Introduction
This manual provides instructions for the WORKPRO Rechargeable Pen Light, Model W13900AE. This compact and versatile tool features a bright LED spotlight, a COB floodlight, and a 365nm UV black light, designed for various applications from general illumination to specialized detection tasks. Its durable aluminum alloy construction and magnetic, rotatable clip enhance its utility for both professional and home use.

Overview of the WORKPRO Rechargeable Pen Light's key features.
1. Setup
1.1 Unpacking
Carefully remove the pen light and the included USB Type-C charging cable from the packaging. Inspect the device for any visible damage.
1.2 Initial Charge
Before first use, fully charge the pen light. Connect the included USB Type-C cable to the charging port on the device and to a compatible USB power source (e.g., computer, wall adapter). The battery indicator lights will illuminate to show charging progress. The device can be used while charging.

The pen light recharges via a standard USB Type-C cable. Battery indicator lights show the charging status and remaining power.
2. Operating Instructions
2.1 Power On/Off and Mode Selection
The pen light features multiple lighting modes: LED Spotlight, COB Floodlight, and UV Black Light. Press the power button to cycle through the modes in the following order: LED Spotlight → COB Floodlight → UV Black Light → Off.
- LED Spotlight: Provides a focused beam of 120 lumens, suitable for inspecting small details or illuminating distant objects.

The LED spotlight provides a focused beam, useful for detailed tasks like working on electronics.
- COB Floodlight: Offers a wide, bright illumination of 450 lumens, ideal for general work lighting and illuminating larger areas.

The COB floodlight offers wide area illumination. Its rotatable magnetic clip allows for hands-free positioning on metallic surfaces.
- UV Black Light (365 nm): Emits ultraviolet light for specialized detection tasks such as identifying pet urine, scorpions, automotive fluid leaks, and verifying currency.

The UV black light mode is effective for detecting automotive fluid leaks, as shown here illuminating a leak under a car hood.

The pen light offers three distinct modes: UV black light, focused spotlight, and wide floodlight, catering to diverse lighting needs.
2.2 Magnetic and Rotatable Clip
The integrated magnetic clip allows the pen light to be attached to metallic surfaces, providing hands-free operation. The clip is rotatable, enabling adjustment of the light direction for optimal illumination.

Designed for portability, the pen light is lightweight and compact, easily fitting into a pocket for convenient carrying.
This video demonstrates the features of the WORKPRO Rechargeable Pen Light, including its magnetic clip and various lighting modes.
3. Maintenance
3.1 Cleaning
Wipe the pen light with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the charging port cover is securely closed to prevent dust and moisture ingress.
3.2 Storage
Store the pen light in a cool, dry place away from direct sunlight and extreme temperatures. For long-term storage, charge the battery periodically (e.g., every 3-6 months) to maintain its health and prolong battery life.
4. Troubleshooting
4.1 Light Not Turning On
- Ensure the battery is charged. Connect the pen light to a power source using the USB Type-C cable and check if the charging indicator lights illuminate.
- Press the power button firmly to cycle through modes.
4.2 Dim Light Output
- A dim light typically indicates a low battery. Recharge the device fully.
4.3 Charging Issues
- Verify that the USB Type-C cable is securely connected to both the pen light and the power source.
- Try a different USB cable or power adapter if issues persist.
- Ensure the charging port is free of debris.
4.4 Magnetic Clip Detachment
- If the magnetic clip becomes loose, inspect its attachment points. While designed for durability, repeated forceful impacts may affect its integrity. Reattach if possible or contact support for assistance.
5. Specifications
| Feature | Detail |
|---|---|
| Brand | WORKPRO |
| Model Number | W13900AE |
| Light Source Type | LED |
| White Brightness (COB Floodlight) | 450 lumens |
| White Brightness (LED Spotlight) | 120 lumens |
| UV Light Wavelength | 365 nm |
| Power Source | Battery Powered (Rechargeable) |
| Battery Type | Lithium Ion (1 included) |
| Charging Port | USB Type-C |
| Material | Aluminum Alloy |
| Color | Black |
| Item Weight | 2.88 ounces |
| Item Dimensions (D x W x H) | 7.28" x 2.44" x 1.14" |
| Water Resistance Level | Not Water Resistant |
| Special Features | Durable, Lightweight, UV Black Light, Magnetic & Rotatable Clip |
6. Warranty Information
The WORKPRO Rechargeable Pen Light (Model W13900AE) comes with a manufacturer warranty for 1 year from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for all warranty claims. The warranty does not cover damage caused by misuse, abuse, unauthorized modification, or normal wear and tear.
7. Customer Support
For further assistance, technical support, or warranty inquiries regarding your WORKPRO Rechargeable Pen Light, please contact WORKPRO customer service. You can typically find contact details on the product packaging, the official WORKPRO website, or through your retailer. Please have your model number (W13900AE) and proof of purchase ready when contacting support.