Grinders

Grinder

Femobook A2

A battery grinder for about $99 that turns a 38 mm heptagonal burr at hand grinder speed. Lance Hedrick called it the standout value of late 2025.

Specs

Burr38 mm heptagonal, the same geometry as the Kingrinder and 1Zpresso Q2 Heptagonal 12:43
DialClicks on the bottom. Three turns with four clicks per number gives about 120 positions 12:43
Microns per stepAbout 18 µm of burr travel per click, which is roughly 10 µm of gap 12:43 16:44
SpeedAbout 57 rpm 12:43

Starting settings

No one has shared grind settings for it yet.

Cup profile

Strengths

Weaknesses

Verdict

2025: the best value for money among the new battery grinders 12:43.

The Coffee Chronicler's take

Sources

Summarised in our own words from the creators' videos, with every point linked to the moment it comes from. Notchbook isn't affiliated with or endorsed by any of these creators, so please watch the originals for full context. Sources

Dialling in from here

Compare with other grinders in the grind size chart, or see every grinder.

Notchbook is a free app that remembers the setting that worked on your Femobook A2 for each coffee and brew method, and keeps a journal of every brew. Get it free on Google Play. The iPhone app is coming soon. More about Notchbook.