Replacement Power for Lefant Robot Vacuum Docking Systems
When a Lefant robot vacuum stops returning to its dock, fails to charge, or the docking station no longer receives power, the external AC adapter is one of the first components worth checking. The A934-190100W-US1 is a 19V DC, 1A power adapter specified for the Lefant F1 robot vacuum and its C2 docking station.
The adapter accepts 100-240V AC input and provides 19V DC at 1A, for a 19W rated output. Lefant's F1 documentation specifically identifies A934-190100W-US1 as the power adapter model for the C2 docking station. This makes the model number, output rating, connector, and polarity important checkpoints when selecting a replacement.
Technical Specifications
| Brand | Lefant |
| Model | A934-190100W-US1 |
| Product Type | AC/DC Power Adapter |
| Input Voltage | 100-240V AC |
| Input Frequency | 50-60Hz |
| Output Voltage | 19V DC |
| Output Current | 1A |
| Rated Output Power | 19W |
| Power Supply Class | Class II |
| Connector Type | DC Barrel Connector |
| Connector Size | 5.5mm x 2.5mm; verify against the existing adapter before ordering |
| Primary Application | Robot Vacuum Docking Station |
| Docking Station | Lefant C2 |
Application Scenarios
The A934-190100W-US1 is intended for home robot-vacuum charging systems where the docking station relies on an external AC/DC power supply. It is particularly relevant when the Lefant F1 dock no longer powers up, the robot cannot charge through the dock, or the original adapter has been lost or damaged.
Because the power adapter is an external component, replacing the adapter can be a simpler maintenance step than replacing the entire docking system when the adapter itself is the source of the power problem.
OEM Replacement Compatibility
This adapter is identified with the following power-supply references:
- Lefant A934-190100W-US1
- AMC AD-0191900100EU
- AMC AD-0191900100AU
- AD0191900100EU
- AD0191900100AU
The A934-190100W-US1 is the power adapter model identified in the Lefant F1 documentation. The AMC AD-0191900100EU and AD-0191900100AU references are associated with compatible replacement-adapter listings for the same 19V / 1A power application.
Compatible Devices
The strongest documented device relationship is:
- Lefant F1 Robot Vacuum Cleaner
- Lefant F1 C2 Docking Station
Replacement-adapter listings also associate the A934-190100W-US1 specification with selected Lefant docking systems and robot vacuum models, including:
- Lefant U180
- Lefant M213
- Lefant M213S
- Lefant L1 Docking Station
- Lefant L3 Docking Station
For these secondary applications, verify the exact model printed on the original adapter and confirm the 19V / 1A output and connector before ordering. A device that uses 19V power is not automatically compatible with this adapter.
Fault Diagnosis & Replacement Logic
If the robot vacuum cannot charge after returning to the dock, the problem may originate from the docking station, charging contacts, battery, or external power adapter. A failed or damaged adapter can prevent the dock from receiving the 19V DC supply required for operation.
Before replacing the adapter, check whether the existing power supply is labeled A934-190100W-US1 or one of its confirmed associated references. The replacement should match the required 19V DC output and 1A current rating, while the connector size and polarity should also be verified.
Why the 19V / 1A Rating Matters
The Lefant F1 documentation specifies a 19V / 1A power requirement for the F1 and identifies A934-190100W-US1 as its power adapter. This gives a clear electrical reference for replacement selection.
A higher-voltage adapter should not be substituted simply because its plug fits. Likewise, connector compatibility alone does not establish electrical compatibility. Matching the voltage, current capability, connector, and polarity is essential.
Frequently Asked Questions
What is the output of the Lefant A934-190100W-US1?
The adapter provides 19V DC at 1A, giving it a rated output of 19W.
Which Lefant robot vacuum uses A934-190100W-US1?
Lefant's F1 documentation specifically identifies A934-190100W-US1 as the power adapter for the F1 robot vacuum and its C2 docking station.
Can A934-190100W-US1 be used with the Lefant U180 or M213?
Replacement-adapter listings associate this power-supply model with Lefant U180, M213, and M213S systems. Because individual revisions can differ, confirm the original adapter's model, 19V / 1A rating, connector, and polarity before ordering.
Is A934-190100W-US1 a 19W power adapter?
Yes. Its specified output is 19V DC at 1A, which corresponds to 19W of rated output power.
What should I check if the robot vacuum does not charge after replacing the adapter?
Check the docking station connection, charging contacts, battery condition, connector fit, and whether the replacement adapter matches the required 19V output and correct polarity. A new adapter alone cannot resolve a mechanical or battery fault.
The Lefant A934-190100W-US1 is a 19V DC, 1A, 19W Class II AC/DC power adapter designed for the Lefant F1 robot vacuum and C2 docking station. It accepts 100-240V AC input and supplies the external DC power required by the docking system. The model is also associated in replacement references with Lefant U180, M213, M213S, L1, and L3 systems and with AMC AD-0191900100EU/AD-0191900100AU power-supply references. Compatibility should be confirmed by matching the exact device or docking-station model, 19V / 1A specification, connector, and polarity.
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