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Cruise Control for Convenience. Please use safely!

Cruise control automatically maintains the current speed. Using cruise control eliminates the need to continually hold the 

throttle on those longer rides, while also increasing the overall battery efficiency.

● Engage Cruise Control

After enabling cruise control function, holding the thottle lever for 

approx. 7 sec at desired speed will automatically engage cruise 

control.

● Disengaging Cruise Control

Once cruise control is engaged, by squeezing, then releasing 

the brake lever, will deactivate it.

 Cruise Control

When cruise control is activated, be prepared to 

brake at any time in case of emergency. Cruise 

control can only be cancelled via braking, not via 

accelerator trigger.

   

How to Start

Recommend Braking Practices

Before riding, make sure the folding support 
handlebar post, are fastening & locked 
into position. Make sure handlebar is fully 
extended by pulling until lock clicks. 

!

Caution

!

Caution

!

Warning

40"

46.5"

(height 

adjustable)

Standing platform 

Width 7"

Handlebar 

Width

21"

 Folding (Steps)

Please periodically check the brake cable (connection points, wire damage, twisting, etc.) and drum brake (for excessive wear, loosening 

of inner wire) to ensure safe and proper braking function.

Brake Inspection

● At speed, sound may occur from accelerated sections under load (this is torsional vibration), due to vibration from motor 

and chassis components. At approx. 6~15 mph, this is a common phenomenon of all rotors at specific rotational RPM (eg. 

fans, cars, motor boats, etc.), and is not a product defect. However, in event of continuous noise or overly loud metallic noise, 
supporting bolts may have loosened. Please inspect before use.

● After use, the motor & rear drum brake may produce significants amount of heat, pleaes do not touch!

!

Advisory

► Electric Brake Sensitivity Settings

Disabled

Strong

- Charger (2A), Tools for assembly, Mini 4 Pro

* Battery comes pre-installed

Contents Checklist

Keep record of VIN 

number!

Tools

Charger

Electric Braking on Full Charge

Be aware that electric braking will not 

function while device is fully charged, ride 

accordingly. Electric brakes will resume 

operating as normal when battery is partially 

depleted. 

Step 1)

 Light Button Check

Step 2) 

Turning on the Dashboard

Light Button

Step 3) Riding 

Step 4) Apply the throttle

Rear Fender

Accelerator Trigger

Brake Lever

Kickstand

Tip

1. Raising handlebar post

3. Unfolding handles

Unfolding (Steps)

Press folding lever 
down and raise 
handlebar post.

Folding lever

2. Handle T-bar height adjustment

Press the lock groove to 
adjust handlebar height, 
then lock in place with 
the quick-release lever.

Quick-

release 

lever

Unfold and raise 
handles.

Product 

 

Speedway Mini 4 (

ERT-

0836)

Model 

Name

Notes

Motor Type

48V 500W nominal BLDC HUB Motor

 Rear-Wheel Drive / 

MAX 1300W

Battery Type

48V  15Ah 

Lithium Polymer

Battery Capacity

748 Wh

Scooter Weight

36 lbs

Charging Time

6~8 hours* 

with regular charger

battery cycle life dependent

Range 

(Continuous)

30 miles

165±10lbs rider weight,

15.5 mph (flat, level ground) 

Max Speed

28 mph

Max Incline

15 degrees (approx 27% grade)

Max Load

265 lbs

Folding Features

One-touch folding / 

Handlebar: one-touch slide & fold

Dimensions

40" x 20.9" x 46.5"

Length x Width x Height

Dashboard

Throttle trigger-mounted 

backlit LCD Display

Power On/Off (Battery %, Trip, Odometer,

Time Elapsed, Speed, Volt Meter)

Lights

LED Headlight, Tail-light

Tail-light also functions as Brake Light

Suspension

Front and Rear Suspension

Brake

Drum Brake (Rear)

Built-in electric braking (on/off), regenerative

Tires

8" (200 x 50) 

Pneumatic Tire (Front) / Solid Rubber Tire (Rear)

Materials

Aluminum alloy (frame, handlebar), 

PP (cover)

Thottle Lever

Handle / 

Grip

Handlebar Upper Post
(T-bar)

Rear Wheel Brake Lever

(+Electric Brake)

LCD 

Dashboard

1. 

If light button is enabled, the dashboard will not 

power on, and the Scooter will not start. This is 

by design as an anti-theft feature.

 * Dashboard will automatically power off after a few 

minutes of inactivity. Since the light is also turned off, 

completely power off unit (via light switch) before 

powering back on.

2. With light button OFF, press and hold the dashboard 

power button for 2 sec. to turn unit on. You can now 

switch between the different modes: Start, Cruise 

Control, Electric Brakes, etc.,.

3. With the kickstand folded up, grip the handles 

comfortably while placing one foot on the foot 

platform. Please be careful not to place a foot on 

rear fender.

4. To set off, gentlely pull the accelerator level. To 

brake and/or stop, squeeze brake lever.

Rule 1

Always decelerate before coming to a complete stop. Practice safe 

braking by decelerating with rear brake lever first, coming to a gradual 

and complete stop.

Rear Brake Deceleration

Rule 2

Extreme hard and sudden emergency braking may cause Scooter to skid 

out. Please apply progressive gradual braking. Do not apply extreme 
force to the brake lever.

Stop Safely

Rule 3

When you enable the electric brake and set brake strength on dashboard it enhances the effectiveness of the 

stopping distance. If enabled, when applying the brake both the motor & drum brake automatically work in tandem.

Electric Braking and Deceleration

1. Folding handlebar stem

2. Retracting handlebar

3. Folding handles

Press folding lever 
and fold down 
handlebar stem.

Press the locking 
groove & push the  
handlebar down.

Locking 

Groove

Fold down 
handles.

Folding Lever

Enhancements

On the Speedway Mini 4, the folding 

supports have been upgraded. 

Both the front and rear suspension have  

been significantly enhanced for improved 

riding comfort. 

Periodically check front & rear suspensions 

for warping or strain (caused by hard 

impact while riding), along with tightness of 

suspension nuts and bolts.

Note

* Range and max speed may vary according to rider weight, climate, wind resistance, road conditions, hill grade, tire pressure, battery 

condition, and overall riding manner.

Electrical Wiring Diagram

QR Code

* Scan QR Code 

to download an 

electrical wiring 

diagram.

Moderate

(1~4 Adjustable)

 Dashboard Diagnostics

Failure 

Type

Diagnostic Method

Solution

System Error

*If these error messages appear, 

please contact us at support@

ewheels.com

Motor Error

Accelerator Error

Controller Error

⑦⑧⑨⑩

(Other)

*  

 Displayed when cruise control is engaged.

 Displayed when brake lever is engaged. (Accelerator is disabled)

 Speed Mode Select

to control

,

 Main Mode Select 

short press

cycle through modes 

* If default settings for P0(8), P1(48), P2(15), P3(0) are 

changed, correct info will not display.

* In Low Speed(1) mode, changing to Slow Start(P7) 

function will not enable feature.

* When battery remaining is 10%, meter will flash 3x every 10 sec. When 

battery remaining is 0%, meter will continue to flash non-stop.

enters settings mode

1. Unit measurement - P4 : 0(Km/h), 1(mp/h) displayed

2. Start Mode selection - P5 : 0(instant), 1(kick push start)

3. Cruise Control - P6 : 0(disabled), 1(enabled)

4. Slow Start - P7 : 0(off : power start) ~ 5(smooth start)

5. Max Power Select - P8 : 1 ~ 100

6. Battery Eco Mode - P9 : 1(max), 2(mid), 3(off)

7. Electric Brake Sensitivity Select - PA : 0(disable) ~  5(strongest)

8. LCD Brightness - Pb : 0(off) ~ 5(max)

8(fixed)

Start Mode

0(instant)

1(kick push)

Slow Start

0(off:power)

~5(slow)

Battery Eco Mode

1(max)

2(mid)

3(off)

Max Power 

Select

1~100

Electric Brake 

Sensitivity

0(off)

~5(strongest)

LCD Brightness

0(off)

~5(max)

Cruise Control

0(disabled)

1(enabled)

48(fixed)

15(fixed)

0(fixed)

Units (speed)

0(Km/h)

1(mp/h)

Mode

Description

TRIP

Current Trip Mileage (long 

press mode button to reset)

ODO

Total Mileage

CHA

(unused)

VOL

Current Voltage

DST

(unused)

TIME

Time Elapsed

 Dashboard Settings

Speed

Speed Mode

Power 

Button

Accelerator 

Trigger

Unit of 

Speed

Battery Meter 

/ Remaining 

Charge

Time Elapsed

Mode Button

With dashboard powered on, pressing 

will display currently selected 

speed mode, and pressing 

will cycle through speed modes (3 in total). 

Once mode is selected, pressing will 

complete the selection.

Turn on dashboard. With 

pressed 

and held for 2~3 sec., press  to enter 

settings

 mode.

In settings mode, pressing  once allows 

settings value changes, where 

and increase and decrease values.

Setting 

Mode

Setting 

Value

Battery 

(internal)

Charging Port

Front Fender

Headlight

Rear Fender

Taillight (Brake Light)

Quick-Release 

Lever

(height adjust)

Front Suspension

Rear Wheel Motor

Rear Suspension

8" Solid Rubber 

Rear Tire

8" Pneumatic Front Tire

Rear Suspension Arm

Light 

Button

High-strength Retractable 

Standing Deck

Folding / Unfolding

Locking Shaft Lever

Handlebar Post

(steering tube)

Specifications

Dashboard Functionality, Cont.

Dashboard Functionality

Getting Started with Your Speedway Mini4 Pro

Getting Started with Your Speedway Mini4 Pro, Cont.

Overview of the Speedway Mini4 Pro 

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