Keychron B1 Pro vs B3 ProISO Layout vs ANSI Battery Life
Choose the B1 Pro for international ISO layouts or the B3 Pro for longer battery life in a standard ANSI format.
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Which one should you get?
Get the
Keychron B1 Pro
ISO Layout
Build quality in the bottom 5% of 75% boards under $50.
- Extensive ISO layout support including German, UK, Nordic, and several others.
- Includes a protective, washable silicone skin for spill and dust resistance.
- Programmable via the Keychron Launcher web app for key remapping and macros.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
Get the
Keychron B3 Pro
ANSI Battery Life
Build quality in the bottom 5% of 75% boards under $50.
- Larger 1200mAh battery for longer wireless use.
- Slightly lighter weight of 410g.
- Includes a storage slot on the keyboard for its 2.4 GHz receiver.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Your geographic location and keyboard layout standard are the ultimate deciding factors. If you need a German, UK, Nordic, or other ISO layout, the Keychron B1 Pro is the necessary choice. If you use a standard ANSI layout and value longer battery life and a tad less weight, the Keychron B3 Pro is the better option. All other features, from connectivity to software, are shared.
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 B1 Pro
Keychron B3 Pro
Battery
800 mAh
1,200 mAh
A larger battery means fewer cables during the day
Case material
ABS, Plastic
ABS
Weight
425 g
410 g
Heavier boards stay planted and lighter ones travel
Layout standard
ANSI, ISO, JIS
ANSI
ISO and JIS exist so regional layouts fit
Released
2024
2025
- Keychron B1 Pro
- Keychron B3 Pro
- Performance
- 5050
- Build quality
- 4243
- Productivity
- 6970
- Customizability
- 4647
- Portability
- 7879
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Low profile
- Max polling rate: 1,000 Hz
- Switch options: Clicky, Linear, Tactile
- Keycaps: ABS
What will you mostly use it for?
The B1 Pro is the clear choice for office and programming use in regions requiring ISO layouts like Germany or the UK. The B3 Pro has a slight edge for travel due to its larger battery and lower weight. For gaming, modding, and content creation, the keyboards are effectively tied, sharing core performance and customization features. Your location and specific layout needs are the primary deciders.
It's a tie
- Both offer a 1000 Hz polling rate over their 2.4 GHz wireless connection.
- Both have the same low-profile switch options and 75% layout.
- Latency and performance characteristics are functionally equivalent.
Keychron B1 Pro vs B3 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
6 of 19 specs differ
Keychron B1 Pro
Keychron B3 Pro
Switch options
Low profile
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Typing angle
Backlight
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B1 Pro
Keychron
ISO
In stockShips to you
Keychron (DE)
ISO
In stockDoes not ship to you
Keychron B3 Pro
No ISO layout at the stores we track.
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
Keychron B1 Pro vs B3 Pro: your questions
The main difference is layout support. The B1 Pro is offered in numerous ISO layouts for international markets, while the B3 Pro is a standard ANSI layout keyboard. The B3 Pro also has a larger 1200mAh battery compared to the B1 Pro's 800mAh cell.
No. According to their specifications and descriptions, both the B1 Pro and B3 Pro are pre-built keyboards. This indicates the switches are soldered and not user-replaceable without soldering equipment.
The B3 Pro has a larger capacity battery at 1200mAh, while the B1 Pro has an 800mAh battery. Based on the manufacturer's specifications, this should give the B3 Pro a longer runtime, though actual hours will depend on usage patterns and connection type.
Yes. Both the Keychron B1 Pro and B3 Pro list Mac/Win support as a feature. The manufacturer states they offer a Mac layout with multimedia keys while remaining compatible with Windows, and keymaps can be configured for both systems in the Keychron Launcher software.
Yes. Both keyboards are programmable using the Keychron Launcher, which is a web-based app. It allows for key remapping, creating macros, and setting up shortcuts without needing installed software.
Both keyboards use ABS keycaps. The manufacturer describes them as concave keycaps designed for precise input and comfortable typing.
No. The product specifications for both the Keychron B1 Pro and B3 Pro explicitly list RGB as 'No'. These are backlight-free, low-profile keyboards.
Both keyboards feature a 1000 Hz polling rate over their 2.4 GHz wireless connection, as stated in their specifications. This provides responsive performance for gaming and general use.
The product descriptions do not list a carrying case as a standard included accessory. They mention a protective silicone skin is included for both models to guard against spills and dust.
The B3 Pro is slightly more portable by weight, at 410g versus the B1 Pro's 425g. Both share a 75% low-profile form factor and similar slim dimensions, making them both highly portable overall.
The manufacturer's description for both models states they use Bluetooth 5.2 for wireless connectivity alongside a 2.4 GHz dongle and wired USB-C.
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