture
Weight 7.7 lbs
Battery Included 1
Battery Type Lithium-Ion
Battery Amp 4.0Ah
Charge Time 60 Minutes
Battery Indicator 30 Minutes
Work Light LED
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty 2 Years Purchased As A Separate Item
Our Rating 8.9 / 10

Metabo HPT 18V Cordless Hammer Drill DV18DBFL2T

Metabo HPT DV18DBFL2T Specifications

Brand Metabo HPT
Model DV18DBFL2T
Torque 620 In-lbs
Max Speed [RPM] 3,800
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless Metal
Body Design Lightweight Compact
Grip Type Ergonomic
Weight 3.7 lbs
Battery Included 1st With 3.0Ah | 2nd MultiVolt 5.0Ah
Battery Type Lithium-Ion
Battery Amp 3.0Ah | 5.0Ah
Charge Time 30 Minutes
Battery Indicator Yes
Work Light LED
Drill/Driver Kit Yes
Side Handle Yes
Belt Hook Yes
Warranty Lifetime Lithium Ion & Tool Body Warranty
Our Rating 9.0 / 10

Makita XT269M 18V LXT Lithium-Ion Brushless Cordless 2-Pc. Combo Kit (4.0Ah)

Makita XT269M Specifications

Brand Makita
Model XT269M
Torque 530 In-lbs
Max Speed [RPM] 2,000
Variable Speed 2-Speed
Working Modes Drilling, Driving, Hammer
Voltage 18v
Motor Type BL Brushless
Chuck Size 1/2 Inch
Chuck Type Keyless
Body Design Lightweight Compact
Grip Type Ergonomic
Weight 4.2 lbs
Battery Included 2
Battery Type LXT Lithium-Ion
Battery Amp 4.0Ah
Charge Time 40 Minutes
Battery Indicator Yes
Work Light 3-Stage LED
Drill/Driver Kit Yes With Impact Driver
Side Handle No
Belt Hook Yes
Warranty 1-Year Limited Warranty
Our Rating 9.1 / 10

What To Do Next?

I say that you should also share this epic cordless drill torque chart with your DIYer mates and woodworking friends. So, they can avoid the above problems. Plus, hassle like going through huge archives.

It’s a bit difficult task to look for cordless drills with high torque in the crowded market. Especially for DIYers, woodworking folks, home, and garage owners like you, and us who have hands filled with projects.

Cordless Drill Torque FAQs

Q: What is a High Torque Drill?

Ans: High torque drills are also known as rotary hammer drills. These drills are specifically designed to produce an immense amount of torque. This magnanimous power allows them to drill through tougher materials like concrete in masonry work. Pulling out hard tasks with ease. Such as paint and plaster mixing or boring holes through thick metal and wood surfaces.

Q: What Are the Best High Torque Cordless Drill?

Ans: Below are the best high torque cordless drills:
1. Milwaukee 2803-22 – 1,200 in-lbs
2. Makita XPH07Z – 1,090 in-lbs
3. SKIL HD529502 – 850 in-lbs
4. DEWALT DCD996P2 – 820 UWO
5. DEWALT DCD991P2 – 820 UWO
6. Ridgid GEN5X R9652 – 780 in-lbs
7. Bosch GXL18V-224B25 – 755 in-lbs
8. Ryobi ONE+ P1813 – 750 in-lbs
9. Metabo HPT DV18DBFL2T – 620 in-lbs
10. Makita XT269M – 530 in-lbs

Q: How much torque does a Dewalt 20v drill have?

Ans: We have two DeWalt 20v Max XR drills in our cordless drill torque chart. 1st is the DEWALT DCD996P2 and 2nd is the DEWALT DCD991P2. Both have a high torque of 820 UWO. Which means Units Watts Out.

Q: What is the major difference between a high speed and a high torque drill?

Ans: High Speed is also referred to as RPM. Both Torque and RPM are inversely related to each other. Most drills have 2-speed settings while there are drills just like DeWalt 20v with 3-speed settings. The 1st mode gives torque as much as it can while the RPM is dropped. This mode is usually used for tougher jobs like drilling. While 2nd mode delivers higher RPM but with low torque. This mode is most suited for driving screws.

Q: How much torque does a cordless drill have?

Ans: Different cordless drills have different torque ranges depending on the brand and their type. In our cordless drill torque chart, the Makita XT269M has a lower torque of 530 in-lbs while the Milwaukee 2803-22 has the highest torque of 1,200 in-lbs.

Q: What is Bosch brushless motor with EC Technology?

Ans: Bosch “EC” is an “Electronically Commutated” motor that keeps the tool lightweight and compact. Plus, delivers higher performance with 30 to 40% more efficiency in work. These special motors balance out the weight to power ratio of the cordless drill and at the same time increase the lifespan compared to Bosch tools with conventional motors.

Q: What is Ridgid hyper lithium ion?

Ans: You have seen this term with the Ridgid combo kit in the “Battery Type” section. The Ridgid company has introduced Hyper Lithium-Ion Technology for their new line of tool batteries. This technology grants “TPE” also known as “Triple Protection Electronics” which protects batteries from overheating, overcharging, and overloading.

Q: What is Milwaukee red lithium Battery (Red li-ion)?

Ans: Redlithium or Red Li-Ion is Milwaukee’s latest M18 (18v) lithium-ion battery. The red lithium technology gives more power with 20% higher torque and speed. The durability has also been enhanced which gives 50% more recharge cycle and 40% longer run-time. Increased resistance to cold weather with 20% cooler operation down to 0ºF to -18ºC. Plus, comes with fade-free power with no memory effect.

Q: What does Makita BL mean?

Ans: As for Makita XPH07Z and XT269M, there is the BL Brushless in the “Motor Type” section. The BL means that the drill has a longer lifespan than a drill with a standard motor. Life is doubled compared to other motors.

Q: What is a Makita LXT battery?

Ans: Makita LXT batteries are the world’s largest and most compatible cordless tool system built by Makita. These are slider-style batteries with an 18v power system that gives maximum efficiency and performance. Advance motor system for longer span up to 50%. Efficient power management with one system compatibility for multi-tool usage.

Q: What does XR mean on Dewalt?

Ans: In the cordless drill torque chart and table, you have seen the “XR” with Li-Ion in Battery Type. The XR means Xtreme Runtime. With XR on a DeWalt tool, it refers to the motor is brushless. These XR batteries are more efficient with a 33% longer runtime.

Q: What Is a 21700 Battery Technology?

Ans: The Bosch GXL18V-224B25 has the Next-Gen Li-Ion 21700 cells. These are rechargeable Li-Ion batteries similar to other batteries. The 21700 is named after the battery size. The exact size is 21700 is 21 mm (diameter) x 70 mm (length).

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