- Burr Type: Six-axis precision grinding burr
- Battery: 800mAh rechargeable lithium
- Charging: USB Type-C
- Grind Capacity: Approx. 0.53 oz (15g) per dose
- Battery Life: 20-30 grinds per charge (up to 25 days)
- Lid: Magnetic spill-proof design
- Available Colors: Green, Black, White
F.A.Q.
Great question! The Mini Rui is designed to handle a wide range of brew methods, from fine espresso grinds to coarser settings for pour-over and AeroPress. The six-axis burr delivers uniform particle size at each setting, so you can confidently switch between methods without sacrificing extraction quality. It is a genuinely versatile grinder for any coffee lover who brews more than one way.
On a full charge, the 800mAh lithium battery can grind approximately 15g (approx. 0.53 oz) of coffee beans between 20 and 30 times. For most single-cup brewers, that translates to roughly 25 days of daily use before you need to recharge. When you do, just plug in any standard USB Type-C cable and you are back in business quickly.
Absolutely. The six-axis grinding burr inside the Mini Rui is engineered for consistent particle size distribution, which is the single biggest factor in clean, balanced extraction. While it is built for portability, the grind uniformity holds up impressively well against larger countertop grinders. You will notice a real difference compared to blade grinders or pre-ground coffee, especially in espresso.
It works beautifully for both! Many home baristas use the Mini Rui as their daily driver, especially in smaller kitchens where counter space is limited. Its palm-sized footprint takes up virtually no room, and the battery life easily handles everyday use. Think of it as a travel grinder that earns a permanent spot on your coffee station at home too.
Keeping your Mini Rui in top shape is simple. After each grind session, use a small brush to sweep residual grounds from the burrs and grinding chamber. Wipe the exterior with a dry or slightly damp cloth. Avoid running water over the motor or battery area. The magnetic lid detaches easily for quick access during cleaning, making maintenance fast and hassle-free.
Shipping & Delivery
Absolutely. Every espresso machine, grinder, and accessory is packed with the same precision we put into designing them. We use reinforced boxes and protective cushioning specifically tested for coffee equipment—because a damaged tamper or chipped machine housing isn't acceptable.
In the rare event your portafilter, grinder, or machine arrives damaged, our support team will sort it immediately with a replacement or full refund. No runaround.
Processing time: 1–3 business days
(Most orders ship within 24 hours—we know you're eager to dial in your shots)
Delivery time: 3–12 business days depending on your location
You'll receive real-time tracking from our warehouse to your kitchen counter. Watch your setup come together, step by step.

