1. Introduction
Thank you for choosing the koopower 36ft 100 LED Battery Operated String Lights. These versatile lights are designed for both indoor and outdoor use, featuring 100 warm white LEDs on a clear wire. With 8 lighting modes and a convenient timer function, they are perfect for various decorative applications. The IP65 waterproof rating ensures durability in different weather conditions.
2. Safety Information
- Battery Safety: This product requires 3 AA batteries (not included). Ensure correct polarity when inserting batteries. Do not mix old and new batteries, or different types of batteries. Remove batteries if the product is not used for an extended period.
- Water Resistance: The string lights have an IP65 waterproof rating, making them suitable for outdoor use in rain, snow, and frost. However, the battery box should be protected from direct water immersion. If used outdoors, it is recommended to place the battery box in a plastic bag or a protected area to prevent moisture ingress, as noted in customer feedback.
- Heat: The LED lights are designed to not overheat, making them safe to display around foliage or fabrics.
3. Package Contents
Upon opening the package, you will find the following items:
- 1 x 36ft 100 LED Battery Operated String Lights
- 1 x User Manual

Image: Contents of the koopower string lights package.
4. Setup
4.1. Battery Installation
- Locate the battery box attached to the string lights.
- Open the battery box by gently pressing the side clips and lifting the lid.
- Insert 3 AA batteries (not included) into the battery compartment, ensuring correct polarity (+/-).
- Close the battery box securely, making sure the seal is tight to maintain its waterproof integrity.
Video: Demonstration of battery installation and initial power-on for the string lights.
4.2. Placement
Unravel the string lights carefully. The clear wire design allows them to blend seamlessly with any decor. For secure installation, especially in outdoor or elevated areas, consider using light clips (not included) to attach them to surfaces like Christmas trees, balconies, fences, or gutters.

Image: Battery-powered string lights illuminating an outdoor setting.
5. Operating Instructions
The string lights offer 8 different lighting modes and a timer function, controlled via a button on the battery box or an optional remote control (if included with your specific model).
5.1. Power On/Off
- To turn ON: Press the 'Mode/Power' button on the battery box once.
- To turn OFF: Press and hold the 'Mode/Power' button for 3 seconds.
5.2. Lighting Modes
Press the 'Mode/Power' button repeatedly to cycle through the 8 available lighting modes:
- Combination
- Steady On
- Slow Fade
- In Waves
- Slo Glo
- Chasing/Flash
- Sequential
- Twinkle/Flash

Image: The string lights in a coiled state, demonstrating their warm white glow.
5.3. Timer Function
To activate the timer, press the 'TIMER' button on the battery box (or remote, if applicable). The lights will automatically turn on for 6 hours and then turn off for 18 hours, repeating this cycle daily. The timer activates from the moment you press the button.
5.4. Adjustable Brightness (with Remote)
If your model includes a remote control, use the DIM- and DIM+ buttons to adjust the brightness of the lights to your preference.
6. Maintenance
- Battery Replacement: Replace batteries when the lights dim or stop working. Always replace all 3 AA batteries at once.
- Cleaning: Gently wipe the lights and battery box with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Storage: When not in use, store the string lights in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries before storing for extended periods.
7. Troubleshooting
- Lights not turning on: Check if batteries are inserted correctly and are not depleted. Ensure the power button is pressed to turn the lights on.
- Lights dimming quickly: This indicates low battery power. Replace the batteries.
- Lights not responding to mode changes: Ensure the battery box is dry and free from moisture. Try replacing batteries.
- Water ingress in battery box: If moisture enters the battery box, immediately remove batteries and allow the box to dry completely before re-inserting new batteries. Ensure the box is properly sealed for future use.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | HG0903B |
| Length | 36 Feet (11 Meters) |
| Number of LEDs | 100 |
| Light Color | Warm White |
| Wire Color | Clear Wire |
| Power Source | 3 x AA Batteries (not included) |
| Voltage | 4.5 Volts |
| IP Rating | IP65 (Waterproof) |
| Special Features | 8 Lighting Modes, Timer (6H On/18H Off), Energy Efficient, Twinkling, Blinking |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Average Life | 500,000 Hours |
9. Warranty and Support
For warranty information or product support, please refer to the contact details provided on the product packaging or contact koopower customer service directly. Keep your purchase receipt for any warranty claims.