Galaxy Bang SK90190342
Galaxy Bang AC Adapter Charger User Manual
For Gateway Laptops: LT4004u, LT41P04u, LT41P05u, LT41P06u, NV570P31u
Model: SK90190342
Introduction
This manual provides essential instructions for the safe and effective use of your Galaxy Bang AC Adapter Charger. Please read this manual thoroughly before using the product to ensure proper operation and to prevent damage to your device.

Image: The Galaxy Bang AC Adapter Charger, including the main adapter unit, detachable power cord, and the barrel connector output cable.
Setup
Follow these steps to set up your AC adapter charger:
- Unpack the Contents: Carefully remove the AC adapter and power cord from the packaging. Ensure all components are present.
- Verify Compatibility: Before connecting, confirm that the adapter's specifications match your laptop's requirements.
Checking Connector Tip Size
Ensure the adapter's connector tip matches your laptop's charging port. This adapter features a 5.5mm x 1.7mm barrel connector.

Image: A visual guide to confirming the correct barrel connector tip size (5.5mm x 1.7mm) for your notebook's jack, distinguishing it from incompatible sizes like 3.0mm x 1.1mm or USB-C.
Checking Laptop and Adapter Information
Compare the voltage, amperage, and wattage requirements of your laptop with the output of this adapter. This adapter provides 19V 2.15A 40W and is also compatible with 19V 1.58A 30W devices. It accepts a worldwide input voltage of 100-240VAC 50/60Hz.

Image: A step-by-step guide demonstrating how to locate and verify the model, voltage, and current information on your laptop's bottom label and your original adapter's label to ensure compatibility.
- Connect the Power Cord: Plug the detachable power cord into the AC adapter unit.
- Connect to Power Outlet: Insert the power cord's plug into a standard wall outlet.
- Connect to Laptop: Insert the barrel connector tip into your laptop's charging port. The laptop should indicate that it is charging.
Operating Instructions
The Galaxy Bang AC Adapter Charger is designed for reliable and safe power delivery to your compatible Gateway laptop.
- Charging: Once connected, the adapter will automatically begin charging your laptop's battery and powering the device.
- Safety Features: The adapter incorporates multiple safeguard features against incorrect voltage, short circuits, and internal overheating. It is CE/FCC/RoHS certified for safety.

Image: Visual representation of the adapter's multi-safe protection features, including safeguards against short circuit, over current, over voltage, over-temperature, and fast charging capabilities, along with CE, FCC, and RoHS certifications.
- Smart Chip Technology: Equipped with smart chip technology, the adapter ensures better temperature control, good heat dissipation, low energy loss, and precise current control.

Image: A detailed view of the smart chip integrated into the adapter's circuitry, emphasizing its function in optimizing temperature, managing heat, minimizing energy loss, and regulating current for efficient operation.
Usage Scenarios
The compact design and robust construction make this adapter suitable for various environments:

Image: A collage illustrating the versatility of the AC adapter, showing it being used for charging laptops during travel, work, study, and leisure activities.
Maintenance
Proper care and maintenance will extend the life of your AC adapter:
- Keep Dry: Avoid exposing the adapter to moisture or liquids.
- Clean Gently: Use a soft, dry cloth to clean the adapter. Do not use harsh chemicals or abrasive cleaners.
- Avoid Physical Damage: Do not drop, bend, or apply excessive force to the adapter or its cables.
- Proper Storage: When not in use, store the adapter in a cool, dry place. Avoid tightly winding the cables to prevent internal wire damage.
Troubleshooting
If you encounter issues with your AC adapter, try the following steps:
- No Power/Charging:
- Ensure the power cord is securely plugged into both the adapter and the wall outlet.
- Verify the adapter's barrel connector is fully inserted into your laptop's charging port.
- Test the wall outlet with another device to confirm it is functional.
- Check for any visible damage to the adapter or cables. If damaged, discontinue use.
- Intermittent Charging:
- Ensure all connections are firm and stable.
- Avoid placing the adapter in areas where it might be easily jostled or disconnected.
- Overheating:
- Ensure the adapter is placed in a well-ventilated area, not covered by blankets or other materials.
- If the adapter becomes excessively hot, disconnect it immediately and contact support.
If these steps do not resolve the issue, please refer to the Warranty and Support section for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Model Number | SK90190342 |
| Input Voltage | 100-240VAC, 50/60Hz |
| Output Voltage | 19V |
| Output Current | 2.15A (compatible with 1.58A) |
| Wattage | 40W (compatible with 30W) |
| Connector Type | Barrel Connector (5.5mm x 1.7mm) |
| Compatible Devices | Gateway Laptops |
| Compatible Models | LT4004u, LT41P04u, LT41P05u, LT41P06u, NV570P31u |
| Product Dimensions | 5 x 3 x 2 inches |
| Item Weight | 8 ounces |
| Cable Length | Approximately 8.86 feet (59 inches + 47 inches) |
| Certifications | CE, FCC, RoHS |
| Manufacturer | Dong Guan Simer Electronics Co LTD (manufacturer for Galaxy Bang) |
Internal Construction
The adapter is constructed with high-quality materials for durability and performance.

Image: A detailed cross-section of the tinned copper core wire, illustrating its multi-layered shielding designed for efficient power transmission and durability.

Image: An exploded view diagram showcasing the internal components of the AC adapter, including the ABS+PC casing, aluminum and copper sheets for heat dissipation, the transformer, main capacitance, and the EMI filter circuit for stable power output.

Image: This graphic highlights the product's warranty details, including a 365-day warranty, 30-day money-back guarantee, and 24/7 customer service. It also illustrates the total cable length of approximately 8.86 feet, composed of a 59-inch DC cable and a 47-inch AC power cord.
Warranty and Support
Your Galaxy Bang AC Adapter Charger comes with comprehensive support:
- Warranty: Enjoy a 3-year worry-free warranty from the date of purchase. This covers manufacturing defects and ensures product reliability.
- Return Policy: A 30-day return policy is available for any reason, providing peace of mind.
- Technical Support: For any questions, troubleshooting assistance, or warranty claims, please contact Galaxy Bang customer service. (Specific contact details are not provided in this manual. Please refer to your purchase documentation or the seller's website for contact information.)
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