What is the main difference between the Keychron K2 V2 and K3 QMK V3?

The K2 V2 has a 4000mAh battery and a vendor-stated runtime of up to 240 hours with backlighting off. The K3 QMK V3 has a low-profile design, QMK support, and a listed weight of 540g.

Which has longer battery life, the Keychron K2 V2 or K3 QMK V3?

The K2 V2 has the larger battery at 4000mAh, and its vendor states up to 240 hours with backlighting off. The K3 QMK V3 has a 1550mAh battery and a stated maximum of up to 124 hours with backlighting off.

Is the Keychron K3 QMK V3 better for travel than the K2 V2?

The K3 QMK V3 is the lighter option in the listed specifications at 540g, with dimensions of 306 x 116 mm. The K2 V2 vendor lists weights of 663g for the plastic frame and 794g for the aluminum frame, but its 4000mAh battery is larger.

Do the Keychron K2 V2 and K3 QMK V3 support Bluetooth?

Both keyboards list Bluetooth and wired connectivity. The vendor descriptions say each can connect to up to three devices over Bluetooth.

Does the Keychron K2 V2 support QMK?

The K2 V2 vendor description mentions QMK firmware and the Launcher web app. The K2 product metadata does not list QMK as an extra feature, so verify the exact version or configuration before buying if QMK is essential.

Does the Keychron K3 QMK V3 support macros?

Yes, Keychron describes QMK and its Launcher web app as tools for setting key remaps, macros, and shortcuts. The vendor says the Launcher is used with the keyboard connected in wired mode.

Are the Keychron K2 V2 and K3 QMK V3 hot-swappable?

Both product listings include hot-swappable support. The K3 vendor specifies compatible Keychron or Gateron low-profile mechanical switches, while the K2 vendor lists hot-swappable Keychron Super switches.

What is the wired polling rate of the Keychron K2 V2 and K3 QMK V3?

The K2 V2 vendor specification lists 1000 Hz in wired mode, and the K3 QMK V3 vendor specification also lists 1000 Hz in wired mode. The K3 vendor additionally states 90 Hz in Bluetooth mode.

Which keyboard is low profile, the Keychron K2 V2 or K3 QMK V3?

The K3 QMK V3 is explicitly described as a low-profile keyboard and uses low-profile mechanical switches. The K2 V2 is listed with a regular 75% layout and is not described as low profile.

Do the Keychron K2 V2 and K3 QMK V3 work with Mac and Windows?

Both metadata listings include Mac/Win support, and both vendor descriptions identify macOS and Windows compatibility. The K3 vendor also describes the Launcher as compatible with Linux through supported browsers.

Which keyboard has more switch options, the Keychron K2 V2 or K3 QMK V3?

The K2 V2 vendor lists Keychron Super red, blue, and brown switches. The K3 QMK V3 vendor lists low-profile red, brown, and banana options, with hot-swapping available on the specified version.

Do both Keychron keyboards have RGB lighting?

Both metadata listings include RGB lighting options. The K3 vendor describes 22 or more RGB backlight settings, while the K2 vendor describes adjustable four-level RGB backlighting.

Keychron K2 V2 vs K3 QMK V3: Battery and Low Profile

Compare Keychron K2 V2 vs K3 QMK V3 Differences Side by Side

This comparison suits buyers choosing between two wireless Keychron keyboards with compact 75% layouts, hot-swappable switches, and Bluetooth or wired connections. The K2 V2 prioritizes battery capacity, while the K3 QMK V3 is a low-profile model with QMK support and a lighter listed weight. Both offer ANSI and several ISO layouts, but the K3's low-profile switch format and the K2's larger battery point to different priorities. Consider whether longer stated battery life or a slimmer build and deeper remapping options matter more to your setup.

Model
Rating	4.9 stars (4382 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2019 Has Linear, Tactile, Clicky switch options Built with the ANSI, ISO, ISO-UK, JIS, ISO-Nordic, ISO-DE, ISO-FR, ISO-ES layout standard Uses a Tray Mount mounting style Equipped with a 4000 mAh battery Made with a Aluminum, Plastic case Features ABS, PBT keycaps Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting	Released in 2024 Has Tactile, Linear switch options Features a low-profile design Built with the ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI layout standard Utilizes Hall effect sensors Supports QMK firmware Uses a Plate Mount mounting style Runs at a 1000 Hz polling rate Equipped with a 1550 mAh battery Weighs about 540 g Sized at 19 x 306 x 116 mm Made with a ABS, Aluminum case Features ABS keycaps Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Score	Scores Performance: 78.9 Build Quality: 71.7 Productivity: 75.7 Customizability: 73.9 Portability: 82.8	Scores Performance: 84.5 Build Quality: 71.2 Productivity: 73.6 Customizability: 78.3 Portability: 77.2
Name	Name Keychron K2 V2	Name Keychron K3 QMK V3
Release year	Release year 2019	Release year 2024
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Tactile, Linear
Profile	Profile Normal Profile	Profile Low Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
Layout Standard	Layout Standard ANSI, ISO, ISO-UK, JIS, ISO-Nordic, ISO-DE, ISO-FR, ISO-ES	Layout Standard ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, Wired, Wireless	Connection Bluetooth, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate 1000 Hz
Battery capacity	Battery capacity 4000 mAh	Battery capacity 1550 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Tray Mount	Mount Style Plate Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, White, North-face	Backlight Rgb, North-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum, Plastic	Case Material ABS, Aluminum
Keycaps Material	Keycaps Material ABS, PBT	Keycaps Material ABS
Dimensions	Dimensions -	Dimensions 19 x 306 x 116 mm
Weight	Weight -	Weight 540g

Keychron K2 Wireless Mechanical Keyboard (Version 2)

Keychron K3 QMK Kabellose Mechanische Tastatur (ISO Layout) - Version 3

Select a keyboard to compare

4.9 stars (4382 reviews)

0.0 stars (0 reviews)

Released in 2019
Has Linear, Tactile, Clicky switch options
Built with the ANSI, ISO, ISO-UK, JIS, ISO-Nordic, ISO-DE, ISO-FR, ISO-ES layout standard
Uses a Tray Mount mounting style
Equipped with a 4000 mAh battery
Made with a Aluminum, Plastic case
Features ABS, PBT keycaps
Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting

Released in 2024
Has Tactile, Linear switch options
Features a low-profile design
Built with the ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI layout standard
Utilizes Hall effect sensors
Supports QMK firmware
Uses a Plate Mount mounting style
Runs at a 1000 Hz polling rate
Equipped with a 1550 mAh battery
Weighs about 540 g
Sized at 19 x 306 x 116 mm
Made with a ABS, Aluminum case
Features ABS keycaps
Offers Yes, Rgb, North-face, Rgb North-face RGB lighting

Scores

Performance: 78.9
Build Quality: 71.7
Productivity: 75.7
Customizability: 73.9
Portability: 82.8

Scores

Performance: 84.5
Build Quality: 71.2
Productivity: 73.6
Customizability: 78.3
Portability: 77.2

Name

Keychron K2 V2

Name

Keychron K3 QMK V3

Release year

2019

Release year

2024

Switch Options

Linear, Tactile, Clicky

Switch Options

Tactile, Linear

Profile

Normal Profile

Profile

Low Profile

Hot Swappable

Layout Size

75%

Layout Size

75%

Layout Standard

ANSI, ISO, ISO-UK, JIS, ISO-Nordic, ISO-DE, ISO-FR, ISO-ES

Layout Standard

ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI

Layout Ergonomics

Normal

Layout Ergonomics

Normal

Knob Support

Display Support

Mac/Win Support

Multi-Media Keys

USB-C

USB passthrough

Connection

Bluetooth, Wired, Wireless

Connection

Bluetooth, Wired, Wireless

Polling Rate

1000 Hz

Battery capacity

4000 mAh

Battery capacity

1550 mAh

Hall Effect Support

QMK Support

VIA Support

VIAL Support

N-Key Rollover

Rapid Trigger

Mount Style

Tray Mount

Mount Style

Plate Mount

Screw in Stabilizers

Sound Dampening

Backlight

Rgb, White, North-face

Backlight

Rgb, North-face

Case Colors

Case Material

Aluminum, Plastic

Case Material

ABS, Aluminum

Keycaps Material

ABS, PBT

Keycaps Material

ABS

Dimensions

19 x 306 x 116 mm

Weight

540g

Pros and Trade-offs

Pick the K2 V2 if battery capacity and longer stated runtime are your main priorities. Choose the K3 QMK V3 if you want a lighter low-profile keyboard with explicit QMK remapping and macro support. Both provide hot-swappable options and wired or Bluetooth connectivity, so the deciding trade-off is battery life versus low-profile customization.

Keychron K2 V2

+4000mAh battery, with the vendor stating up to 240 hours of typing with backlighting off.
+75% layout with 84 keys and dedicated Page Up/Down, Home, End, and Screen capture functions listed by the vendor.
+Bluetooth and USB-C wired connectivity, with Bluetooth connection to up to three devices described by the vendor.
+Hot-swappable switches and choice of Keychron Super red, blue, or brown switches in the vendor listing.

−The vendor lists the plastic-frame version at 663g and the aluminum-frame version at 794g, both heavier than the K3's listed 540g.
−The K2 V2 is not identified as a low-profile keyboard, unlike the K3 QMK V3.
−The metadata lists ABS and PBT keycap materials, while the vendor specification describes ABS keycaps, so buyers should verify the selected version.

Keychron K3 QMK V3

+Low-profile 75% design with a listed weight of 540g and dimensions of 306 x 116 mm.
+QMK support for key remapping, macros, and shortcuts, alongside the Keychron Launcher web app.
+Hot-swappable version supports Keychron or Gateron low-profile mechanical switches, according to the vendor.
+Vendor specifications state 1000 Hz polling in wired mode and N-key rollover in both wired and wireless modes.

−The 1550mAh battery is smaller than the K2 V2's 4000mAh battery.
−The vendor states up to 124 hours with backlighting off, compared with up to 240 hours for the K2 V2.
−Hot-swapping is limited to compatible low-profile mechanical switches, rather than being described as support for standard-profile switches.

Which Keyboard Is Better for Your Needs?

The K2 V2 is the more straightforward choice for buyers who prioritize battery capacity and longer stated runtime between charges. The K3 QMK V3 takes the lead for low-profile portability and customization through QMK. Gaming evidence is close because both vendor pages state a 1000 Hz wired polling rate, while the K3's stated wireless NKRO is an additional point in its favor. For general content workflows, layout and feature needs are similar, so choose based on whether function-key convenience or remappable shortcuts matter more.

GamingKeychron K3 QMK V3

•The K3 QMK V3 lists a 1000 Hz wired polling rate and also supports Bluetooth and wired connections.
•Its vendor description specifies N-key rollover in both wireless and wired modes.
•The K2 vendor page also lists 1000 Hz in wired mode, so the K3's advantage is not a stated wired polling-rate difference.

OfficeKeychron K2 V2

•The K2 V2 has a 4000mAh battery, compared with 1550mAh for the K3 QMK V3.
•The K2 vendor description states up to 240 hours with backlighting off; the K3 listing states up to 124 hours under that condition.
•Both offer Bluetooth, wired USB-C connectivity, and multi-media keys.

ProgrammingKeychron K3 QMK V3

•The K3 QMK V3 explicitly supports QMK for key remapping, macros, and shortcuts.
•Its Keychron Launcher web app is described as allowing key customization.
•The K2 vendor page mentions QMK and Launcher, but the K3 product listing makes QMK support a clear headline feature.

TravelKeychron K3 QMK V3

•The K3 QMK V3 weighs 540g, while the K2 V2 vendor listing gives 663g for the plastic frame and 794g for the aluminum frame.
•The K3's listed dimensions are 306 x 116 mm, smaller than the K2 vendor dimensions for either frame option.
•The K2 has a larger 4000mAh battery versus the K3's 1550mAh, which favors fewer charging interruptions.

ModdingKeychron K3 QMK V3

•Both keyboards are listed as hot-swappable.
•The K3 QMK V3 supports QMK and offers key remapping and macros through the Launcher web app.
•The K3 vendor specifies compatibility with Keychron or Gateron low-profile mechanical switches, while the K2 vendor lists hot-swappable Super switches.

Content CreationTie

•Both use a 75% layout and include multi-media keys and N-key rollover.
•The K2 vendor calls out function keys including Page Up/Down, Home, End, and Screen capture.
•The K3 supports QMK remapping and macros, which can suit workflows that benefit from customized shortcuts.

Frequently Asked Questions (FAQ)