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Ninja

Ninja Blast Max, Portable Blender + Twist & Go, Personal Smoothie, Blend, Ice Crush, 3…

  • Personal Size Blender
  • 22 fl oz
  • Battery
  • Programmable, Touch
4.3/ 5 on Amazon318Amazon ratings4.1ProductDome score
Medium confidenceLast refreshed Jun 13, 2026Amazon data + ProductDome analysis · methodology
Best forYou want to blend a smoothie away from a power outlet and are fine with a 22-ounce single-serving capacity

A capable cordless blender for single smoothies away from an outlet, though a battery that needs frequent recharging and at least one overheating report are worth weighing against a corded alternative.

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ProductDome scorecard

How it ranks among the 21 personal size blenders we track

4.1/ 5ProductDome scoreMedium confidence
Owner satisfaction · 63% of scorecategory median 4.3★4.3

4.3★ across 318 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 19% of scorecategory median 522 ratings3.1

318 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Data quality · 13% of score5.0

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 21 personal size blenders we track - how the scorecard works · full personal size blenders data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 13, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

A cordless personal blender with a detachable 22-ounce vessel that twists off the rechargeable base for sipping on the go, running three preset programs for smoothies, crushing, and blending.

The base is what sets this apart from a corded personal blender: a full charge takes about 3 hours and a battery indicator shows remaining charge. The blade sits built into the vessel itself, so pre-blended drinks can go straight into the fridge without staying attached to the motor.

  • 22 oz detachable Twist & Go vessel
  • 3 Auto IQ programs: smoothie, crush, blend
  • Rechargeable base, about 3 hours to full charge
  • Lid and vessel are top-rack dishwasher safe

Who it's for

People who want to blend a smoothie or shake away from an outlet, whether that is a gym bag, a car, or a campsite, and who are fine with a single-serving 22-ounce capacity. Not for anyone blending large batches or needing continuous runtime without recharging.

What buyers say

From Amazon customer reviews.

Owners traveling or commuting like that it crushes ice and frozen fruit cordless and that the cup detaches for sipping or storage, but recurring complaints include the battery needing a recharge every couple of days and one report of the unit overheating and becoming unusable after a few weeks.

Strengths and trade-offs

Drawn from this product's published specifications.

What to check first
  • Battery needs recharging every few days with regular use
  • Plastic vessel can be harder to keep clean than glass
  • At least one report of the unit overheating after weeks of use

Specifications

BrandNinja
ModelBC251SL
Dimensions & fit
Item Weight2.6 pounds
Item Dimensions D x W x H4.6 × 3.6 × 12.8 inches
Capacity & performance
Capacity22 fl oz
Power & efficiency
Power SourceBattery
Voltage11.1 volts
Construction & materials
Container MaterialPlastic
MaterialPlastic
Material Type FreeBPA Free
Blade MaterialStainless Steel
ColorSilver
Included components
Unit Count1
Included Components11.1V rechargeable motor base, 22oz. Twist & Go vessel with built-in CrushBlade, Charging Cable, Easy-Open Sip Lid with Carrying handle
Warranty & support
Warranty TypeLimited
Other details
Control TypeProgrammable, Touch
Container Count1
Is the item dishwasher safeYes
Other Special Features of the ProductCompact, Cordless, Dishwasher Safe, Lightweight, Portable
Recommended Uses For ProductBlending, Emulsifying, Ice Crush, Mixing, Protein
Part NumberBC251SL
StylePersonal Blender
Item Type NameBlender, Blast Max, Cordless, Personal Blender for Smoothies, Frozen Drinks, Ice Crush, 22 oz. Removable Vessel, Leakproof Lid, BPA-Free, Dishwasher Safe, Auto-iQ Technology, Silver

How it compares

This product against the closest alternatives we track in personal size blenders.

ProductAmazon ratingRatingsProductDome score
Ninja Blast Max, Portable Blender + Twist & Go, Personal Smoothie, Blend, Ice Crush, 3…This product4.3 / 53184.1 / 5
Nutribullet Pro1000 Light GrayNutriBullet4.6 / 54,8004.5 / 5
Magic Bullet MBR-1701 17-Piece Express Mixing SetMagic Bullet4.4 / 55,3004.4 / 5
KOIOS Smoothie BlenderKOIOS4.4 / 53,9774.2 / 5
Elite Gourmet EPB-1800A# 17-Piece Personal Drink Mixer BlenderElite Gourmet4.0 / 53,6004.1 / 5
Frequently asked

Questions about the Ninja BC251SL

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

How long does the Ninja Blast Max battery last on a charge?

Ninja rates a full charge at about 3 hours, and several owners report the battery itself needs a recharge every couple of days with regular daily use.

Can the Ninja Blast Max vessel go in the fridge?

Yes, because the blade is built into the 22-ounce vessel rather than the base, it can detach and be stored or carried separately.

Is the Ninja Blast Max dishwasher safe?

The lid and vessel are top-rack dishwasher safe; the motor base should not be submerged.