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Head to head · Prices checked Oct 21, 2026

Ajazz AK35I V4 vs Keychron J5 QMK

Get the Ajazz AK35I V4 for the 10,000 mAh battery and knob. Get the Keychron J5 QMK for qmk and sound dampening.

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 AK35I V4

Keychron J5 QMK

  • Battery

    10,000 mAh

    3,750 mAh

  • Knob

    Yes

    No

  • Display

    TFT

    None

  • QMK

    No

    Yes

  • Sound dampening

    No

    Yes

KeebFinder scores

How we score
  • Ajazz AK35I V4
  • Keychron J5 QMK
Performance
69
78
Build quality
66
61
Productivity
74
84
Customizability
80
75
Portability
68
57

What they share

  • Layout size: 100%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Case material: ABS
See every spec side by side

Full specs

Ajazz AK35I V4 vs Keychron J5 QMK specs

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

8 of 24 specs differ

Ajazz AK35I V4

Keychron J5 QMK

Typing & switches

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

No
Yes

Layout

Layout size

100%
100%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

TFT
None

Media keys

Yes
No

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

10,000 mAhBetter
3,750 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS
ABS

Plate material

FR4
—

Keycaps

—
PBT

Weight

—
1,100 g

Dimensions

—
35 x 436 x 129 mm

Typing angle

—
2°

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2025
2025

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Lowest price across stores, Amazon excluded.

  • AmazonGlobal

    Check price
    Visit
  • WhatGeekCN

    Out of stock
    $115Visit
  • Keychron (DE)DE

    In stock
    $109Visit
  • AmazonGlobal

    Check price
    ~$109Visit

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.

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