A rechargeable grinder can suit a small kitchen or a coffee kit that moves between home and work. Check that its load size and adjustment range fit your usual drink before choosing it for the convenience of USB-C.
The Yozcoffee USB-C rechargeable coffee grinder uses a ceramic conical burr and 38 external settings, with a 25 g hopper and a detachable grounds bin. This guide explains how to record and adjust the setting for your own coffee.
38-setting ceramic or 35-setting steel grinder?
These are two separate USB-C rechargeable grinders in the Yozcoffee range. The comparison below uses their current listed specifications, not a timed grinding or taste test.
| Check | 38-setting ceramic model | 35-setting steel model |
|---|---|---|
| Product | 38-setting ceramic-burr grinder | 35-setting steel-burr grinder |
| Bean hopper | Approximately 25 g | Approximately 25 g |
| Grounds collection | 50 g detachable grounds cup | 120 mL magnetic grounds cup; volume is not bean weight |
| Listed size and weight | 70 × 195 mm; approximately 430 g | 250 × 73 mm; approximately 512 g |
| Power | USB-C rechargeable; 2000 mAh battery | USB-C rechargeable; 7.4 V internal battery |
Choose the ceramic model if its lower listed weight and shorter body suit your kit. Choose the steel model if you prefer its steel burr and magnetic grounds cup. Setting counts do not reveal step size or prove espresso performance; neither listing establishes compatibility with every non-pressurized basket. For recipes above 25 g, plan separate loads with either model.
Already need a filter and cup as well? The portable grinder and pour-over kit combines those pieces, but brewing remains manual and requires separately heated water.
What this rechargeable grinder is designed to do
At 7 cm wide and 19.5 cm tall, it takes up about the counter width of a narrow travel mug and stands shorter than most kettles. The listed net weight is 430 g — fine for an office shelf, an RV cabinet or a carefully packed travel kit, and too heavy to call pocket-sized.
The 25 g hopper limits each load. A larger grounds bin can collect multiple batches, but it does not increase the hopper capacity.
The listing gives a 2000 mAh battery and includes a USB-C cable, but does not specify a dependable number of grinds per charge. Plan charging before travel rather than relying on an assumed batch count.
The key specifications at a glance
| Feature | Product specification | What it means in practice |
|---|---|---|
| Burr | Ceramic conical burr | Grinds through an adjustable burr gap; the listing does not quantify particle-size distribution |
| Adjustment | 38 external steps | Change the setting without opening the hopper or dismantling anything |
| Bean hopper | 25 g | Up to 25 g per load; larger recipes need separate batches |
| Grounds bin | 50 g, transparent, detachable | You can see the dose land and tip it straight into the brewer |
| Battery | 2000 mAh lithium, USB-C rechargeable | Cordless operation; charging cable included, wall adapter not |
| Power | 30 W | Listed motor power, which says nothing about grind quality |
| Size | 7 × 19.5 cm | Narrow enough for a crowded counter or a packing cube |
| Net weight | 430 g | Portable, and heavier than a manual travel grinder |
| Colors | Milk Tea or Black | Two finishes, identical mechanism |
How to use the 38 grind settings
The adjustment ring sits on the outside, so you can read the setting before you add beans and move one step without taking the hopper apart. The product guide divides the dial like this:
| Dial range | Suggested brew method |
|---|---|
| 1–6 | Espresso-fine range |
| 6–12 | Moka pot |
| 12–18 | Pour-over |
| 18–28 | Drip coffee |
| 28–38 | French press or cold brew |
Use the bands as starting points. Beans, filters and batch sizes all affect the result, so another person's number may need adjusting.
Setting 15 is the sensible first move for pour-over, sitting mid-range. Brew one cup with a dose and water weight you can repeat, then read the result:
- Drains fast, tastes thin and sharply sour — go finer, one or two steps.
- Drains slowly, tastes dry, harsh or hollow at the finish — go coarser.
- Jump five steps and you lose the thread. You will not know which change did what.
Hold the dose, water weight, temperature and pour pattern still while you move the dial. Changing two things at once makes their effects harder to separate. The guide to 40 stepped settings on a manual grinder explains the same process: record the setting and compare one adjustment at a time.
Can a portable electric grinder work for espresso?
The guide assigns settings 1–6 to espresso-style brewing. Whether they suit your setup depends on the basket and how much adjustment the recipe needs.
Non-pressurized espresso can require very small grind changes. Test whether the stepped settings give enough control for your basket, keeping dose and target yield steady.
Pressurized baskets can tolerate a wider range of grinds. For a non-pressurized basket, check that the grinder offers sufficiently fine adjustment for your machine and recipe. A larger number of settings or hopper size alone does not prove espresso suitability. Choose this portable model around its documented small-batch specifications, not an assumed ability to dial in every espresso setup.
A practical office or travel workflow
Count the rest of the kit as well: brewer, coffee, cup, any filters and a hot-water source.
- Weigh the beans before loading. Filling the hopper by eye is how you end up with 22 g of grounds for a 15 g recipe.
- Check the ring. An external dial is easy to knock while packing or wiping the body, and you will not notice until the cup tastes wrong.
- Line up the lock marks. The body and grounds bin have to seat properly before the button does anything.
- Start the grinding cycle as directed. The listed auto-stop function ends the cycle; follow the model's button instructions.
- Tip the grounds out right away. The clear bin lets you confirm the dose landed before you commit water to it.
- Brush it out while the grounds are dry. Ten seconds now beats scraping compacted fines out of the outlet next week — the same reason regular grinder cleaning matters more than a deep clean twice a year.
Charging and care without damaging the motor body
The detachable grounds bin is listed as rinseable. The powered body is not, so keep the motor, battery and charging port dry.
Brush accessible residue away as instructed. Rinse only approved washable parts and dry them completely before reassembly. Use the supplied care instructions for anything that needs disassembly.
Charge on a dry surface with a cable and power source that meet the manufacturer's electrical requirements. USB-C identifies the connector; it does not confirm that every charger is suitable.
Who this grinder fits—and who may want something larger
This format suits small batches where permanent counter space is limited. If you switch brewing methods, record a starting setting for each and expect to refine it when the beans change.
Specifically:
- an office pour-over setup with no free outlet;
- a small apartment where the coffee lives on one shelf;
- hotel and long-term nomad kits where luggage volume decides everything;
- anyone who prefers electric grinding to hand cranking;
- a household that changes method often and wants the dial on the outside.
Compare a larger or more specialized grinder if you regularly exceed the load limit or need finer espresso adjustment. A 40-setting manual burr grinder is an option when avoiding charging matters. The portable grinder and brewer comparison and wider burr grinder range can help compare the formats.
A simple starting recipe for pour-over
Treat this as a calibration brew rather than a recipe that suits every bean:
- 16 g coffee
- 250 g water at 93 °C (199 °F)
- setting 15
- your usual dripper and filter
- the same pour every time
Taste the cup and record drawdown. If it drains unusually fast and tastes thin, try one step finer; if it drags and tastes drying, try one step coarser. Compare at the same dose and water weight.
Write the successful setting on the bag or in a recipe note. Revisit it when the flavor or flow changes, without assuming the beans will need an adjustment in a fixed direction.
Charging and packing
Choose a setting, measure a dose and keep a note of the result. Clean the removable bin and charge between sessions so the grinder is ready when you need it.
If that matches how you brew, check both color options and the full specification list before ordering. If you are packing it for trips, compare it against the rest of the portable brewing range so the kit actually fits together in one case.
