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Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 3.0 vs Bat Knight BK75

Get the Jamesdonkey A3 3.0 for qmk and sound dampening. Get the Bat Knight BK75 for the 4,000 mAh battery and n-key rollover.

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.

Jamesdonkey A3 3.0

Bat Knight BK75

  • Battery

    3,750 mAh

    4,000 mAh

  • QMK

    Yes

    No

  • Sound dampening

    Yes

    No

  • Media keys

    Yes

    No

  • N-key rollover

    No

    Yes

KeebFinder scores

How we score
  • Jamesdonkey A3 3.0
  • Bat Knight BK75
Performance
54
79
Build quality
60
60
Productivity
80
63
Customizability
82
67
Portability
76
76

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Mount style: Gasket Mount
  • Knob
  • Keycaps: PBT
See every spec side by side

Full specs

Jamesdonkey A3 3.0 vs Bat Knight BK75 specs

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

7 of 22 specs differ

Jamesdonkey A3 3.0

Bat Knight BK75

Typing & switches

Switch options

—
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
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

3,750 mAh
4,000 mAhBetter

Build & materials

Case material

—
Plastic

Keycaps

PBT
PBT

Weight

—
1,400 g

Dimensions

42 x 148 x 329 mm
46 x 327 x 150 mm

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2023

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • MechkeysCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit
  • VelocifireCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit

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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