The Xiaomi 4Lite2-20A electric scooter controller coordinates motor operation and communication between the main electrical components. It is intended for repairs to the Xiaomi Electric Scooter 4 Lite (2nd Gen) when the existing controller has been identified as faulty or damaged. Do not replace the controller solely on the basis of an error code. For “Xiaomi 4 Lite second generation controller”, verify the original connector, wiring and controller compatibility before installation.

Xiaomi 4Lite2-20A electric scooter controller: identifying the version

The manufacturer’s label carries the marking 4Lite2-20A. Compare this code, the housing and every connector with the removed controller before ordering. The external shape alone is not enough to establish compatibility.

This unit is intended for the second-generation model. Do not assume it will fit the first-generation Xiaomi 4 Lite: the electronics, connectors and electrical parameters may differ.

Electrical specifications and construction

The aluminium-alloy housing has cooling fins to help dissipate heat generated during operation. Check the electrical ratings as well as the physical connections when comparing replacement parts.

• Controller model: 4Lite2-20A
• Compatible model: Xiaomi Electric Scooter 4 Lite (2nd Gen)
• Nominal voltage: 21.6 V DC
• Minimum voltage: approximately 18.5 ± 1 V
• Specified current: 20 A, with a tolerance of ± 1 A
• Firmware marking: FW V1.1
• Housing: aluminium alloy with cooling fins
• Product code: RMR-061-Mi4lite2
• Supplied components: controller with its associated wires and connectors

Checks before replacement

Switch off the scooter and safely disconnect the battery before replacing the electronics. If moisture damaged the previous controller, check the connected circuits before installing the replacement. A short circuit in the wiring can damage a new unit too.

Whether programming or additional configuration is needed after replacement depends on the scooter system and controller version. The FW V1.1 marking does not by itself establish that no further adjustment will be required. If you are unsure about diagnosis, connections or configuration, consult a specialist repair workshop familiar with this model.