Official support source
Four beeps + flashing red: Low battery
eufy · RoboVac models covered by the linked article · reviewed 2026-09-03
What it means
The battery charge is too low to continue cleaning.
Safe checks from the manufacturer
- Reconnect the charging base and clean both sets of charging pins with a dry cloth.
- Let the robot dock itself and charge for at least six hours.
Open the official support page
Stop if the error returns
Do not open a battery, charging dock, motor or sealed electrical assembly. Use the manufacturer support route.