Indledning
This manual provides essential information for the safe operation, setup, maintenance, and troubleshooting of your HAIBOXING 1/12 Scale Brushless RC Car, model 903A. Please read this manual thoroughly before operating the vehicle to ensure proper function and longevity.
Sikkerhedsoplysninger
This is a hobby-grade product designed for performance. Improper use can lead to damage, loss of control, or safety hazards. Adhere to the following guidelines:
- Voksenopsyn: Users under 14 years old should be closely supervised by an adult during operation.
- Læs manualen: Always read the entire instruction manual before first use.
- Driftsmiljø: Operate the RC car in open areas, away from people, pets, vehicles, and obstacles. Avoid public roads.
- Vandeksponering: While the Electronic Speed Control (ESC) is splash-waterproof, avoid submerging the vehicle in water to prevent damage to other electronic components.
- Batterisikkerhed:
- Use only the provided 7.4V 1600mAh Li-Po batteries. Do not use 3S or higher voltage batterier.
- Charge batteries using the supplied USB charging cables.
- Do not leave batteries idle for long periods; charge them regularly to prevent over-discharging.
- Always supervise battery charging.
- Bevægelige dele: Keep fingers, hair, and loose clothing away from rotating parts like wheels and gears.
- Varme: Motoren og ESC'en kan blive varme under drift. Undgå at røre ved dem umiddelbart efter brug.

Image: Safety warning for model-grade product, emphasizing careful use and outlining the 3-month protection plan for replacement parts.
Hvad er der i æsken
Ved udpakning skal du kontrollere, at alle komponenter er til stede:
- HAIBOXING 1/12 Scale Brushless RC Car 903A
- 7.4V 1600mAh Li-Po Battery (x2)
- USB Charging Cables (x2)
- 2.4GHz Remote Control Transmitter
- Produktmanual (dette dokument)
- Kropsklip
- Optional Wheelie Bar

Image: Contents of the HAIBOXING 903A package, including the RC truck, remote, two Li-Po batteries, and USB chargers.
Opsætning
1. Batteriopladning
Before first use, fully charge both 7.4V 1600mAh Li-Po batteries using the provided USB charging cables. Connect the USB cable to a suitable USB power source (e.g., computer USB port, USB wall adapter) and then to the battery. The charging indicator will show the charging status (refer to charger instructions for specific light patterns).

Image: Two 7.4V 1600mAh Li-Po batteries and their corresponding USB charging cables.
2. Installing Batteries in the RC Car
- Remove the body clips and lift the RC car body.
- Find batterirummet.
- Connect a fully charged 7.4V 1600mAh Li-Po battery to the vehicle's ESC connector.
- Securely place the battery in the compartment.
- Reattach the car body with the body clips.

Billede: Top view of the RC car chassis, showing the placement of the battery and other electronic components.
3. Isætning af batterier i fjernbetjeningen
- Åbn batterirummet i bunden af fjernbetjeningen.
- Insert the required batteries (typically AA, not specified in JSON, so I'll omit specific type but mention "required batteries") observing polarity.
- Luk batterirummet.

Image: Detailed diagram of the 2.4GHz remote control transmitter, highlighting its various functions and the battery compartment.
4. Tilslutning af fjernbetjeningen
The remote control and RC car are typically pre-bound from the factory. If re-binding is necessary (e.g., after replacing the transmitter or ESC, or if connection is lost):
- Ensure both the RC car and remote control are powered off.
- Turn on the RC car. The ESC indicator light will flash.
- Tænd for fjernbetjeningen.
- The indicator lights on both the car and remote should become solid, indicating a successful bind.
- If binding fails, refer to the troubleshooting section or contact support.
Betjeningsvejledning
Fjernbetjeningsfunktioner
Gør dig bekendt med fjernbetjeningens layout:

Image: Detailed diagram of the 2.4GHz remote control transmitter, showing the steering wheel, throttle trigger, trims, and power switch.
- 1. Steering Wheel: Styrer venstre og højre styring.
- 2. Throttle Trigger: Pull for forward, push for reverse/brake.
- 3. Batterirum: Holds the remote control batteries.
- 4. Steering Trim (ST.TRIM): Justerer styrets neutrale position.
- 5. Steering Reverse (ST.REV): Ændrer styreretningen.
- 6. ON/OFF Power Switch: Tænder/slukker fjernbetjeningen.
- 7. Power Indicator (Low Power): Indicates low battery for the remote.
- 8. Steering D/R (Dual Rate): Justerer den maksimale styrevinkel.
- 9. Speed Tuning (SPEED): Adjusts the maximum speed of the vehicle.
- 10. Throttle Reverse (TH.REV): Vender gashåndtagets retning.
- 11. Power Indicator (Full Power): Indicates sufficient battery power for the remote.
- 12. Bind/Mode: Used for binding (disabled for this car model for general operation).
Kørsel i fjernstyrede bil
- Tænd: Turn on the RC car first, then the remote control.
- Juster hastighed: Use the "Speed Tuning" dial (9) on the remote to set a comfortable maximum speed, especially for beginners.
- Frem/tilbage: Gently pull the throttle trigger (2) to move forward. Push the trigger away from you to brake, then push again for reverse. Avoid rapid forward-to-reverse transitions.
- Styretøj: Turn the steering wheel (1) left or right to steer the vehicle. Adjust "Steering Trim" (4) if the car does not drive straight.
- Off-Road Operation: The 903A is designed for off-road use with its 4x4 drivetrain, aluminum oil shocks, and V-tread tires.
- Sluk: Always turn off the RC car first, then the remote control after use. Disconnect the battery from the RC car.

Image: The HAIBOXING 903A RC car in action, showcasing its brushless motor and high-precision splash-waterproof ESC with aluminum heat sink.
Opretholdelse
Regular maintenance ensures optimal performance and extends the lifespan of your RC car.
- Rensning:
- After each use, especially in dirty or dusty conditions, clean the vehicle.
- Use a soft brush or compressed air to remove dirt and debris from the chassis, suspension, and drivetrain.
- Tør kroppen af med reklameamp klæde.
- Inspektion af komponenter:
- Regularly check for loose screws, damaged parts, or worn gears.
- Inspect the tires for wear and ensure they are securely mounted.
- Check the oil shocks for leaks or damage.
- Ensure all metal drive shafts and outdrive cups are free from damage.
- Batteripleje:
- Frakobl altid batteriet fra køretøjet, når det ikke er i brug.
- Store Li-Po batteries in a cool, dry place, ideally at a storage voltage (around 3.8V per cell).
- Do not fully discharge Li-Po batteries, as this can damage them.
- Smøring: Periodically check and lubricate moving parts as needed, such as universal joints and bearings, with appropriate RC lubricant.

Image: Internal components of the HAIBOXING 903A, showing the robust 4WD drivetrain with metal parts and aluminum oil shocks.
Fejlfinding
Refer to the table below for common issues and their solutions. If problems persist, contact customer support.
| Problem | Løsning |
|---|---|
| Holdte op med at virke efter et par anvendelser |
|
| Styretøjet virker, men bilen vil ikke køre |
|
| Går ikke ligeud |
|
| Batterier kan ikke tage opladning |
|
| Not going reverse |
|
| Et af hjulene drejer ikke |
|
| Slukker af sig selv |
|
| Ingen signalforbindelse, bindingsfejl |
|
| Styrer ikke |
|
| Smaller than expected | It is typically a 1/12th hobby grade RC vehicle with proportional steering and throttle control, fast and well-constructed. It is fun to drive. Make a try and enjoy an authentic drive. |
| Manglende dele | Although every car has been strictly tested before leaving the factory, inadvertent mistakes or damage during transportation may occur. If it is the case, please contact us for assistance. |
| Bilen kører af sig selv, når den er tændt |
|

Image: Troubleshooting table, part 1, detailing solutions for common operational issues.

Image: Troubleshooting table, part 2, detailing solutions for mechanical and connectivity issues.
Specifikationer
| Feature | Detalje |
|---|---|
| Modelnummer | 903A |
| Skala | 1/12 |
| Motortype | 2847 Brushless 3800KV Motor |
| Elektronisk hastighedskontrol (ESC) | Splash waterproof 35A brushless ESC with overheating, over-current protection, and automatic low battery voltage afskæring. |
| Servo | Agile 3-wire 25g servo |
| Drive System | 4X4 Off-Road |
| Tophastighed | Op til 55 km/t |
| Kontrolsystem | 2.4 GHz Radio Control System |
| Kontrolområde | Over 330 fod |
| Batteri (køretøj) | 7.4V 1600mAh Li-Po (x2 included) |
| Køretid | Up to 30 minutes (per battery, total 60 minutes with two batteries) |
| Chassis funktioner | Steel gear pinions, aluminum oil shocks, metal drive shafts, metal wheel shafts, metal outdrive cups, rubber sealed ball bearings. |
| Dæk | High-grip, off-road V-tread tires with sponge inserts. |
| Kropsmateriale | Thickened PVC with DIY decal sheet. Classic PA materials for plastic parts. |
| Produktdimensioner | 14.9 x 11 x 6.1 tommer |
| Varens vægt | 4.5 pund |
| Anbefalet alder | 8 years and up (with adult supervision for under 14) |

Image: Product dimensions of the HAIBOXING 903A RC car.
Garanti og support
HAIBOXING offers a 3-måneders beskyttelsesplan for this product. We provide free replacement parts for 3 months from the date of purchase. If you encounter any issues or require technical assistance, please contact us via Amazon Messages. We are committed to providing support and will be happy to assist you.
Spare parts are generally available for purchase to ensure the continued enjoyment of your RC vehicle.




