Automatic weighing coffee grinder
The HB-686Pro is a cordless, rechargeable burr coffee grinder designed for portable and home use. It combines a stainless steel conical burr, a built-in precision weighing module, and an acrylic digital display, delivering consistent grind quality from espresso to French press in a compact form factor.
Model:HB-686Pro
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Product Description
Lightweight
Good Quality
Fashion Design
Portable
Convenient Adjustment
High Quality Materials
Rechargeable
Key Specifications
| Parameter | Details |
| Rated Voltage / Power | DC 7.4V / 110W |
| Battery | 7.4V, 2600mAh (Li-ion) |
| Max. Charging Current | 2A (USB Type-C) |
| Charging Time | 150–180 min (at 1A) |
| Grinds per Full Charge | 25–35 cycles (18g beans, setting 5) |
| Grind Settings | 61 steps (0 = finest, 60 = coarsest) |
| Finest Grind Output | 50-mesh powder (>80% at setting 0) |
| Powder Container Capacity | 60 mL |
| Product Dimensions (L×W×H) | 243 × 110 × 315 mm |
| USB Cable Length | 1.5 m |
| Operating Temperature | −20°C ~ 40°C |
| Operating Humidity | 10% ~ 65% RH |
Materials & Construction
| Component | Material |
| Bean Hopper | Translucent |
| Grinding Burr | Stainless Steel |
| Main Body | ABS |
| Powder Outlet Tube | Stainless Steel |
| Powder Container | Stainless Steel |
| Weighing Module | ABS + Stainless Steel |
| Display Panel | Acrylic |
| Charging Connector | USB Type-C |
Core Features
● Precision Grind Control — 61 adjustable settings from fine espresso (50-mesh) to coarse French press.
● Built-in Scale — Integrated weighing module with digital display; set target weight by gram.
● Auto-Stop — Stops automatically when the preset weight is reached or when the hopper runs out of beans.
● Quick Weight Adjustment — Long-press the +/− keys for fast increment/decrement of target weight.
● Charge-and-Use — Supports operation while charging; LED indicator turns from flashing red (charging) to steady white (fully charged).
● Easy Cleaning — Bean hopper and powder container are dishwasher-safe and can be immersed in water.
● Safety Protection — Overheat protection (E0: mandatory 20-min cooldown after 9 min continuous use), motor stall detection, and battery/connection diagnostics via error codes E0–E6.
Durability & Quality Control
| Item | Specification |
| Battery Lifespan | Retains ≥80% capacity after 200 charge/discharge cycles |
| Total Grinding Life | ~3,000 grinding cycles (≈30 grinds per full charge) |
| Noise Level | ≤80 dB at 100 cm (front side) |
| Corrosion Resistance | Food-contact parts pass 96-hour salt spray test |
| Drop Test | Passes 0.71 m drop test (one corner, three edges, six faces) |
Packaging
| Item | Details |
| Single Unit Package | 295 × 155 × 365 mm |
| Carton (4 units/carton) | 605 × 325 × 380 mm |
| Shipping State of Charge | ≥30% battery at 7.4V |
Safety & Usage Notes
● Do not operate continuously for more than 9 minutes.
● Main unit is not washable — wipe with a dry cloth only.
● Use a standard 5V/2A charger; fast chargers are prohibited.
● Do not open the bean hopper or touch the burr while the machine is running.
● For long-term storage, recharge every 3 months to maintain battery health.
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