Keychron K3 Max vs Nuphy Air75 V3: Open-Source vs Battery Life

Compare Keychron K3 Max vs Nuphy Air75 V3 Differences Side by Side

This comparison is for users deciding between two premium low-profile 75% wireless keyboards. The choice is difficult because both offer hot-swappable switches, multi-device connectivity, and compact form factors. The K3 Max emphasizes open-source firmware and extensive layout support, while the Air75 V3 focuses on long battery life, a unique gasket mount, and Mac-centric design. Your priority in firmware freedom versus endurance and acoustic tuning will determine the winner.

Model
Rating	4.6 stars (14 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2023 Has Linear, Tactile, Clicky switch options Built with the ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI layout standard Uses a Plate Mount mounting style Equipped with a 1550 mAh battery Weighs about 580 g Sized at 22 x 306 x 116 mm Made with a ABS, Aluminum, Wood, Plastic case Features PBT, ABS keycaps Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting	Released in 2024 Has Tactile, Linear, Clicky, Low-profile 3.0, Mechanical switch options Built with the ANSI, ISO-FR, ISO, ISO-DE, ISO-UK, JIS layout standard Comes with a knob Uses a Gasket Mount mounting style Equipped with a 4000 mAh battery Weighs about 750 g Sized at 13 x 319 x 129 mm Made with a Aluminum, ABS, Polycarbonate, Plastic case Features PBT keycaps Offers Yes, Rgb, North-face, Rgb North-face, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 81 Build Quality: 86.4 Productivity: 94.4 Customizability: 92.3 Portability: 76.9	Scores Performance: 81.9 Build Quality: 88.2 Productivity: 97.2 Customizability: 99.6 Portability: 81.5
Name	Name Keychron K3 Max	Name Nuphy Air75 V3
Release year	Release year 2023	Release year 2024
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Tactile, Linear, Clicky, Low-profile 3.0, Mechanical
Profile	Profile Low Profile	Profile Low Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
Layout Standard	Layout Standard ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI	Layout Standard ANSI, ISO-FR, ISO, ISO-DE, ISO-UK, JIS
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, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 1550 mAh	Battery capacity 4000 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 Plate Mount	Mount Style Gasket 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, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS, Aluminum, Wood, Plastic	Case Material Aluminum, ABS, Polycarbonate, Plastic
Keycaps Material	Keycaps Material PBT, ABS	Keycaps Material PBT
Dimensions	Dimensions 22 x 306 x 116 mm	Dimensions 13 x 319 x 129 mm
Weight	Weight 580g	Weight 750g

Select a keyboard to compare

4.6 stars (14 reviews)

0.0 stars (0 reviews)

Released in 2023
Has Linear, Tactile, Clicky switch options
Built with the ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI layout standard
Uses a Plate Mount mounting style
Equipped with a 1550 mAh battery
Weighs about 580 g
Sized at 22 x 306 x 116 mm
Made with a ABS, Aluminum, Wood, Plastic case
Features PBT, ABS keycaps
Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting

Released in 2024
Has Tactile, Linear, Clicky, Low-profile 3.0, Mechanical switch options
Built with the ANSI, ISO-FR, ISO, ISO-DE, ISO-UK, JIS layout standard
Comes with a knob
Uses a Gasket Mount mounting style
Equipped with a 4000 mAh battery
Weighs about 750 g
Sized at 13 x 319 x 129 mm
Made with a Aluminum, ABS, Polycarbonate, Plastic case
Features PBT keycaps
Offers Yes, Rgb, North-face, Rgb North-face, South-face, Rgb South-face RGB lighting

Scores

Performance: 81
Build Quality: 86.4
Productivity: 94.4
Customizability: 92.3
Portability: 76.9

Scores

Performance: 81.9
Build Quality: 88.2
Productivity: 97.2
Customizability: 99.6
Portability: 81.5

Name

Keychron K3 Max

Name

Nuphy Air75 V3

Release year

2023

Release year

2024

Switch Options

Linear, Tactile, Clicky

Switch Options

Tactile, Linear, Clicky, Low-profile 3.0, Mechanical

Profile

Low Profile

Profile

Low Profile

Hot Swappable

Layout Size

75%

Layout Size

75%

Layout Standard

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

Layout Standard

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

Layout Ergonomics

Normal

Layout Ergonomics

Normal

Knob Support

Display Support

Mac/Win Support

Multi-Media Keys

USB-C

USB passthrough

Connection

Bluetooth, 2.4 GHz, Wired, Wireless

Connection

Bluetooth, 2.4 GHz, Wired, Wireless

Polling Rate

1000 Hz

Polling Rate

1000 Hz

Battery capacity

1550 mAh

Battery capacity

4000 mAh

Hall Effect Support

QMK Support

VIA Support

VIAL Support

N-Key Rollover

Rapid Trigger

Mount Style

Plate Mount

Mount Style

Gasket Mount

Screw in Stabilizers

Sound Dampening

Backlight

Rgb, White, North-face

Backlight

Rgb, North-face, South-face

Case Colors

Case Material

ABS, Aluminum, Wood, Plastic

Case Material

Aluminum, ABS, Polycarbonate, Plastic

Keycaps Material

PBT, ABS

Keycaps Material

PBT

Dimensions

22 x 306 x 116 mm

Dimensions

13 x 319 x 129 mm

Weight

580g

Weight

750g

Pros and Trade-offs

Select the Keychron K3 Max if your priority is unbounded customization through QMK/VIA, you need specific ISO layouts, or you value open-source firmware. Opt for the Nuphy Air75 V3 if you require maximum battery life, prefer a gasket-mounted typing experience with a knob, and primarily use Apple devices. The K3 Max is a tool for tinkerers, while the Air75 V3 is a refined, endurance-focused companion.

Keychron K3 Max

+Native support for QMK and VIA firmware for extensive key remapping.
+Compatible with a wide range of ISO layouts for international users.
+Includes internal IXPE acoustic foam and latex foam for sound dampening.
+Offers a hot-swappable version compatible with Gateron and Keychron low-profile switches.
+Vendor page promotes a web-based configurator (Keychron Launcher) usable without software installs.

−Smaller 1550mAh battery compared to the competition.
−Uses a plate mount style instead of a gasket mount.
−Lower profile may be less ergonomic for some without the adjustable feet deployed.

Nuphy Air75 V3

+Substantially larger 4000mAh battery for extended wireless use.
+Features a gasket mount design for a potentially more cushioned typing feel.
+Includes a programmable knob for multimedia or application control.
+Thinner overall design (13mm) and includes dedicated mobile accessories like the NuFolio.
+Vendor description emphasizes deep integration with Mac and iPad ecosystems.

−Lacks support for QMK or VIA open-source firmware.
−Supports fewer international ISO layouts than the K3 Max.
−No mention of included internal sound-dampening foam in the provided description.

Which Keyboard Is Better for Your Needs?

The Keychron K3 Max wins for programming and modding due to its superior firmware support and customization depth. The Nuphy Air75 V3 takes the lead for office work, travel, and content creation, leveraging its exceptional battery, portable accessories, and included knob. Gaming is a close call, but the K3 Max's explicit gaming-focused marketing gives it a slight edge. Your workflow dictates the choice: open-source flexibility versus all-day endurance and multimedia control.

GamingKeychron K3 Max

•Both offer a 1000 Hz polling rate in 2.4 GHz and wired modes for low latency.
•The K3 Max's vendor page highlights its 1000 Hz polling rate for competitive gaming.
•The K3 Max supports more switch types including tactile options, which some gamers prefer.

OfficeNuphy Air75 V3

•The Air75 V3's massive 4000mAh battery promises significantly longer use between charges.
•Its vendor description emphasizes deep Mac/iPad integration and a comprehensive mobile accessory ecosystem.
•The 3-stage adjustable kickstand provides ergonomic flexibility for long typing sessions.

ProgrammingKeychron K3 Max

•Native QMK and VIA support on the K3 Max allows for limitless key remapping and macro creation.
•It supports a wider array of international ISO layouts (ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic).
•The vendor page promotes the Keychron Launcher web app for programming keys on any OS without downloads.

TravelNuphy Air75 V3

•The Air75 V3 is thinner at 13mm height compared to the K3 Max's 17mm.
•Its vendor page specifically markets the NuFolio case and 3-way stand for mobile use with MacBooks and iPads.
•The larger battery reduces the frequency of needing to pack a charging cable.

ModdingKeychron K3 Max

•The K3 Max explicitly supports QMK open-source firmware, allowing for deep firmware customization.
•Its vendor page details internal IXPE and latex foam layers for sound dampening, appealing to modders.
•It offers a choice of keycap materials (PBT or ABS) and more case material options including wood and aluminum.

Content CreationNuphy Air75 V3

•The Air75 V3 includes a programmable knob, useful for scrubbing timelines or adjusting volume.
•Its vendor description highlights a rhythm light bar that can function as a typing speed indicator.
•The gasket mount design may offer a softer, more consistent typing feel preferred for long writing sessions.

Frequently Asked Questions (FAQ)