Head-to-head · Best Cordless Stick Vacuums

Shark Cordless Detect Pro IW3511 vs Shark Stratos Cordless Vacuum

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Shark Stratos Cordless Vacuum comes out ahead by a clear margin (4.2 vs 3.2). Shark Stratos Cordless Vacuum is best for: mixed-floor homes, especially mostly hard floors, that want strong pickup and a long-running battery. Read the strengths below before deciding.

Ranked #5 in Best Cordless Stick Vacuums

Shark Cordless Detect Pro IW3511

3.2

3 sources

No serious cordless on this list is lighter than the Cordless Detect Pro, and it ships with the only auto-emptying base in the under-$500 tier. Shark trades raw suction for usability: less power, but smart-sensor automation and a hands-off base that hides emptying for up to 30 days. Buyers who hate touching dustbins and want a featherweight wand for stairs should start here.

Strengths

— Under 4 lbs at the handle, the lightest full-size cordless reviewed
— 60-minute Eco runtime is competitive with the Dyson V15 at half the price
— QuadClean multi-surface brushroll switches modes between hardwood and carpet without head swapping

Watch-outs

— Suction maxes at 120 AW, half the Dyson V15's 240 AW
— Boost mode runs the battery flat in under 15 minutes
— Base model ships with only a crevice tool; other accessories are sold separately

Buy at bestbuy.com Full review →

Higher ratedRanked #1 in Best Cordless Stick Vacuums

Shark Stratos Cordless Vacuum

4.2

3 sources$470as of Oct 17

The Shark Stratos (IZ862H) is a cordless stick vacuum with a two-roller DuoClean head, automatic Clean Sense IQ suction, a HEPA filter and a removable battery, weighing about 8.9 pounds. CNET named it its best overall cordless vacuum after it picked up 95% of sand on average across hardwood and carpet, Vacuum Wars recorded the first perfect 100 in its carpet deep-clean test, and TechGearLab found it a standout on hardwood. Reviewers agree it is heavy, Homes & Gardens and TechGearLab disliked the scent cartridge, and TechGearLab found it weaker on thick rugs. It suits mixed-floor homes, especially those with mostly hard floors; people who want a light handheld or a self-emptying dock should look elsewhere.

Strengths

— First cordless to score a perfect 100 in Vacuum Wars' embedded-sand carpet test
— Standout hard-floor cleaner, picking up 97% of debris on hardwood in TechGearLab's test
— Long runtime: CNET measured 80 minutes on medium suction

Watch-outs

— Heavy at about 8.9 lb, tiring in handheld mode and when reaching overhead
— Less effective on thick, high-pile rugs, which need extra passes
— Odour-neutraliser cartridges smell artificial and need replacing every six months

$470 · Check Price on Amazon Full review →

How they stack up

Shark Cordless Detect Pro IW3511

The only auto-empty cordless on this page.

Shark Stratos Cordless Vacuum

CNET's figures put the Stratos at 9 pounds and 80 minutes of tested runtime, against 6.8 pounds and 60 minutes for the Dyson V15 Detect, which also offers a dust-revealing laser head the Stratos lacks. Unlike the Shark Cordless Detect Pro IW3511, the Stratos has no self-emptying base, so the bin is emptied by hand.

Specs side-by-side

Spec	Shark Cordless Detect Pro IW3511	Shark Stratos Cordless Vacuum
Suction	120 AW	—
Battery Life	60 min (Eco) / 40 min (Auto) / under 15 min (Boost)	—
Charging Time	3.5 hours	—
Dustbin Capacity	0.33 L (vacuum) / 30-day base	—
Filtration	HEPA, anti-allergen complete seal (99%)	—
Tools Included	1 (crevice; auto-empty base, others sold separately)	—
Weight	2.6 lbs (handle) / 7.5 lbs (full)	8.9 lb
Warranty	5-year limited	5-year limited
Wattage	240 W	—
Model	—	IZ862H
Bin Capacity	—	0.68 L
Claimed Runtime	—	Up to 60 min (eco)
Cleaning Path	—	10 in
Motor	—	309 W
Filter	—	HEPA, anti-allergen complete seal

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