- Robot vacuums
- Robot vacuum
Error 8
eufy Error 8 on robot vacuum: low battery and shutdown
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
RoboVac Error 8 means the battery is low and the system is shutting down. Dock the robot on the Charging Base with its solid white LED lit, wipe the charging contact pins with a dry cloth, and let it charge for 240 to 300 minutes until the button turns solid blue.
Safety first
Stop and check this first
- Do not use a damaged or modified battery pack or appliance, or a damaged power cord or plug; if the Li-ion battery shows abnormal heat, odor, or swelling, stop using the robot immediately and contact official eufy service.
- Do not expose the electronics of RoboVac, its battery, or the integrated Charging Base: there are no user-serviceable parts inside, and the battery should only be replaced by a skilled professional using the original battery.
Safe checks you can perform
- Check that the Charging Base LED is lit solid white
- Dust off the charging contact pins with a dry cloth
- Dock RoboVac and charge for 240 to 300 minutes until solid blue
- Clear 3 ft/1 m on both sides and 6 ft/2 m in front of the Charging Base
Leave these tasks to a qualified professional
- Do not attempt this professional task: Repair or replacement of the Charging Base or adapter by eufy service center
- Do not attempt this professional task: Li-ion battery replacement by a skilled professional
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Repair or replacement of the Charging Base or adapter by eufy service center
What they doIf the Charging Base indicator does not light up on a new wall outlet, or if you hear no voice prompt when RoboVac is docked onto the base, the eufy service center repairs or replaces the Charging Base or original power adapter.
They must show youthe power test of the Charging Base and the original 24 V 1 A power adapter.
In writingwhether the Charging Base or adapter is repaired or replaced and the warranty coverage.
Li-ion battery replacement by a skilled professional
What they doWhen the base charges properly but the 14.4 V (5200 mAh) Li-ion battery no longer holds a charge and triggers Error 8 early, battery replacement must be performed by a skilled professional using the manufacturer's original battery.
They must show youthe replaced battery pack and RoboVac completing a charge to solid blue without shutting down with Error 8.
In writingthe original battery part reference installed, the diagnosis, and the service warranty.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Check that the Charging Base LED is lit solid white
- Who:
- you, at the Charging Base and wall outlet.
- How:
- check whether the LED indicator on the Charging Base is solid white when RoboVac is not docked. If it does not light up, reconnect the round connector of the adapter (24 V 1 A) to the Charging Base and try a new power outlet, as the X8 manual instructs.
- Result that matters:
- the LED indicator on the Charging Base stays solid white.
- If the solid white LED lights up after reconnecting the cable or changing outlets:
- proceed to clean the pins and charge.
- If the base LED stays off on a different outlet:
- contact the eufy service center to repair or replace the Charging Base.
- Evidence to keep:
- a photo of the Charging Base LED indicator and the original power adapter label.
Evidence: RoboVac X8 Owner's Manual · Common charging-related questions about RoboVacs
Dust off the charging contact pins with a dry cloth
- Who:
- you, with the robot switched off and the power adapter unplugged.
- How:
- wipe the charging contact pins on the Charging Base and on the bottom of RoboVac using only a clean dry cloth, as required by the X8 manual (recommended once every month).
- Result that matters:
- the metal charging contact pins on both the base and the robot are clean and dry.
- If there was dust on the pins:
- plug the base back in and dock the robot by aligning its charging pins.
- If the pins were already clean:
- check how the robot docks and the clearance around the base.
- Evidence to keep:
- a photo of the charging contact pins on the base and on the underside of RoboVac.
Evidence: RoboVac X8 Owner's Manual · Common charging-related questions about RoboVacs
Dock RoboVac and charge for 240 to 300 minutes until solid blue
- Who:
- you.
- How:
- attach RoboVac to the Charging Base by aligning its charging pins with the pins on the base: confirm you hear a voice prompt when docked and the Start/Pause indicator turns breathing orange. Charge fully (240 - 300 mins on the X8, about 5-6 hours from 0-100%) until the light turns solid blue.
- Result that matters:
- the indicator changes from breathing orange to solid blue and the robot starts cleaning without Error 8.
- If it charges with a breathing orange light and reaches solid blue:
- in Auto Recharge it will resume cleaning at 80% battery capacity.
- If there is no voice prompt when docked or no breathing orange light:
- contact the eufy service center.
- Evidence to keep:
- the Start/Pause LED color when docked and how long the robot runs before Error 8.
Evidence: X8/LR20/LR30/L35 Series RoboVac Voice Alerts and Solution · RoboVac X8 Owner's Manual · Common charging-related questions about RoboVacs
Clear 3 ft/1 m on both sides and 6 ft/2 m in front of the Charging Base
- Who:
- you.
- How:
- place the Charging Base on a level surface against a wall and remove objects within 3 ft/1 m of the left and right side and within 6 ft/2 m of the front, as the X8 manual specifies so RoboVac can return before shutting down with Error 8.
- Result that matters:
- RoboVac finds and docks onto the Charging Base on its own when the button turns solid orange on low battery.
- If it returns and docks properly:
- you can leave it on the base (the protection circuit prevents overcharging) or recharge at least once every 6 months when stored.
- If it still cannot charge or shuts down rapidly with Error 8:
- contact official eufy support.
- Evidence to keep:
- a photo of the Charging Base location showing the 3 ft/1 m side and 6 ft/2 m front clearance.
Evidence: RoboVac X8 Owner's Manual · Common charging-related questions about RoboVacs
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Robot vacuums
- Brand
- eufy
- Product type
- Robot vacuum
Known code variants
- Batería baja el dispositivo se está apagando
- Error 8 batería baja
- Error 8 low battery
- Error 8 Roborock
- Error 8 Roomba i Series
- eufy Error 8
- eufy RoboVac Error 8
- iRobot Error 8
- Low battery shutting down the device
- Please charge your device Error 8
- Roborock Error 8
- Roborock S7 Error 8
- Robot trapped
- RoboVac Error 8
- Roomba Error 8
- Vacuum problem
What it means
In eufy's voice alert table for the X8, LR20, LR30 and L35 series, and in the RoboVac X8 Owner's Manual, Error 8 means low battery: the system will shut down and asks you to charge the device and try again. The manual explains that the Start/Pause button turns solid orange when returning on low battery, breathes orange while charging on the Charging Base, and turns solid blue when fully charged (240 - 300 mins in the X8 specifications table, or about 5-6 hours from 0-100% in eufy's charging FAQ). It is distinct from Error S1 (Battery Error). Error 8 alone never proves that the battery or the Charging Base is faulty.
Warnings and stop conditions
- Higheditorial warning
Do not use a damaged or modified battery pack or appliance, or a damaged power cord or plug; if the Li-ion battery shows abnormal heat, odor, or swelling, stop using the robot immediately and contact official eufy service.
Evidence: RoboVac X8 Owner's Manual
- Highsource verified
Do not expose the electronics of RoboVac, its battery, or the integrated Charging Base: there are no user-serviceable parts inside, and the battery should only be replaced by a skilled professional using the original battery.
Evidence: RoboVac X8 Owner's Manual
Symptoms and causes
Probable causes · in order
- Battery depleted before reaching the Charging BaseCommon
The X8 manual notes that RoboVac returns automatically when battery is low, but return speed slows down in rooms with obstacles or when the base lacks 3 ft/1 m side clearance and 6 ft/2 m front clearance.
Evidence: X8/LR20/LR30/L35 Series RoboVac Voice Alerts and Solution · RoboVac X8 Owner's Manual
- Dust on the charging contact pins of the robot or baseCommon
The manual instructs you to dust off the charging contact pins on the Charging Base and the bottom of RoboVac once every month with a dry cloth so it can charge properly.
Evidence: RoboVac X8 Owner's Manual · Common charging-related questions about RoboVacs
- Unplugged adapter or Charging Base LED not lit solid whitePossible
According to the manual and eufy's charging FAQ, when the Charging Base connects to AC power its LED indicator is solid white; if unlit, the robot receives no charge.
Evidence: RoboVac X8 Owner's Manual · Common charging-related questions about RoboVacs
- Charging Base or battery pack requiring official serviceLess common
If the Charging Base indicator does not light up on a new wall outlet or you hear no voice prompt when docking with clean pins, the manual refers you to the eufy service center.
Evidence: RoboVac X8 Owner's Manual
Virtual technician
Does Error 8 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
X8/LR20/LR30/L35 Series RoboVac Voice Alerts and Solution
eufy · 2026 · official_doc
- 2
eufy · 2026 · official_doc
- 3
Common charging-related questions about RoboVacs
eufy · 2026 · official_doc
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