Introduction
This instruction manual provides essential information for the proper use, installation, and maintenance of your Uniden BT-446 Nickel Metal Hydride (NiMH) rechargeable cordless phone battery. Please read this manual thoroughly to ensure optimal performance and longevity of your battery.
The Uniden BT-446 is a 3.6V, 800mAh NiMH battery designed to power compatible Uniden cordless telephones, providing reliable and long-lasting performance.
Product Overview
Key Features
- Nickel Metal Hydride (NiMH) chemistry for reliable power.
- 3.6 Volts (DC) output.
- 800 milliampere-hour (mAh) capacity.
- Rechargeable design for extended use.
Specifications
| Specification | Value |
|---|---|
| Model Number | BT-446 |
| Battery Cell Composition | NiMH |
| Voltage | 3.6V |
| Capacity | 800mAh |
| Reusability | Rechargeable |
| Item Dimensions (L x W x H) | 1.94 x 1.15 x 0.25 inches |
| Item Weight | 1.44 ounces |
Image: The Uniden BT-446 rechargeable cordless phone battery, showing its compact design and label with specifications.
Image: The Uniden BT-446 battery with indicated dimensions (1.25 inches height, 1.94 inches width), useful for verifying fit.
Compatibility
The Uniden BT-446 battery is compatible with a wide range of Uniden cordless phone models. It also serves as a direct replacement for the BT909 battery model.
Compatible Uniden Cordless Phone Models:
- DCT Series: DCT646, DCT6465, DCT648, DCT6485, DCX640, DCT746, DCT746M, DCT748, DCT7488, DCX700
- TRU Series: TRU446, TRU4465, TRU448, TRU4485, TXC400, TRU5860, TRU5860-2, TRU5865, TRU5865-2, TRU5885, TRU5885-2, TXC580, TRU8860, TRU8865, TRU8880, TRU8885, TRU8888, TRU8866, TCX800, TCX805, TCX860, TRU9460, TRU9465, TRU9480, TRU9485, TRU9488, TRU9466, TRU9496, TCX905, TRU9565, TRU9585, TCX950
- TWX & WXI Series: TWX955, TWX977, WXI477
Setup and Installation
Battery Installation
Follow these steps to install or replace the battery in your compatible Uniden cordless phone handset:
- Locate Battery Compartment: Turn your cordless phone handset over and locate the battery compartment cover. This is typically on the back of the handset.
- Remove Cover: Slide or unclip the battery compartment cover to open it. You may need a small screwdriver for some models.
- Disconnect Old Battery (if applicable): If replacing an old battery, carefully disconnect its connector from the phone's circuit board. Gently pull on the connector, not the wires.
- Insert New Battery: Place the new Uniden BT-446 battery into the compartment, ensuring it fits snugly.
- Connect Battery: Align the battery connector with the corresponding port inside the battery compartment. Push firmly until it clicks into place. Ensure the polarity is correct (red wire to red, black wire to black, if visible).
- Secure Cover: Replace the battery compartment cover, ensuring it is securely closed.
Image: Close-up view of the Uniden BT-446 battery connector, showing the two-pin configuration for proper connection to the phone handset.
Operating Instructions
Initial Charging
After installing the new battery, place the handset on its charging base for an initial charge. For optimal battery conditioning and to achieve full capacity, allow the battery to charge continuously for 15 to 24 hours before its first use, even if the phone indicates a full charge sooner.
Regular Charging
For daily use, it is recommended to return the handset to its charging base when not in use. This practice helps maintain the battery's charge and ensures it is ready for extended talk times.
Maintenance
Battery Care and Safety
- Proper Disposal: This battery contains materials that require special handling. It MUST be disposed of properly according to local regulations. Do not dispose of in household waste.
- Do Not Disassemble: Do not attempt to open, disassemble, or modify the battery pack. This can cause damage, leakage, or injury.
- Avoid Extreme Temperatures: Do not expose the battery to extreme heat (e.g., direct sunlight, near heaters) or cold. Store in a cool, dry place when not in use for extended periods.
- Clean Contacts: Periodically clean the metal contacts on both the battery and the phone's charging base with a dry cloth to ensure a good connection.
- Use Correct Charger: Only use the charging base provided with your Uniden cordless phone.
Troubleshooting
Common Issues and Solutions
- Phone Not Powering On: Ensure the battery is correctly installed and fully charged. Verify the phone is properly seated on the charging base.
- Battery Not Holding Charge: Confirm the initial 15-24 hour charge was completed. Ensure charging contacts are clean. If the issue persists after proper charging, the battery may need replacement.
- Short Talk Time: This can indicate the battery is not fully charged or is nearing the end of its lifespan. Ensure proper charging practices are followed.
- Handset Gets Warm During Charging: A slight warmth is normal. Excessive heat may indicate an issue with the battery or charger. Discontinue use and consult Uniden support.
Warranty and Support
Warranty Information
The Uniden BT-446 battery typically comes with an 18-month warranty from the date of purchase. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the warranty documentation included with your product or visit the official Uniden website.
Customer Support
If you encounter any issues not covered in this manual or require further assistance, please contact Uniden customer support. You can find contact information on the official Uniden website or in your phone's user manual.