Acaia Lunar Water-Resistant Espresso Scale (2021)

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  • Acaia Lunar (2021 | Black)
  • Acaia Lunar (2021 | Silver)


WARNING: This product can expose you to chemicals including Nickel (Metallic), which is known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to

  • What's in the Box

  • Acaia Lunar (2021 Version)
  • Heat-Resistant Pad
  • Calibration Weight (100g)
  • USB Type-C Charging Cable
Acaia Lunar 2021
Acaia Lunar 2021 Model

Accuracy, Efficiency, & Precision

Acaia has been setting the bar for coffee brewing scales for years, and now they are reintroducing an award-winning design: the Lunar. The new, 2021 version of the Lunar presents several improvements from Acaia’s previous iteration of this professional-grade scale while maintaining all of the original features that made it the professional barista’s scale of choice. A few of the upgrades come as a real-time flow-rate indicator, customizable espresso workflow parameters, faster response times, and an optional readability of 0.01g for ultimate efficiency and the highest precision.

Flow-Rate Indicator

Measure Espresso in Real Time

Acaia’s Real-Time Flow-Rate indicator is shown as an LED bar at the top of the display, allowing you to visualize the flow rate of your espresso and spot channeling while brewing. Small, circular LEDs measure your flow rate with the first LED representing 0.1g per second on the left and 3.4g per second on the right. If the flow-rate of your espresso exceeds 5g per second, the last three LEDs will light up with enhanced brightness, signifying a high flow rate and possible channeling or erosion of the coffee puck. This feature adds a new layer of efficiency to the Lunar, aiding in dialing in your espresso and your puck preparation routine.

Adjusting the Lunar

New Weighing & Brewing Modes

Among its many upgrades, the 2021 Lunar showcases a variety of new weighing and brewing modes to further simplify your workflow. A dual display mode shows the weight being applied to the scale and a timer, making tracking your espresso shots simpler than ever. Another beneficial mode for brewing is the Automatic-Tare, Automatic-Start mode, which enables the scale to recognize when the first drop of espresso has fallen and automatically activates your timer. A dosing, or Automatic-Tare mode, simplifies the repetitive weighing of coffee. While in this mode, the Lunar automatically detects your vessel, be it portafilter or dosing cup, then automatically tares the scale back to zero. This feature is especially useful when weighing back-to-back doses.


    Water-Resistant Aluminum Surface


    Six Modes for Espresso Weighing & Brewing


    30 Hours of Battery Life


    Bluetooth Connectivity Capability

More Features

Fast, Sensitive, & Responsive

Real-Time Flow-Rate Indicator

Customizable Espresso Workflow Parameters

Fits Virtually Any Drip Tray

New, Brighter LED Display


Manufacturer: Acaia
Model: Lunar 2021
Available Colors: Black | Silver
Maximum Capacity: 2000g
Readability: Down to 0.01g
Battery: Lithium-ion Rechargeable | 3.7V 1100 mAh
Battery Life: Up to 30 Hours
Product Dimensions: 4.15" (W) x 0.6" (H) x 4.15" (D)
Product Weight: 9.3 oz | 265g

Suggested Resources

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    A Comparison of Brewing Scales

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  • Espresso 101: How Do I Get Started With Espresso?

    Espresso 101: How Do I Get Started With Espresso?

    Get started in the alluring world of home espresso with this helpful guide - full of tips for exploring what equipment to buy, how to set a budget, and where you can go beyond beginner gear.

  • The Art and Science of Tamping

    The Art and Science of Tamping

    Received wisdom is just that: wisdom received from others. But who are the others and what makes them credible sources? Does what they say amount to wisdom or something else?

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Warranty Information

2 Year Manuafacturer's Warranty
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