Nuphy Air75 V2 vs Keychron K3 MaxBattery Life vs Layout Choice
Choose the Nuphy Air75 V2 for superior battery life and sound tuning, or the Keychron K3 Max for broader layout compatibility and a more extensive accessory ecosystem.
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4.1 · 16 reviews
from$89at MK
Which one should you get?
Get the
Nuphy Air75 V2
Battery Life
Build quality in the top 15% of 75% boards under $100.
- Large 4000mAh battery for extended wireless use.
- Includes specific sound-dampening foams (plate poron, IXPE) and spacebar silicone.
- Offers a wide range of first-party accessories like keycaps, switches, and the NuFolio V3.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Get the
Keychron K3 Max
Layout Choice
Build quality in the top 5% of 75% boards under $100.
- Supports a wide array of layouts including ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, and ISO-Nordic.
- Features dedicated multimedia keys and advanced RGB controls like per-key and mix RGB.
- Offers two adjustable typing angles (3° and 7°) for ergonomics.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Your priority should guide your choice. If unmatched wireless battery life, a focus on acoustic tuning, and a vast first-party accessory catalog are most important, the Nuphy Air75 V2 is the better pick. If you need support for ISO or other international layouts, value dedicated multimedia controls and sophisticated RGB, or want more ergonomic angle options, the Keychron K3 Max is the superior keyboard. Both are excellent, capable boards that excel in programmability and wireless performance.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Nuphy Air75 V2
Keychron K3 Max
Battery
4,000 mAh
1,550 mAh
A larger battery means fewer cables during the day
Case material
ABS, Aluminum
ABS, Aluminum, Plastic, Wood
Switch options
Linear, Low-profile Mechanical, Tactile
Clicky, Linear, Tactile
Weight
598 g
580 g
Heavier boards stay planted and lighter ones travel
Layout standard
ANSI
ANSI, ISO, ISO-DE, ISO-Nordic, ISO-SW, ISO-UK
ISO and JIS exist so regional layouts fit
- Nuphy Air75 V2
- Keychron K3 Max
- Performance
- 8181
- Build quality
- 8086
- Productivity
- 8994
- Customizability
- 9491
- Portability
- 7977
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Low profile
- Max polling rate: 1,000 Hz
- QMK
What will you mostly use it for?
The Keychron K3 Max takes a clear lead for office use due to its extensive international layout support and dedicated multimedia keys. For travel and modding, the Nuphy Air75 V2 is stronger, thanks to its larger battery, thinner profile, and detailed sound-optimizing internal materials. Gaming and programming are a tie, as both offer the core high-performance features needed. Content creators might lean toward the K3 Max for its advanced RGB lighting controls.
It's a tie
- Both keyboards offer a 1000Hz polling rate in 2.4GHz and wired modes for low latency.
- Both are hot-swappable, allowing for switch customization to personal preference.
- Both support N-key rollover for accurate simultaneous key presses.
Nuphy Air75 V2 vs Keychron K3 Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 27 specs differ
Nuphy Air75 V2
Keychron K3 Max
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Nuphy Air75 V2
No ISO layout at the stores we track.
Keychron K3 Max
Input Gear
ISO-DE
Out of stockShips to you
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
Nuphy Air75 V2 vs Keychron K3 Max: your questions
The Nuphy Air75 V2 has a significantly larger 4000mAh battery, while the Keychron K3 Max has a 1550mAh battery. Nuphy's product listing claims up to 220 hours of use with lighting off, suggesting longer intervals between charges compared to the K3 Max.
Yes. The Keychron K3 Max vendor description states it offers a Mac layout and includes keycaps for both macOS and Windows. It also mentions providing the same multimedia and function key functions as Apple keyboards for Mac users.
Yes, both the Nuphy Air75 V2 and Keychron K3 Max (in the specified hot-swappable versions) support hot-swapping switches without soldering. However, Keychron notes its hot-swappable version is only compatible with Gateron or Keychron brand low-profile mechanical switches.
Both keyboards offer extensive customization through QMK and VIA firmware, allowing for key remapping and macro creation. The Keychron K3 Max also promotes its Keychron Launcher web app for configuration, while Nuphy highlights VIA's compatibility across all major desktop platforms.
Yes. The metadata lists Mac/Win support for the Nuphy Air75 V2, confirming compatibility with Windows. Its 75% ANSI layout includes a standard key that functions as the Windows key.
Both support low-profile mechanical switches. The Nuphy Air75 V2 is listed as compatible with Gateron Low-profile Mechanical (KS-33) switches and offers its own Nuphy low-profile switches. The Keychron K3 Max hot-swappable version is specified to work with Gateron or Keychron low-profile mechanical switches only.
The Nuphy Air75 V2 provides more detailed information on internal sound-dampening materials, specifically listing plate poron foam, IXPE PCB foam, and spacebar silicone. This explicit detailing may make it a more straightforward choice for users interested in sound tuning.
Neither keyboard includes a travel case in the standard box contents listed. However, Nuphy sells the NuPack carrying case separately, and its vendor description details the NuFolio V3 folio case. Keychron's site offers various carrying cases as add-on purchases.
Both the Nuphy Air75 V2 and Keychron K3 Max offer a 1000Hz polling rate in their 2.4GHz wireless and wired connection modes, which is suitable for responsive gaming.
Yes. The Keychron K3 Max metadata explicitly supports ISO, ISO-UK, ISO-DE, ISO-SW, and ISO-Nordic layouts, meaning its PCB and plate are designed to accommodate the different enter key and key sizes of ISO layouts.
The Keychron K3 Max vendor description highlights advanced lighting features including per-key RGB and mix RGB control, allowing for split-zone lighting effects. The Nuphy Air75 V2 lists 40 backlight modes and RGB sidelight bars.
The Keychron K3 Max uses screw-in stabilizers, which are generally easier to remove and replace than clip-in types. The Nuphy Air75 V2 does not specify its stabilizer type in the provided information, though its spacebar is noted to use silicone sound shaping tech.
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