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  3. Water tank (robot)
Mopping

Water tank (robot): typical values for robot vacuums

Half of robot vacuums in the catalog have water tank (robot) below 200 ml, and 80% fall between 74 ml and 320 ml (416 models with data).

Median200 ml
Median 2026110 ml
Typical range74 ml – 320 ml
Models416
Distribution

How water tank (robot) is distributed

02653791055015025035045050–100: 105100–150: 61150–200: 39200–250: 65250–300: 57300–350: 50350–400: 20400–450: 7450–500: 12Median 200 ml
Percentile10 %25 %50 %75 %90 %
Water tank (robot)74 ml94 ml200 ml280 ml320 ml

A model at the 75th percentile beats three quarters of the catalog on this spec.

Trends

Median water tank (robot) by year

0 ml100 ml200 ml300 ml400 ml20192020202120222023202420252026
Recent leaders

Highest water tank (robot)

1 Medion MD 20053
Medion · 2024
MD 20053
80 minGyroscopeCharging dock
850 ml
3.9
2 Xiaomi Robot Vacuum X10 Plus
Xiaomi · 2022
Robot Vacuum X10 Plus
4,000 Pa120 minLaser (LiDAR)All-in-one dock (empty + wash)
800 ml
6.6
3 Roborock Qrevo L 798
Roborock · 2025
Qrevo L 798
8,000 Pa180 minCharging dock
800 ml
6.1
4 Ecovacs Deebot T30S Combo
Ecovacs · 2024
Deebot T30S Combo
11,000 PaLaser (LiDAR)All-in-one dock (empty + wash)
550 ml
6.8
5 Ecovacs Deebot T30S
Ecovacs · 2024
Deebot T30S
11,000 PaLaser (LiDAR)All-in-one dock (empty + wash)
550 ml
6.7
6 Lenovo E2 Pro CleanSense 1600 PowerPlus
Lenovo · 2025
E2 Pro CleanSense 1600 PowerPlus
1,600 Pa150 minGyroscopeCharging dock
520 ml
3.9
7 Midea Comfee I5C
Midea · 2025
Comfee I5C
4,000 Pa110 minGyroscopeCharging dock
450 ml
3.8
8 ETA Leone
ETA · 2026
Leone
5,000 Pa235 minLaser (LiDAR)Charging dock
420 ml
6.3
9 Cecotec Conga M70
Cecotec · 2025
Conga M70
20,000 PaLaser (LiDAR)Charging dock
420 ml
9.0
10 EZVIZ RS2
EZVIZ · 2023
RS2
4,000 Pa220 minLaser (LiDAR)All-in-one dock (empty + wash)
400 ml
8.2

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