1. Introduction
This manual provides essential information for the safe and effective use of your Technical Precision replacement battery for the AT&T SL82318 cordless phone. This product is designed to provide reliable power to your compatible cordless telephone. Please read these instructions carefully before installation and retain them for future reference.
Note: This battery is a replacement part manufactured by Technical Precision and is not an original AT&T product.

Image showing the Technical Precision replacement battery pack, designed for AT&T SL82318 cordless phones.
2. Safety Information
To prevent damage to the battery, phone, or personal injury, observe the following safety precautions:
- Do not disassemble, crush, puncture, or short-circuit the battery.
- Do not expose the battery to high temperatures (above 60°C / 140°F) or direct sunlight.
- Do not dispose of the battery in fire or water.
- Keep the battery out of reach of children.
- Use only the specified charging system for your cordless phone.
- If the battery leaks, avoid contact with skin and eyes. If contact occurs, rinse immediately with water and seek medical attention.
- Dispose of used batteries according to local regulations.
3. Package Contents
Your package should contain the following item:
- One (1) Technical Precision Replacement Battery for AT&T SL82318 Cordless Phone
4. Setup and Installation
Follow these steps to install the replacement battery in your AT&T SL82318 cordless phone:
- Disconnect Power: Ensure your cordless phone handset is disconnected from its charging base.
- Locate Battery Compartment: Turn the handset over and locate the battery compartment cover, usually on the back.
- Remove Cover: Slide or unclip the battery compartment cover to open it.
- Remove Old Battery: Carefully disconnect the old battery pack from its connector and remove it from the compartment.
- Insert New Battery: Connect the new Technical Precision replacement battery to the phone's battery connector, ensuring the polarity is correct. Gently place the battery into the compartment.
- Close Compartment: Replace the battery compartment cover, ensuring it clicks securely into place.
- Initial Charge: Place the handset on its charging base. Allow the phone to charge continuously for 12-16 hours before its first use, even if the display indicates a full charge sooner. This ensures optimal battery performance and longevity.
5. Operating Instructions
Once installed and fully charged, your replacement battery operates like the original. The phone's display will indicate battery status. Recharge the handset whenever the battery indicator shows low power or when the phone is not in use.
6. Maintenance
Proper maintenance extends the life of your battery:
- Storage: If storing the battery for an extended period, keep it in a cool, dry place away from direct sunlight and extreme temperatures.
- Cleaning: Keep the battery contacts clean. Use a dry, soft cloth to wipe them if necessary.
- Disposal: When the battery reaches the end of its life, do not dispose of it with household waste. Recycle it at an authorized battery recycling center.
7. Troubleshooting
If you encounter issues with your replacement battery, consider the following:
- Phone Not Turning On:
- Ensure the battery is correctly installed and securely connected.
- Verify the phone is properly seated on the charging base and the base is powered.
- Allow for the initial 12-16 hour charge period.
- Short Talk Time/Poor Battery Life:
- Ensure the battery has completed its initial charge cycle.
- The battery may not be fully charged. Place the handset on the charger for an extended period.
- Over time, all rechargeable batteries lose capacity. If the battery is old, it may need replacement.
8. Specifications
| Brand | Technical Precision |
| Model Number | SL82318 CORDLESS PHONE BATTERY |
| Battery Cell Composition | Lithium Ion |
| Battery Capacity | 1200 Milliamp Hours |
| Recommended Use | Cordless Phone |
| Reusability | Rechargeable |
9. Warranty and Support
This Technical Precision replacement battery comes with a 1-Year Manufacturer Warranty.
For warranty claims, technical support, or any questions regarding your product, please contact Technical Precision directly through your purchase platform or their official website. Please have your purchase details and product model number (SL82318 CORDLESS PHONE BATTERY) available when contacting support.