Introduction
The Ninja TWISTi High-Speed Blender DUO is engineered to deliver exceptionally smooth purees and fine blends. Featuring a powerful 1600 Peak-Watt motor and innovative Hybrid-Edge high-speed blades, it handles tough ingredients with ease, eliminating the need for stalling, stirring, or shaking. Its unique built-in Twist Tamper actively pushes ingredients down towards the blades, ensuring consistent and thick results, ideal for creations like smoothie bowls and nut butters.

Figure 1: The Ninja SS151 TWISTi Blender DUO, showcasing the main blender pitcher, motor base, and two portable to-go cups. The pitcher is filled with berries and the to-go cup with a green smoothie, demonstrating its versatility.
Setup and Assembly
Before first use, ensure all components are clean. The Ninja TWISTi Blender DUO comes with a 1600 Peak-Watt Motor Base, a 34 Oz. Power Pitcher, and two Single Serve Cups (24 Oz. and 18 Oz.) with lids. The Hybrid-Edge Blades Assembly is designed for easy attachment.
Initial Cleaning
- Wash all containers, lids, and blade assemblies with warm, soapy water before initial use.
- Rinse thoroughly and dry all parts.
- The motor base should be wiped clean with a damp cloth only. Do not immerse the motor base in water.
Assembling the Blender
- Place the motor base on a clean, dry, and level surface. Ensure the suction cups on the bottom firmly grip the counter for stability.
- For the Power Pitcher: Place the pitcher onto the motor base, aligning the handle with the front of the base. Twist clockwise until it clicks into place.
- For Single Serve Cups: Place the desired cup onto the motor base, aligning the tabs on the cup with the slots on the base. Twist clockwise until it locks securely.
- Attach the Hybrid-Edge Blades Assembly to the bottom of the Power Pitcher or Single Serve Cup by twisting it clockwise until it is tightly sealed.
- For the Power Pitcher, ensure the lid with the built-in Twist Tamper is securely placed on top and locked into position.

Figure 2: The Ninja SS151 TWISTi Blender DUO set up on a kitchen counter, showing the main pitcher, motor base, and two single-serve cups, ready for use.
Operating Instructions
The Ninja TWISTi Blender DUO offers versatile functions for various blending needs, controlled by its intuitive interface.
Control Panel Overview

Figure 3: Detailed view of the blender's control panel, highlighting the "Start/Stop" and "Pulse" buttons, along with five preset programs: "Extract," "Smoothie," "Frozen" (for drinkable textures), and "Spread," "Bowl" (for spoonable textures).
- Start/Stop: Manually start or stop any blending cycle.
- Pulse: Provides short bursts of power for chopping or quick blending.
- Auto-IQ Programs: Pre-set programs designed for specific textures and ingredients.
- Drinkable:
- Extract: For nutrient extractions from fruits and vegetables.
- Smoothie: For smooth, drinkable smoothies.
- Frozen: For frozen drinks and crushed ice.
- Spoonable:
- Spread: For nut butters and other thick spreads.
- Bowl: For thick smoothie bowls.
- Drinkable:
Using the Twist Tamper (Power Pitcher Only)
The built-in Twist Tamper is crucial for processing thick mixtures like nut butters and smoothie bowls. While blending, continuously twist the tamper counter-clockwise to push ingredients down towards the blades, ensuring no stalling and a perfectly smooth result.

Figure 4: Demonstrating the use of the Twist Tamper to process ingredients for nut butter, ensuring all contents are pushed towards the blades for optimal blending.
Adding Ingredients During Blending (Drizzle Cap)
The removable drizzle cap on the Power Pitcher lid allows you to add liquids or small ingredients while the blender is operating, enabling real-time customization of flavors and textures.

Figure 5: A user adding liquid ingredients through the drizzle cap on the Power Pitcher, allowing for adjustments during the blending process without stopping the machine.
Maintenance and Cleaning
Proper maintenance ensures the longevity and optimal performance of your Ninja TWISTi Blender DUO.
Cleaning Instructions
- Dishwasher Safe Parts: All containers, lids, and blade assemblies are dishwasher safe. Place them on the top rack for best results.
- Hand Washing: For hand washing, use warm, soapy water and a non-abrasive sponge or brush. Exercise caution when handling the sharp blades.
- Motor Base: Wipe the motor base clean with a damp cloth. Do not submerge the motor base in water or spray it with water.
- Stubborn Residue: For stubborn residue, fill the container with warm water and a drop of dish soap. Run the blender on a low setting for a few seconds, then rinse thoroughly.

Figure 6: Various components of the Ninja TWISTi Blender DUO, including containers, lids, and blade assemblies, placed in a dishwasher rack, illustrating their dishwasher-safe design for convenient cleaning.
Troubleshooting
If you encounter issues with your Ninja TWISTi Blender DUO, refer to the following common troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| Blender does not turn on. | Not plugged in; container/lid not properly assembled. | Ensure unit is plugged into a working outlet. Verify container and lid are securely locked into place. |
| Ingredients are not blending smoothly. | Too many ingredients; insufficient liquid; ingredients stuck. | Reduce ingredient quantity. Add more liquid. For Power Pitcher, use the Twist Tamper. For cups, shake the cup. |
| Unit stops during operation. | Overheating due to heavy load. | Unplug the unit and allow it to cool for at least 15 minutes. Reduce load before restarting. |
| Leaking from container. | Lid or blade assembly not sealed properly. | Ensure lid and blade assembly are twisted on tightly and securely. Do not overfill past MAX FILL line. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Ninja |
| Model Number | SS151 |
| Power Source | Corded Electric |
| Voltage | 120 Volts |
| Peak Wattage | 1600 WP |
| Capacity (Power Pitcher) | 34 Fluid Ounces |
| Included Components | Motor Base, 34 Oz. Power Pitcher, 24 Oz. Single Serve Cup, 18 Oz. Nutrient Extraction Single Serve Cup, Hybrid-Edge Blades Assembly, Lids, 10-Recipe Inspiration Guide |
| Special Feature | Dishwasher Safe, Built-in Twist Tamper, Auto-IQ Technology |
| Material Type Free | BPA Free |
| Blade Material | Stainless Steel |
| Product Dimensions | 6.5"D x 8.3"W x 13.8"H |
| Item Weight | 7.19 pounds |
| UPC | 622356589246 |
Warranty and Support
The Ninja SS151 TWISTi Blender DUO comes with a Limited Warranty. For specific warranty details, including coverage period and terms, please refer to the warranty information provided in your product packaging or contact Ninja customer support.
Customer Support
For technical assistance, troubleshooting, or warranty claims, please visit the official Ninja website or contact their customer service line. Keep your purchase receipt and product model number (SS151) readily available for faster service.
You can also find additional resources and recipes on the Ninja Store on Amazon.







