Roborock not charging
DIRECT ANSWER
COMMON CAUSES · RANKED
Oxidized or dirty contacts MOST COMMON
The metal strips under the robot and the pins on the dock build up an oxide layer that blocks current. Roborock's own fix list starts here.
Dock cable loose or outlet dead
The cable head has to click fully into the slot on the bottom of the dock — a half-seated plug is a classic miss.
Robot misaligned on the dock
Docked at an angle, the strips never meet the pins. The dock light staying on with the robot parked gives it away.
Deep-discharged battery UNCOMMON
After months in storage the battery drops below its wake threshold. It can need hours on the dock before showing any light.
Dock board failure RARE
S5-era docks have a documented capacitor failure — there's an iFixit board-level repair guide — but for most owners the answer is a replacement dock.
HOW TO FIX IT
Unplug the dock before cleaning its contacts, and never bridge the two contact strips with a metal tool.
Read the dock light
With the robot away, the indicator should be solid on. Dark means power — check the outlet and push the cable head firmly into the dock slot.
Erase the oxidation
Dock unplugged, rub each contact strip on the robot and each pin on the dock about ten strokes with a pencil eraser, then finish with an alcohol wipe.
Re-dock straight on
Plug the dock back in and guide the robot on square. The dock light turning off and the robot chiming means charge is flowing.
Power cycle both units
Robot off (hold power 3–5 seconds), dock unplugged for two minutes, then bring both back and dock again.
Give a stored battery time — then replace
Left it in a closet all summer? Leave it docked for several hours before judging. If it still won't take a charge, the battery or the dock is done.
COMPATIBLE PARTS
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Lithium-ion battery — S5
Power the robot off and remove the bottom screws to reach the pack; buy from a reputable seller, since no-name cells are a fire risk.
Check price on Amazon ↗Charging dock — S5 & S6
Check the dock contacts and the regional plug type before ordering a replacement.
Check price on Amazon ↗Sources
Verification
Last verified: 2026-07-05 · How we verify a fault code
Corrections
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