Head to head · Prices checked Nov 13, 2026

Ajazz AC100 vs Keychron K4 Max

Get the Ajazz AC100 for the 8,000 mAh battery.

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Battery

Ajazz AC100

No reviews

from$89at Mechkeys

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Keychron K4 Max

5.0 (1)5.0 · 1 reviews

from$99at Keychron

Compare 3 stores

Quick verdict

Which one should you get?

Get the

Ajazz AC100

Battery

Build quality in the bottom 40% of 96% boards under $100.

Rules this board out

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.

$89 at Mechkeys

Get the

Keychron K4 Max

Build quality in the top 20% of 96% boards under $100.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

$99 at Keychron

What actually differs

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.

Ajazz AC100

Keychron K4 Max

Battery
8,000 mAh
4,000 mAh
A larger battery means fewer cables during the day
Case material
Aluminum
ABS
Switch options
Linear
Clicky, Linear, Tactile
Mount style
Gasket Mount
PCB Mount
Display
TFT
None
A case display rather than a typing feature

KeebFinder scores

How we score

Ajazz AC100
Keychron K4 Max

Performance: 57
82
Build quality: 59
80
Productivity: 64
89
Customizability: 65
92
Portability: 62
51

What they share

Layout size: 96%
Connection: Bluetooth, 2.4 GHz, Wired
Hot-swappable
Keycaps: PBT

See every spec side by side

Full specs

Ajazz AC100 vs Keychron K4 Max specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

16 of 26 specs differ

Spec

Ajazz AC100

Keychron K4 Max

Typing & switches

Switch options

Linear

Clicky, Linear, Tactile

Hot-swappable

Yes

Mount style

Gasket Mount

PCB Mount

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

96%

Layout standard

ANSI

ANSI, ISO

Ergonomics

Standard

Display

TFT

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

—

1,000 Hz

Battery

8,000 mAhBetter

4,000 mAh

USB-C

Yes

Build & materials

Case material

Aluminum

ABS

Plate material

FR4, Plastic

Steel

Keycaps

PBT

Weight

2,100 g

1,290 g

Dimensions

20 x 145 x 410 mm

31 x 391 x 140 mm

Typing angle

—

3°

Backlight

RGB, south-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2024

2025

Where to buy

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.

Ajazz AC1003 stores