Head-to-head · Best Cordless Stick Vacuums

eufy HomeVac S11 Infinity vs Shark Cordless Detect Pro IW3511

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

The short answer

Shark Cordless Detect Pro IW3511 comes out ahead by a clear margin (3.9 vs 4.3). The gap is mostly about Apartments and small homes where stair lifting matters and the buyer wants to skip dust-bin emptying for weeks at a time. — read the strengths below before deciding.

Ranked #5 in Best Cordless Stick Vacuums

eufy HomeVac S11 Infinity

3.9

$249

The HomeVac S11 Infinity is the budget cordless that gets the basics right and adds the one trick almost nobody else does at this price: two batteries in the box. For roughly $250 list you get 80 minutes of total runtime, a five-tool kit, sealed 5-tier filtration and pickup performance that closes most of the gap to mid-priced rivals. Build quality and max-mode runtime are clear weaknesses, but the value math works for budget-conscious buyers.

Strengths

— Two swappable batteries in the box for 80 minutes total runtime
— 120 AW peak suction matches the Shark Detect Pro at half the price
— Roughly half the price of brand-name cordless vacuums

Watch-outs

— Max mode runs only 8 minutes per battery before draining
— Dirt pickup trails premium cordless on edge cases per Expert Reviews
— Brushless DC motor noise is higher than newer competitors at 78 dB

$249 · Check Price on Amazon Full review →

Higher ratedRanked #3 in Best Cordless Stick Vacuums

Shark Cordless Detect Pro IW3511

4.3

$399

The Cordless Detect Pro is the lightest serious cordless on this list and ships with the only auto-emptying base in the under-$500 tier. Shark trades raw suction for usability: lower power but smart-sensor automation and a hands-off base that hides emptying for up to 30 days. It's the right pick for buyers who hate touching dustbins and want a featherweight wand for stairs.

Strengths

— Auto-empty base seals 30 days of debris without hands-on emptying
— Under 4 lbs at the handle, the lightest full-size cordless reviewed
— Four Detect modes (DirtDetect, EdgeDetect, FloorDetect, LightDetect) handle edges and dark corners automatically

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

$399 · Check Price on Amazon Full review →

How they stack up

eufy HomeVac S11 Infinity

Lowest sticker price on this page and the only one with two batteries in the box. Matches the Shark Cordless Detect Pro on peak suction but with less polished smart-sensing. Less powerful than Dyson V8 on carpet but cheaper.

Shark Cordless Detect Pro IW3511

Lightest vacuum in this group at the handle, but lower suction than Dyson V15 Detect, Tineco Pure ONE S15 Pro, or even the eufy HomeVac S11 Infinity at peak. The only auto-empty cordless on this page.

Specs side-by-side

Spec	eufy HomeVac S11 Infinity	Shark Cordless Detect Pro IW3511
Suction	120 AW	120 AW
Battery Life	40 min standard / 25 min mid / 8 min max (per battery, 2 included)	60 min (Eco) / 40 min (Auto) / under 15 min (Boost)
Charging Time	3 hours per pack	3.5 hours
Dustbin Capacity	0.55 L	0.33 L (vacuum) / 30-day base
Filtration	5-tier sealed with washable HEPA	HEPA, anti-allergen complete seal (99%)
Tools Included	5 (motorized brush, crevice, 2-in-1, mini-motorized, flexible hose)	1 (crevice; auto-empty base, others sold separately)
Weight	5.5 lbs (2.5 kg with floorhead)	2.6 lbs (handle) / 7.5 lbs (full)
Warranty	2-year vacuum / 12-month batteries	5-year limited

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