Keychron K0 Max vs V0 Ultra NumpadQMK or 8K Polling?
Choose the K0 Max for QMK, a low-profile aluminum-and-plastic frame, and lighter weight, or the V0 Ultra for 8000 Hz polling and substantially longer stated battery life.
Which one should you get?
Get the
Keychron K0 Max
- Low-profile design with low-profile double-shot PBT keycaps.
- QMK and VIA support, plus Keychron Launcher for key remapping and macros.
- Aluminum-and-plastic frame, with vendor-described IXPE and latex acoustic foam.
- Its 750 mAh battery is smaller than the V0 Ultra's 1800 mAh battery.
- 1000 Hz polling is below the V0 Ultra's listed 8000 Hz in wired and 2.4 GHz modes.
- The vendor describes switch compatibility as limited to Gateron and Keychron low-profile mechanical switches.
Get the
Keychron V0 Ultra Numpad
Battery
- 8000 Hz polling rate in wired and 2.4 GHz modes.
- 1800 mAh battery, with vendor-listed runtime up to 360 hours with backlight off.
- Gasket mount and PC plate, with vendor-described acoustic foam, IXPE, PET, and EPDM layers.
- Its listed 310 g weight and 117.6 x 138.9 mm dimensions make it larger and heavier than the K0 Max.
- The plastic case lacks the K0 Max's listed aluminum frame material.
- It lists ZMK firmware rather than QMK and does not list VIA support.
Choose the Keychron K0 Max if low-profile keys, QMK and VIA support, a lighter body, or its macro column are priorities. Pick the V0 Ultra if you want the higher wired and 2.4 GHz polling rate, longer stated battery life, gasket mount, or broader stated MX-style switch compatibility. Both provide a knob, hot-swap capability, and three connection options, so those shared features need not decide the purchase.
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 K0 Max
Keychron V0 Ultra Numpad
Battery
750 mAh
1,800 mAh
Low profile
Yes
No
Max polling rate
1,000 Hz
8,000 Hz
Case material
Aluminum, Plastic
Plastic
Switch options
Clicky, Linear, Silent, Tactile
Clicky, Linear, Tactile
- Keychron K0 Max
- Keychron V0 Ultra Numpad
- Performance
- 7987
- Build quality
- 8573
- Productivity
- 9587
- Customizability
- 9274
- Portability
- 8686
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Knob
- Sound dampening
What will you mostly use it for?
The V0 Ultra has the clearer gaming advantage on its higher listed polling rate, while the K0 Max is the more portable option by its listed weight and dimensions. For desk-based work, K0 Max suits buyers who specifically want QMK, VIA, and low-profile construction. Both can be configured through Launcher and include a knob, so content-creation use depends on whether the K0 Max macro column or V0 Ultra's gasket-mounted, foam-layered build appeals more. Modders should weigh K0 Max's QMK and VIA support against the V0 Ultra's broader stated MX-style switch compatibility.
Pick the Keychron V0 Ultra Numpad
- V0 Ultra lists 8000 Hz polling in wired and 2.4 GHz modes, compared with 1000 Hz for the K0 Max.
- Both models have N-key rollover and 2.4 GHz connectivity.
- Both are hot-swappable, with linear and tactile switch options listed.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K0 Max
11 owner reviews
“Perfect addition to my Nuphy Air75 v2. The keys line up well, and this gives me a knob and 10-key when I’m at my desk!”
“The K0 MAX is just right with its red Gateron switches! Typing on it feels really natural. 2 Stars less because the battery needs to be loaded again after 3 or four days of occasional usage.”
Keychron V0 Ultra Numpad
2 owner reviews
“The keys are a joy to type with, the back lighting is beautiful, and key mapping is incredibly customizable. The ultra series registers keystrokes very fast, and the wireless connection allows for freedom of desk placement. This is a great number pad!”
Keychron K0 Max vs V0 Ultra Numpad specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 27 specs differ
Keychron K0 Max
Keychron V0 Ultra Numpad
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
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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Keychron K0 Max vs V0 Ultra Numpad: your questions
The K0 Max is a low-profile numpad with QMK and VIA support, an aluminum-and-plastic frame, and 1000 Hz polling. The V0 Ultra uses a gasket mount and PC plate, lists ZMK firmware, and reaches 8000 Hz polling in wired and 2.4 GHz modes.
The V0 Ultra lists 8000 Hz polling in wired and 2.4 GHz modes, compared with 1000 Hz for the K0 Max. Both list 125 Hz polling over Bluetooth in their vendor specifications.
Keychron lists the V0 Ultra at up to 360 hours with the backlight off, and up to 250 hours with RGB at its lowest brightness. The K0 Max has a 750 mAh battery, and its vendor page lists up to 50 hours.
The K0 Max lists QMK and VIA support, and Keychron describes using its Launcher web app for remapping and macros. The V0 Ultra lists ZMK firmware and Launcher support, but not VIA.
Yes, both models are listed as hot-swappable. Keychron specifies Gateron and Keychron low-profile mechanical switches for the K0 Max, while the V0 Ultra supports almost all 3-pin and 5-pin MX-style mechanical switches, according to its product description.
The K0 Max is listed at 176.3 g and 99 x 116 mm. The V0 Ultra is listed at 310 g and 117.6 x 138.9 mm, making the K0 Max the lighter and smaller of the two by those measurements.
Both list knob support, and Keychron describes the K0 Max as having a rotary encoder knob on the left side. The V0 Ultra product listing identifies its assembled version as a knob model.
The K0 Max has an aluminum-and-plastic frame and plate mounting. The V0 Ultra has a plastic case, gasket mounting, and a polycarbonate plate.
Both list sound dampening. Keychron describes IXPE and latex foam in the K0 Max, while the V0 Ultra description lists multiple layers including sound-absorbing foam, IXPE, EPDM, PET film, and bottom-case acoustic foam.
Both support Bluetooth and 2.4 GHz wireless as well as a wired connection. The vendor pages list Bluetooth 5.3 for each, and both also include USB-C in their listed features.
The K0 Max comes with low-profile double-shot PBT keycaps in an LSA profile, according to Keychron. The V0 Ultra comes with OSA double-shot PBT keycaps.
Both work with Keychron Launcher for remapping keys and creating macros. The K0 Max additionally lists QMK and VIA support and has a vendor-described macro column, while the V0 Ultra uses ZMK firmware.
Not sold on either?
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