1. Introduction
This manual provides essential information for the safe and effective use of your RYOBI 40V 6.0 Ah Lithium-ion High Capacity Battery, Model OP40602. This battery is designed to provide extended run time for compatible RYOBI 40V tools, offering twice the run time compared to standard RYOBI 40V high capacity batteries while maintaining consistent power and performance.
It is crucial to read and understand all instructions before operating the battery or any compatible tool. Retain this manual for future reference.

Image 1: RYOBI 40V 6.0 Ah Lithium-ion High Capacity Battery (Model OP40602).
2. Safety Information
Always observe basic safety precautions when using battery-powered products to reduce the risk of fire, electric shock, and personal injury.
2.1 General Battery Safety
- Read All Instructions: Before using the battery, charger, or product, read all instructions and cautionary markings.
- Charging: Only charge the battery with the charger specified by the manufacturer. An incompatible charger may create a risk of fire.
- Avoid Damaged Batteries: Do not use a battery pack or appliance that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion, or risk of injury.
- Proper Storage: Store the battery in a cool, dry place, away from direct sunlight, heat sources, and moisture.
- Disposal: Dispose of batteries responsibly according to local regulations. Do not incinerate or expose to high temperatures.
- Avoid Short Circuits: Do not short-circuit the battery terminals.
- Keep Away from Children: Store batteries out of reach of children.
3. What's in the Box
The RYOBI 40V 6.0 Ah Lithium-ion High Capacity Battery (Model OP40602) is typically sold as a standalone unit. Your package should contain:
- One (1) RYOBI 40V 6.0 Ah Lithium-ion High Capacity Battery (Model OP40602)
Please note that this product often comes in bulk packaging, not retail packaging. The charger is sold separately.

Image 2: Information regarding bulk packaging.

Image 3: Notice indicating the charger is sold separately.
4. Setup
4.1 Initial Charging
Before first use, fully charge the battery. Refer to your RYOBI 40V battery charger's instruction manual for specific charging procedures. Ensure the battery and charger are compatible.
4.2 Battery Installation
To install the battery into a compatible RYOBI 40V tool:
- Align the battery with the battery port on the tool.
- Slide the battery into the port until it clicks securely into place. Ensure it is fully seated to prevent accidental dislodgement during operation.
4.3 Compatibility
This 6.0 Ah battery is designed to work with most RYOBI 40V lithium-ion tools. However, due to its 'fat pack' design, it may not fit older models of RYOBI mowers and chainsaws. Always reference the RYOBI compatibility chart or your tool's manual to ensure proper fit and function.

Image 4: Warning regarding battery size and compatibility with older tools.
5. Operating
5.1 Powering Your Tool
Once the battery is securely installed, operate your RYOBI 40V tool according to its specific instruction manual. The battery provides consistent, fade-free power throughout its discharge cycle.
5.2 Battery Charge Indicator
The battery features an onboard LED fuel gauge to indicate the remaining charge. Press the button on the battery to illuminate the LEDs. The number of illuminated LEDs corresponds to the approximate charge level:
- Four LEDs: Full charge
- Three LEDs: Approximately 75% charge
- Two LEDs: Approximately 50% charge
- One LED: Low charge, recharge soon
- No LEDs: Battery is discharged, recharge immediately
6. Maintenance
6.1 Cleaning
Keep the battery terminals clean and free of debris. Use a clean, dry cloth to wipe down the battery. Do not use water, solvents, or harsh chemicals.
6.2 Storage
For optimal battery life and performance:
- Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.
- Avoid storing the battery in temperatures below 32°F (0°C) or above 104°F (40°C).
- For long-term storage, it is recommended to store the battery with a partial charge (e.g., 50-75%). Fully discharging or fully charging for extended periods can reduce battery life.
- Remove the battery from the tool when not in use.
7. Troubleshooting
7.1 Battery Not Charging
- Ensure the battery is properly seated in the charger.
- Verify the charger is plugged into a working power outlet.
- Check for any error indicators on the charger (e.g., flashing red light, which may indicate a faulty battery or charger).
- If the charger indicates a fault, try a different RYOBI 40V battery (if available) to determine if the issue is with the battery or the charger.
7.2 Battery Not Powering Tool
- Ensure the battery is fully charged. Check the fuel gauge.
- Verify the battery is securely installed in the tool.
- Confirm the tool is compatible with this 6.0 Ah 'fat pack' battery.
- If the tool still does not operate, refer to the tool's instruction manual for further troubleshooting.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | RYOBI |
| Model Number | OP40602 |
| Voltage | 40 Volts |
| Amperage | 6 Amps |
| Battery Cell Composition | Lithium Ion |
| Battery Capacity | 6 Amp Hours (Ah) |
| Item Weight | 4.24 pounds |
| Product Dimensions (L x W x H) | 7.25 x 4 x 4.45 inches |
| Recommended Uses | Power Tool |

Image 5: RYOBI 40V 6.0 Ah battery with key dimensions.
9. Warranty Information
Specific warranty details for the RYOBI 40V 6.0 Ah Lithium-ion High Capacity Battery (Model OP40602) are typically provided at the time of purchase or can be found on the official RYOBI website. Please retain your proof of purchase for warranty claims.
For the most current and accurate warranty information, please visit the official RYOBI website or contact their customer service directly.
10. Support
If you require further assistance or have questions not covered in this manual, please contact RYOBI customer support. You can typically find contact information on the official RYOBI website or on the product packaging.
When contacting support, please have your battery model number (OP40602) and any relevant purchase information readily available.





