Approaches compared
Self-washing vs charge-only robot vacuum docks: what changes?
A dock can do more than recharge. These four stations range from empty-and-charge only to emptying, washing, refilling and drying. The question is what each one does for you.
This page checks
- What the dock doesEmpty, wash, dry and refill, one by one
- Mop wash waterWhether the wash water is heated
- DryingHow the mop dries after the wash
- Days between emptyingHow long the dust bag or bin lasts
Roborock
Where to buy
Full specifications18 figures on record · 13 differ
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PowerDetect NeverTouch Pro
Qrevo Slim
Robot Vacuum X20 Max
K11+What the dock changes
Four docks, from one job to four
The Shark, Qrevo Slim and X20 Max docks empty the dust, wash the mop, dry it and refill the robot's water. The SwitchBot K11+ station only empties dust into a bag, because its mop is a disposable cloth.
- Empties dust
- Washes mop
- Dries mop
- Refills water
The base empties into a bin, refills the robot's tank for up to 30 days, and washes and dries the mop pad after every clean.
Shark US product page- Empties dust
- Washes mop
- Dries mop
- Refills water
Dock 3.0 empties dust, washes the mops in hot water, dries with warm air and refills the robot's tank.
Roborock US product page- Empties dust
- Washes mop
- Dries mop
- Refills water
Auto-empty into a dust bag, hot water mop wash, hot air drying and automatic refill from a clean water tank.
Hands-on review and retail listingEmpties the bin into a bag
Base station is self-emptying into a 4L antibacterial bag. No other dock jobs are listed.
SwitchBot K11+ product page and launch releaseNot found
The maker page names no wash temperature and does not say if the water is heated.
Shark US product page140°F
The maker prints hot water mop washing at 140°F.
Roborock US product page131°F
Water heated up to 131°F, per a hands-on review. The maker's page was blocked when opened.
Hands-on reviewThe mop is a disposable cloth that the owner throws away. The dock only empties dust.
Maker user manualDries pad
The maker says the base dries the mopping pad after every clean. Method and time not found.
Shark US product pageWarm air
Warm air drying is part of the dock. No drying time on the page.
Roborock US product page3hours
Hot air drying in as little as 3 hours, per a hands-on review.
Hands-on reviewThe mop is a disposable cloth that the owner throws away, so the dock has nothing to dry.
Maker user manual60days
A 60-day capacity bin, per the maker.
Shark US product page7weeks
Up to 7 weeks without emptying, per the maker.
Roborock US product page75days
A 2.5 L disposable dust bag, per a hands-on review and a retailer's spec sheet.
Hands-on review90days
Maker says the station holds up to 90 days of dust.
SwitchBot launch releaseNot found
The maker says the robot's tank refills itself for up to 30 days. Dock tank sizes not found.
Shark US product pageNot found
The maker says the robot's tank is refilled automatically. Dock tank sizes were not on the page.
Roborock US product page4 / 3.8L
Clean and dirty tanks, per a hands-on review. Both sit in the dock.
Hands-on reviewThe dock empties dust into a bag and holds no water. The review lists the tank volume as none.
Hands-on review, Sep 2025Same on all four: a dock that empties the robot’s dustbin into a bag or bin.
Your home
How each one fits a home like yours
Set the conditions that describe your home. Each robot answers from its own Fit Check; nothing is scored until you choose.
Fit check
Describe your home
Pick what applies. Each robot answers from its own record.
Everything else
Where they land among 259 robot vacuums
Only the measures on which these four differ. The bar is the whole category; the block is the typical middle half; the tick is the median.
Sources
Where every figure comes from
- PowerDetect NeverTouch Pro · Shark US product page (sharkninja.com)
- Qrevo Slim · Roborock US product page and Roborock US specifications page (us.roborock.com)
- Robot Vacuum X20 Max · Hands-on review and a retailer's spec sheet; Amazon US listing title. The maker's page returned an error when opened.
- K11+ · Maker product page, launch release and user manual; hands-on review, Sep 2025
Dock functions are quoted from each maker's product page as opened on 2 Oct 2026. The X20 Max maker page could not be opened, so its figures come from a hands-on review and a retail listing.
Questions
What readers ask
What does a mop-washing dock do?
It washes the mop pads after a run. The Shark, Qrevo Slim and X20 Max docks also empty dust, dry the mop and refill the robot’s water. Only the Qrevo Slim and X20 Max give a hot wash temperature.
Does the SwitchBot K11+ self-empty its dustbin?
Yes. The maker’s page describes a self-emptying base station with a 4L antibacterial bag, good for up to 90 days. No other dock jobs are listed.
Which of these dry the mop automatically?
The Shark, Qrevo Slim and X20 Max docks. The X20 Max dries with hot air in about 3 hours per a hands-on review. The Qrevo Slim uses warm air. The K11+ uses a disposable cloth, so its dock has nothing to dry.
Common questions