Introduction
The Energizer Hybrid Multi-Color Headlamp Y39A42 is a versatile, hands-free lighting solution designed for various activities. It features a unique press-and-hold focus function, allowing adjustment of the light beam from a narrow spot to a wide flood. This headlamp offers hybrid power options, operating with either a rechargeable lithium-ion battery or four AAA Energizer batteries. It is built to be waterproof and dustproof, ensuring reliable performance in diverse conditions. The adjustable strap and anti-glare design enhance comfort and efficiency.
Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in injury or damage to the product.
- WARNING: Do not look directly into the LED light source. Direct exposure to the bright light can cause temporary vision impairment or eye damage.
- The light will not operate while the battery is charging inside the unit.
- Do not mix old and new batteries.
- Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel-cadmium) batteries.
- Remove batteries if they are consumed or if the product is to be left unused for an extended period.
- Ensure batteries are inserted with correct polarity (+/-).
For additional lighting safety information, please visit: https://uqr.to/lightingsafety
Package Contents
Verify that all items are present in the package:
- 1 x Energizer Hybrid Multi-Color Headlamp
- 1 x Rechargeable Lithium-Ion Battery
- 1 x Charging Cable
- 4 x AAA Energizer Batteries
Product Overview
The Energizer Hybrid Multi-Color Headlamp is designed for durability and performance. It features a robust housing, an adjustable elastic headband, and multiple light modes.

Image: Front view of the Energizer Hybrid Multi-Color Headlamp Y39A42 packaging, illustrating the headlamp unit, the included rechargeable lithium-ion battery, and four AAA batteries, highlighting its hybrid power capability and 925 lumens output.
Key features include:
- Hybrid Power: Operates with either a rechargeable lithium-ion battery or 4 AAA batteries.
- Adjustable Focus: Press and hold to transition between a narrow spot beam and a wide flood beam.
- Multi-Color Modes: Provides various light color options for different needs.
- Durability: Waterproof and dustproof design for outdoor and demanding environments.
- High Brightness: Up to 750 lumens (12 times brighter than standard LED technology) with a beam distance of up to 115 meters.
Setup
1. Battery Installation
The headlamp offers two power options:
- Using the Rechargeable Lithium-Ion Battery:
- Open the battery compartment cover located at the back of the headlamp.
- Insert the included rechargeable lithium-ion battery into the compartment, ensuring correct polarity.
- Close the battery compartment cover securely.
- Using AAA Batteries:
- Open the battery compartment cover.
- Insert four (4) AAA Energizer batteries, observing the correct polarity markings (+/-) inside the compartment.
- Close the battery compartment cover securely.

Image: Back view of the Energizer Hybrid Multi-Color Headlamp Y39A42 packaging, illustrating the battery compartment for AAA batteries and the various light modes available.
2. Charging the Lithium-Ion Battery
To charge the rechargeable lithium-ion battery:
- Locate the charging port on the headlamp.
- Connect the included charging cable to the headlamp's charging port and to a compatible USB power source (e.g., computer, wall adapter).
- The battery indicator will show charging status. The light will not operate while charging.
- Once fully charged, disconnect the charging cable.
3. Headband Adjustment
Adjust the elastic headband to ensure a comfortable and secure fit on your head. The strap is designed to be anti-glare for improved visibility.
Operating Instructions
1. Power On/Off
Press the power button once to turn the headlamp on. Press it again to cycle through modes or turn it off.
2. Mode Selection
The headlamp features multiple light modes, including various brightness levels for white light and multi-color options. Press the power button repeatedly to cycle through the available modes. The headlamp has a memory function that recalls the last used setting.
3. Focus Adjustment
To adjust the beam focus, press and hold the power button. The beam will transition from a narrow spot for long-distance illumination to a wide flood for area lighting. Release the button when the desired focus is achieved.
4. Low Battery Indicator
The headlamp is equipped with a low battery indicator to alert you when power is running low, allowing you to prepare for recharging or battery replacement.
Maintenance
1. Cleaning
To clean the headlamp, gently wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents, as these may damage the finish or internal components. Ensure the headlamp is dry before storage or next use.
2. Battery Care
- For the rechargeable lithium-ion battery, charge it regularly, even if not in frequent use, to maintain battery health. Avoid fully discharging the battery for extended periods.
- When using AAA batteries, replace all four batteries at the same time. Do not mix battery types or brands.
- Store the headlamp in a cool, dry place when not in use. If storing for an extended period, remove all batteries to prevent leakage.
Troubleshooting
If you encounter issues with your Energizer Hybrid Multi-Color Headlamp, refer to the following common problems and solutions:
- Headlamp does not turn on:
- Check if the batteries are correctly inserted with the proper polarity.
- If using the rechargeable battery, ensure it is charged.
- If using AAA batteries, replace them with fresh ones.
- Rechargeable battery not charging:
- Ensure the charging cable is securely connected to both the headlamp and the power source.
- Try a different USB power source or charging cable.
- Verify that the charging port on the headlamp is clean and free of debris.
- Light output is dim or inconsistent:
- This typically indicates low battery power. Recharge the lithium-ion battery or replace the AAA batteries.
- Ensure the lens is clean and free from dirt or smudges.
Specifications
| Feature | Specification |
|---|---|
| Brand | Energizer |
| Model Number | E303864602 (Y39A42) |
| Dimensions (L x W x H) | 18.3 x 14.2 x 14.9 cm |
| Weight | 282 grams |
| Power Source | Battery Powered (Rechargeable Lithium-ion or 4 AAA) |
| Battery Composition | Lithium-ion (rechargeable), AAA (alkaline included) |
| Light Source Type | LED |
| Luminous Flux | 750 lumens |
| Beam Distance | Up to 115 meters |
| Special Features | Adjustable Focus, Rechargeable, Waterproof, Dustproof |
| Run Time (Lithium-ion, low) | Up to 50 hours |
| Run Time (AAA, low) | Up to 20 hours |
| Material | Resin |
| Color | Black |
Warranty and Support
Energizer products are designed and manufactured to high-quality standards. Energizer stands behind the powerful performance of its lights, which are tested and comply with strict and reliable ANSI standards.
For warranty claims, technical support, or customer inquiries, please contact Energizer customer service. You can find more information and contact details on the official Energizer website:
- Website: www.energizer.eu
- Email: customer_enquiries@energizer.com
Recycling Information
Please dispose of batteries and the product responsibly. Do not dispose of batteries in household waste. Consult local regulations for proper recycling of electronic products and batteries.
Information on recycling light bulbs can be found through local recycling programs.

Image: Recycling symbols and disposal instructions visible on the product packaging, indicating proper environmental disposal practices.





