Keychron K9 Max vs MelGeek O2
Get the Keychron K9 Max for hot-swappable. Get the MelGeek O2 for the 2,500 mAh battery.
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5.0 · 2 reviews
from$137at Keychron (DE)
No reviews
from$109at MelGeek
90-day lowLowest price in 90 days
Which one should you get?
Get the
Keychron K9 Max
Hot-swappable
Build quality in the top 25% of 60% boards under $150.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- Compact layout only. No function row, dedicated arrow keys, or numpad.
Get the
MelGeek O2
Battery
Build quality in the top 50% of Numpad boards under $150.
- Switches are soldered. Swapping them means soldering.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- Numpad only. This is not a full keyboard.
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.
Keychron K9 Max
MelGeek O2
Layout size
60%
Numpad
Hot-swappable
Yes
No
Switch changes without soldering
Battery
1,550 mAh
2,500 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Case material
ABS
ABS, Aluminum, Polycarbonate
- Keychron K9 Max
- MelGeek O2
- Performance
- 7554
- Build quality
- 7665
- Productivity
- 9153
- Customizability
- 9250
- Portability
- 8782
- Connection: Bluetooth, 2.4 GHz, Wired
- Max polling rate: 1,000 Hz
- Sound dampening
- Keycaps: PBT
Keychron K9 Max vs MelGeek O2 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
14 of 27 specs differ
Keychron K9 Max
MelGeek O2
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
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