Keychron B40 vs J1
Get the Keychron B40 for knob. Get the Keychron J1 for hot-swappable and the 2,000 mAh battery.
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from$49at Keychron
3.0 · 5 reviews
from$59at Keychron
Which one should you get?
Get the
Keychron B40
Knob
Build quality in the bottom 15% of 75% boards under $50.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
Get the
Keychron J1
Hot-swappable
Build quality in the top 40% of 75% boards under $100.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
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 B40
Keychron J1
Hot-swappable
No
Yes
Switch changes without soldering
Battery
800 mAh
2,000 mAh
A larger battery means fewer cables during the day
Ergonomics
Alice
Standard
Knob
Yes
No
Weight
595 g
661 g
Heavier boards stay planted and lighter ones travel
- Keychron B40
- Keychron J1
- Performance
- 5382
- Build quality
- 4671
- Productivity
- 8189
- Customizability
- 4686
- Portability
- 7880
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Low profile
- Max polling rate: 1,000 Hz
- Case material: ABS
- Switch options: Clicky, Linear, Tactile
Keychron B40 vs J1 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 24 specs differ
Keychron B40
Keychron J1
Switch options
Hot-swappable
Low profile
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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