Geimori T38 Grinder: My Honest Review
Portable, pro-grade performance for coffee lovers anywhere
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Transparency Note: Wirsh kindly sent me the Geimori T38 grinder to test and review.
The Geimori T38
The Geimori T38 positions itself as a true pro‑grade portable coffee grinder—a bold claim in a market crowded with travel grinders. I’ve been using the T38 in everyday brewing, travel scenarios, and across multiple brew methods to see how it really performs.
This review covers who this grinder is for (and who it’s not), real‑world performance, pros and cons, and whether it’s actually worth adding to your coffee setup.
At a Glance
- Size: 7.3 inches tall (it’s small!)
- Burrs: 38 mm stainless steel conical burrs
- Adjustment: 80 settings allowing for 0.01mm microadjustments
- Battery: 3600 mAh rechargeable battery
- Charging: USB‑C
- Power: Cordless electric
- Best for: Espresso, pour‑over, drip, travel brewing, limited spaces
What Is the Geimori T38?
The Geimori T38 is a cordless electric burr grinder designed for coffee drinkers who want high‑quality grinding without being tied to a countertop or power outlet. Unlike many portable grinders that feel like a compromise, the T38 aims to deliver serious grind quality in a compact, travel‑friendly form.
With 38 mm conical burrs, stepless grind adjustment, and a large rechargeable battery, it’s built to handle everything from daily home brewing to weekend camping trips.
Unboxing & First Impressions
Right away, the T38 feels intentional. The build is solid, the components feel well‑made, and nothing about it feels cheap or disposable. This is not a grinder that feels like an afterthought—it feels designed for long‑term use.
Setup is simple, intuitive, and beginner‑friendly, which makes it approachable even if you’re newer to grinding fresh coffee at home.
Design & Build Quality
The Geimori T38 strikes a strong balance between durability and portability.
- Compact & travel‑ready: Easy to pack, easy to store, and doesn’t take up unnecessary counter space.
- Sustainable and durable construction: The T38 is designed without plastic and is constructed with aluminum alloy and SUS420 stainless steel.
- Aesthetics: The T38 comes in white, silver, or black, and is topped off with the accented lid made from solid walnut wood.
- Easy maintenance: Low retention and removable parts make cleaning quick and painless—especially helpful if you rotate beans often.
Performance & Daily Use
Grind Quality
For a portable electric grinder, the T38 delivers impressively consistent results. The stepless grind adjustment allows for precise control, making it easy to dial in for different brew methods.
Battery Life & Charging
The 3600 mAh battery is a standout feature. In regular use, I was able to go many days—and several brew sessions—without needing to recharge.
Wirsh claims “the T38 delivers up to 15 grams of coffee 80+ doses on a single charge” — and I don’t doubt it.
USB‑C charging makes it convenient and future‑proof, especially for travel when you don’t want to pack extra cables.
Noise & Speed
The grinder isn’t silent, but it’s honestly the quietest grinder I’ve ever owned.
Grind speed varies depending on the setting, with finer grinds and bigger doses taking longer. The motor was observed as very consistent and reliable for each grinding period.
When grinding for espresso, it took about a minute for 9 grams of beans to be ground and about a minute and a half for 18 grams. Of course the timing will vary depending on the characteristics of your beans, so make sure to have fun and experiment to find out what works best for you and your preferred coffee beans.
Digital Display
There is a digital display right above the power button, making it easy to check the grinder’s battery percentage with a single click of the power button.
When you begin grinding (two clicks of the power button), the display switches to a grind timer. This small feature makes a big difference in daily brewing, helping you dial in more easily and repeat grind times for more consistent results cup after cup.
Cleanliness
One thing I really appreciate about the Geimori T38 is how clean it is to use—especially for a portable electric grinder. The low-retention design means very little coffee is left behind after grinding, which helps keep flavors from mixing when you switch beans.
The grounds fall neatly into the magnetic catch cup with minimal mess, and I rarely notice stray fines on the counter. When it comes time to clean, the grinder is easy to disassemble without tools, making it simple to brush out residual grounds and keep everything fresh.
Real‑World Use
Home Brewing
In a home setup, the T38 works well as a daily driver—especially if counter space is limited. It’s quick to grab, easy to adjust, and simple to store when not in use.
Travel & On‑the‑Go
This is where the T38 really shines. Whether you’re traveling, camping, or brewing away from home, it delivers fresh‑ground coffee without the hassle of manual grinding or searching for an outlet.
Wirsh also offers a portable travel bag for separate purchase, which would be a great investment when you need something to transport with.
Who This Grinder Is For
- Coffee lovers who value freshly ground coffee anywhere
- Travelers, campers, and van‑life brewers
- Home brewers with limited counter space
- Anyone wanting electric convenience without sacrificing quality
Who It’s Not For
- Baristas chasing absolute espresso perfection with high‑end machines
- Those who only brew at home and prefer large, dedicated grinders
- Anyone who regularly needs to grind large doses or keep up with continual high demand
- Anyone looking for the cheapest possible grinder (though it’s worth noting that when I was writing this post, the grinder was 50% off, so deals do happen!)
Pros & Cons
Pros
- High‑quality, durable build
- Consistent grind performance across brew methods
- Long‑lasting battery with USB‑C charging
- Stepless adjustment for precision
- Truly portable and practical
Cons
- Not a full replacement for premium espresso grinders
- Finer grind settings take more time
- Higher price than manual travel grinders
Use code COFFEECOLLECT10 for an exclusive 10% off on your purchase!
I love being able to share deals like this with our coffee community — enjoy! 🙂
Final Thoughts
The Geimori T38 successfully delivers what it promises: pro‑grade performance in a portable, cordless design. It’s not trying to replace a top‑tier café grinder—and it doesn’t need to. Instead, it fills an important gap for coffee lovers who want quality, flexibility, and freedom in how and where they brew.
If you want a grinder that can keep up with your daily routines and also your adventures, the Geimori T38 is a strong, well‑rounded choice that I feel comfortable recommending.
Catch me using this grinder during my daily routines and adventures on Instagram @the.coffee.collect!
-the coffee collect.
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