In NIUs terms ECU means Electronic Control Unit and is the “brain” that controls one or more of the electrical systems or subsystems in your scooter (e.g. GPS & GPRS, alarm-system, etc.)

3 thoughts on “ECU

    1. The ECU battery is inside the ECU itself… And should be charged by the main battery or batteries. It can take several hours… If it does not charge, you should see your dealer.

      1. Mine seems to charge but takes a few days consistent use. Can you be more specific on how it’s charged and why it always runs flat

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