Introduction
This manual provides essential instructions for the safe and effective use of your onerbl AC/DC Adapter. Please read this guide thoroughly before operating the device to ensure proper functionality and longevity. This adapter is designed to provide reliable power for compatible devices, including the Deltran Battery Tender 1200 AMP, vehicle jump starters, and portable power stations.
Setup Guide
Unboxing and Components
Carefully remove all components from the packaging. Verify that all items are present and undamaged. The package should include the AC/DC power adapter unit and a set of interchangeable DC tips.

Image: The onerbl AC/DC adapter unit shown with its attached power cord and a separate holder containing various interchangeable DC tips.
Connecting the Adapter
- Identify the correct DC tip: Select the appropriate DC tip from the provided set that matches the input port of your device (e.g., Deltran Battery Tender, jump starter).
- Attach the DC tip: Securely connect the chosen DC tip to the output cable of the AC/DC adapter. Ensure a firm connection.
- Connect to device: Insert the attached DC tip into the power input port of your compatible device.
- Connect to power outlet: Plug the AC power cord of the adapter into a standard AC 100-240V 50/60Hz electrical outlet.
Video: This video demonstrates the various connector types available with the charger and illustrates how to connect the AC power cord to the adapter and how to attach the DC output cable to the charging unit. It also shows the LED indicator behavior during charging.
Operating Instructions
Powering On and Charging
Once the adapter is correctly connected to your device and a power outlet, it will begin charging. The adapter features LED indicators to show its status:
- Green LED: Indicates the adapter is connected to AC power but not actively charging a battery, or the battery is fully charged.
- Red LED: Indicates the adapter is actively charging a connected battery.
Ensure the LED indicator shows red when charging begins. If it remains green, verify all connections and ensure the device requires charging.

Image: The onerbl AC/DC adapter plugged into a power strip, demonstrating a typical usage scenario for charging a compatible device.
Care and Maintenance
Proper care ensures the longevity and safe operation of your AC/DC adapter.
- Cleaning: Disconnect the adapter from all power sources and devices before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Keep the cables neatly coiled to prevent damage.
- Safety: Avoid exposing the adapter to moisture or liquids. Do not attempt to open or repair the adapter yourself. Ensure adequate ventilation during use to prevent overheating.

Image: This image displays the physical dimensions of the onerbl AC/DC adapter, including its length, width, and height, along with the cable length. This information is useful for storage and placement considerations.
Troubleshooting
If you encounter issues with your adapter, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Adapter not powering on (no LED) | No power from outlet; loose connection; faulty adapter. | Check the wall outlet with another device. Ensure the AC power cord is securely plugged into both the adapter and the outlet. If the issue persists, contact support. |
| Device not charging (Green LED, but device is low) | Incorrect DC tip; loose connection to device; device not compatible. | Verify the correct DC tip is used and securely connected to the device. Ensure the device is compatible with the adapter's output specifications. |
| Adapter feels excessively hot | Poor ventilation; overloaded circuit; internal fault. | Ensure the adapter is in a well-ventilated area. Disconnect immediately if it feels too hot to touch. Do not use if overheating persists. Contact support. |
Product Specifications
| Feature | Detail |
|---|---|
| Brand | onerbl |
| Input Voltage | AC 100-240V 50/60Hz |
| Amperage | 1200 Amps (for compatible devices) |
| Wattage | 36.5 watts |
| Connector Type | DC Barrel (with multiple interchangeable tips) |
| Compatible Devices | DELTRAN TEN-DER 030-0004, 030-0004-WH, 030-0006-WH, Vehicle Jump Starter & Portable Power Station |
| Special Feature | Travel-friendly design |
| Item Weight | 4 ounces |
| Package Dimensions | 4 x 3 x 1.5 inches |
Warranty and Support
This onerbl AC/DC Adapter is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the product packaging or contact your retailer.
For technical support, troubleshooting assistance, or warranty claims, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.





