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Deal.ai › Compare

SUSTEAS KE-1309BT Electric Kettle vs Mainstays 1.7L Electric Kettle

Buy the SUSTEAS if you want a stainless steel interior and a built-in thermometer for tea and coffee brewing. Buy the Mainstays if you want a simple, proven kettle with a huge track record of owner reviews. The SUSTEAS has the better build where it matters, since water touches 18/8 stainless steel rather than plastic, and its thermometer is a real advantage for pour-over and green tea. The Mainstays is lighter, has a locking lid and a Strix thermostat, and its 4.6 rating comes from thousands of owners, but reviewers repeatedly note an off taste from the all-plastic body and a short lifespan.

  • Choose the SUSTEAS if you brew tea or coffee at specific temperatures and want stainless steel where the water sits.
  • Choose the Mainstays if you want a basic, lightweight kettle for boiling water and value a large base of owner reviews.

Prices

  • SUSTEAS KE-1309BT Electric Kettle: $35.99 at Amazon (checked today)
  • Mainstays 1.7L Electric Kettle: $14.84 at Walmart (checked today)
  • Difference: the Mainstays 1.7L Electric Kettle is $21.15 cheaper than the SUSTEAS KE-1309BT Electric Kettle today
SUSTEAS
SUSTEAS 1.7L Stainless Steel Electric Kettle with Thermometer (KE-1309BT)

SUSTEAS KE-1309BT Electric Kettle

SUSTEAS 1.7L Stainless Steel Electric Kettle with Thermometer (KE-1309BT)

4.8(113 ratings)
$35.99at AmazonChecked 4 h ago
See all prices and details
Visit Amazon

Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Stainless steel interior keeps water taste neutral
  • Thermometer helps hit the right temperature for tea and coffee
  • Wide opening makes filling and cleaning easier
  • 360° base, water-level window and LED indicator
  • Boil-dry protection and automatic shut-off
Cons
  • Hand wash only
  • Heavier than a plastic kettle
  • Small review base compared with the Mainstays
  • Painted finish can chip over time
Mainstays
Mainstays 1.7L Electric Kettle with Auto Shut-Off

Mainstays 1.7L Electric Kettle

Mainstays 1.7L Electric Kettle with Auto Shut-Off

4.6(4,374 ratings)
$14.84at WalmartChecked 3 h ago
See all prices and details
Visit Walmart
Pros
  • Very large owner review base
  • Light and easy to lift and pour
  • Locking lid and Strix thermostat
  • Clear side water gauge
  • Simple one-touch operation
Cons
  • Plastic interior can affect water taste
  • Some owners report plastic flaking into water
  • Owners report short lifespan
  • No temperature readout

What separates them

SUSTEAS KE-1309BT Electric KettleMainstays 1.7L Electric Kettle
Interior material18/8 stainless steel, BPA-free water-contact partsAll-plastic body with concealed heating element
Temperature readoutBuilt-in thermometer for gauging water temperatureNo thermometer; Strix thermostat only cuts off at boil
LidStandard lid, hand wash onlySafety locking lid with push-button pop-up
Weight and handlingStainless body is heavier; painted finishLight plastic body, cordless pour
Owner feedback on tasteNo reported plastic taste; steel interiorSome owners report an off taste and plastic flaking
Durability reportsLimited review base; steel interior resists wearOwners often say it lasts a year or two
Review volume4.8 from 113 ratings4.6 from 4,374 ratings
CleaningWide opening, hand washPlastic interior, hand wash

Price history

$35.99$14.62
Nov 6Nov 12
  • SUSTEAS KE-1309BT Electric Kettle: lowest $35.99 on Nov 12 at Amazon.
  • Mainstays 1.7L Electric Kettle: lowest $14.62 on Nov 10 at Mercari; $14.84 on Nov 12.

Prices at every store

SUSTEAS KE-1309BT Electric Kettle

  • susteasNew

    In stock

    $55.79Free shippingChecked 1 h ago
    Visit susteas
  • SUSTEASNew

    In stockReturn policy

    $55.79Checked 1 h ago
    Visit SUSTEAS
  • eBayNew

    In stockSold by jxlltd

    $68.19Free shippingChecked 4 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $35.99Free shippingChecked 4 h ago
    Visit Amazon

Store links may earn us a commission.

All 5 stores and price history →

Mainstays 1.7L Electric Kettle

  • WalmartNew

    In stock

    $14.84Checked 3 h ago
    Visit Walmart
  • PoshmarkNew

    In stock

    $20.00+ $6.49 shippingChecked Nov 10
    Visit Poshmark
  • Brands For Less USANew

    In stock

    $26.83Free shippingChecked Nov 10
    Visit Brands For Less USA
  • eBayNew

    Availability unknownSold by midnightnostalgic (100% positive, 12 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $24.99+ $7.68 shippingChecked Nov 10
    Visit eBay

Also available at

  • WalmartCheck price at Walmart
  • eBayCheck price at eBay

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All 5 stores and price history →

Specs compared

SpecSUSTEAS KE-1309BT Electric KettleMainstays 1.7L Electric Kettle
Capacity1.7 liters1.7 L
Power1500W120V/60Hz/1500W
Included Componentslid & baseRemovable nylon filter, Detachable base
Boil Time5-6 minutes—
Interior Material18/8 stainless steel—
Product Dimensions8.07"L x 6.1"W x 10.03"H—
Special FeatureBoil Dry Protection, Automatic Shut-Off—
Finish TypePainted—
Product Care InstructionsHand Wash—
Country of OriginChina—
Model1309BT—
color—White
Show all 40 specsShow fewer specs
SpecSUSTEAS KE-1309BT Electric KettleMainstays 1.7L Electric Kettle
actual_color—White
Max capacity—1.7 Liter
Indicator light—Orange indicator light
Water gauge—external semi-transparent water gage
Auto shut-off—Automatic shut off and boil dry protection
Lid—Safety locking lid
Base rotation—360 degree rotation
Cordless design—Cordless, detach from base for ease of use
Heating element—Concealed heating element

What reviewers say

SUSTEAS KE-1309BT Electric Kettle

  • 4.8 / 5113 ratings

Owners rate it highly, at 4.8 out of 5 from 113 ratings. They like the vintage look and the thermometer for tea and coffee, and report it boils reliably.

What people mention
  • ThermometerPraisedOwners say the gauge helps them hit the right temperature for tea and coffee instead of guessing.
  • BuildPraisedBuyers describe the stainless steel body as solid and well made.
  • DesignPraisedThe vintage look is a common reason people pick it over plain kettles.
  • Boil timeMixedSome find a full 1.7-liter boil takes longer than they expected.

Mainstays 1.7L Electric Kettle

  • 4.6 / 54,374 ratings

With 4.6 out of 5 from 4,374 ratings, owners mostly treat this as a cheap kettle that does the job. Praise centers on price, fast boiling for the money and the auto shut-off. Complaints tend to be about plastic taste and build feel.

What people mention
  • ValuePraisedOwners say it costs little and does the basic job of boiling water.
  • Boil speedPraisedReviewers find it fast enough for a full 1.7L fill in normal use.
  • Plastic tasteCriticisedSome buyers report a plastic smell or taste in the first few boils.

Questions and answers

Which is better for tea and coffee?
The SUSTEAS. Its thermometer lets you stop before a full boil for green tea or pour-over coffee. The Mainstays only boils and shuts off.
Which lasts longer?
The SUSTEAS is the safer bet. Its stainless interior resists wear, while Mainstays owners often report replacing the kettle within a year or two.
Does the plastic body affect water taste?
For the Mainstays, some owners say yes and report an off taste. The SUSTEAS uses 18/8 stainless steel where water sits, so taste stays neutral.
Is the SUSTEAS worth stepping up to?
If you care about temperature control and a steel interior, yes. If you just want fast boiling water, the Mainstays covers that.
Do both shut off automatically?
Yes. Both have auto shut-off and boil-dry protection. The Mainstays adds a locking lid and a Strix thermostat.
Which is easier to clean?
Both are hand wash only. The SUSTEAS has a wider opening, which makes wiping the interior easier.

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  • Cosori 1.7L Stainless Steel Electric Kettle SE152 vs Mainstays 1.7L Electric Kettle with Auto Shut-Off

Buying guides that pick them

  • Best electric kettles with automatic shut-off
Width (")
—
9.06
Power (W)—1500
Type of Kettle—Electric Kettle
Height (")—8.66
Voltage (V)—120.0
Features—Water Meter, Automatic Shut-Off, Hidden Heating…
Material—Plastic
Depth (")—6.3
Capacity (gal)—0.45
Body Material—Plastic
Cup Capacity—5
Water Capacity—1.7-Liter
Beverage Type Supported—Hot beverage
Heating Type—Electric
Temperature Control—Yes (STRIX thermostat control)
Thermostat—Yes (STRIX thermostat control)
Type—Kettle
Style—Kettle
Subtype—Electric Kettle
Build quality
Mixed
It feels light and plasticky, though most accept that at this price.