Portable Electric Coffee Grinder – Stainless Steel Burr, USB-C Rechargeable, Black, NB2024

At a Glance

Grind fresh beans at home, at your desk or on a trip without turning a hand crank. The Yozcoffee NB2024 portable electric coffee grinder pairs a CNC-machined stainless steel burr with a gear-reduced motor, a rechargeable 1000 mAh battery and a magnetic three-module body.

Load about 25 g of beans, set the numbered dial, press once and it stops on its own when the beans are done. A pour-over dose takes about a minute, and one full charge covers roughly 30 grinds of 15 g.

The black, ribbed aluminum-alloy body measures about 211 mm tall and 59 mm across (8.31 × 2.32 in), small enough for a backpack or handbag.

Key Features

• CNC six-star stainless steel burr: the burr cuts beans first, then grinds them, which reduces crushing and helps keep particle size even. In the supplier's in-house tests, fines stayed under 3% for washed coffee and under 4% for natural-process coffee.
• Dual stainless steel ball bearings: two inset bearings and an 8 mm center shaft keep the burr centered, so the grind stays steady from batch to batch.
• Slow, gear-reduced burr speed: a DC motor drives the burr through a 1:206.4 gear reduction, turning it at about 58 rpm (no load) for strong torque, low heat and a quieter grind than a high-speed blade.
• One press, auto stop: press the top button to start; the grinder stops by itself when grinding is finished.
• RIS resistance sensing: if the burr jams or meets something hard, the motor stops to protect itself and the burr.
• Magnetic three-module design: strong magnets join the motor module, the grinding chamber with built-in bean hopper, and the grounds cup. Every part separates for cleaning, so grounds have fewer places to hide.
• USB-C charging anywhere: charge from a power bank, laptop or car charger; four indicator lights show the battery level.

Grind Settings by Brew Method

Count clicks from zero, the point where the burr is fully closed. One full turn of the dial covers 24 clicks (numbered 2-24). Use these as starting points, then adjust for your beans and taste.

Espresso results also depend on your machine, basket and beans. Find zero with the grinder switched off and empty, and don't run the motor with the burr fully closed.

How to Use

1. Charge the battery. Open the port cover near the top and connect the supplied USB-C cable. The indicator lights show the charge level.
2. Open the bean hopper. Twist and lift off the top motor module.
3. Add beans. Pour in up to about 25 g of roasted whole beans, filling the hopper no more than about 80%. Very large beans fit a little less.
4. Close it up. Seat the motor module back on the grinding chamber until the magnets hold it in place.
5. Set the grind. Unscrew the grounds cup and turn the bottom dial toward FINE or COARSE, using the chart above as a starting point. Screw the cup back on.
6. Grind and brew. Press the top power button. When the grinder stops, unscrew the cup and transfer the grounds to your brewer.

For a consistent dose, pair it with our coffee scale with timer. Explore pour-over coffee gear to complete your setup.

Specifications

Model

NB2024

Product

Portable rechargeable electric burr coffee grinder

Color

Black

Materials

Aluminum-alloy body; CNC-machined stainless steel six-star burr; dual stainless steel ball bearings with an 8 mm center shaft

Bean capacity

Approx. 25 g per batch

Grind adjustment

Numbered bottom dial, 24 clicks per turn, fine to coarse

Motor

DC gear motor, 7.4 V; 1:206.4 reduction; approx. 58 ± 8 rpm burr speed (no load)

Battery

7.4 V / 1000 mAh lithium; approx. 30 grinds of 15 g per full charge

Charging port

USB-C

Operating temperature

0-50 °C (32-122 °F)

Product dimensions

Approx. 211 mm high × 59 mm diameter (8.31 × 2.32 in)

Net weight

Approx. 756 g (1.67 lb)

Package

Approx. 17.8 × 22 × 7.2 cm (7.0 × 8.7 × 2.8 in); 1.09 kg (2.40 lb) gross

Battery life, grind time and fines figures come from in-house testing and vary with beans, dose and grind setting.

In the Box

• 1 × NB2024 electric coffee grinder (motor module, grinding chamber and grounds cup)
• 1 × Cleaning brush
• 1 × Air blower
• 1 × USB-C charging cable
• 1 × Instruction guide

Cleaning & Care

Switch the grinder off and disconnect the charging cable before cleaning. Pull the three magnetic modules apart, empty the cup, then use the supplied brush and air blower to clear dry grounds from the burr, hopper and cup. Keep the motor module, charging port and burr dry; never immerse the grinder in water.

Our coffee grinder cleaning guide explains a practical dry-cleaning routine.

Frequently Asked Questions

How many beans does it hold?

About 25 g per batch, enough for one or two cups. Keep the hopper no more than about 80% full; very large beans fit slightly less.

How long does the battery last?

A full charge covers roughly 30 grinds of 15 g. Finer settings and harder beans use more power. Recharge with any USB-C source, including a power bank or laptop.

Which setting should I use?

Count clicks from zero (burr fully closed): about 0-5 for espresso-style, 13-15 for moka pot, 32-34 for pour-over and 40-42 for French press. Adjust a few clicks at a time based on taste.

Can it grind for espresso?

Settings 0-5 give an espresso-style starting range. Whether it suits your setup depends on your machine, basket, beans and recipe, so dial in gradually.

Does it stop by itself?

Yes. It stops when grinding is finished, and RIS resistance sensing also stops the motor if the burr jams or meets something hard.

How long does grinding take?

A pour-over dose takes about one minute. Finer settings take longer.

Can I wash it with water?

No. Separate the magnetic modules and clean them dry with the included brush and air blower. To compare other formats, browse our coffee grinders.