Introduction
This manual provides essential information for the safe and effective use of your Plantronics 202599-03 replacement battery. This battery is designed for specific Plantronics wireless headset systems, ensuring optimal performance and compatibility. Please read these instructions carefully before installation and use.
Safety Information
WARNING: Failure to follow these safety instructions could result in fire, electric shock, injury, or damage to the product or other property.
- Do not disassemble, open, crush, bend, deform, puncture, or shred the battery.
- Do not modify or remanufacture the battery, attempt to insert foreign objects into the battery, or immerse or expose it to water or other liquids.
- Do not expose the battery to fire, explosion, or other hazards.
- Only use the battery for the system for which it is specified.
- Dispose of batteries according to local regulations. Do not dispose of batteries in household waste.

Image 1: Plantronics 202599-03 replacement battery. The battery features warning symbols indicating caution, no open flames, do not dispose of in regular trash, and a recycling symbol.
Compatibility
This Plantronics 202599-03 replacement battery is compatible with the following Plantronics wireless headset systems:
- Plantronics W410
- Plantronics W410-M
- Plantronics W420
- Plantronics W420-M
- Plantronics W710
- Plantronics W710-M
- Plantronics W720
- Plantronics W720-M
- Plantronics CS510
- Plantronics CS520
- Plantronics CS510-XD
- Plantronics CS520-XD
Ensure your headset model is listed above before attempting installation.
Installation
- Power Off Headset: Before beginning, ensure your Plantronics wireless headset is completely powered off and disconnected from any charging source.
- Locate Battery Compartment: Refer to your specific headset model's user guide to locate and open the battery compartment. This usually involves removing a cover or panel.
- Remove Old Battery: Carefully disconnect the old battery's connector from the headset's port. Gently remove the old battery from its compartment.
- Insert New Battery: Align the connector of the new Plantronics 202599-03 battery with the port in the headset. Gently push the connector until it is securely seated.
- Position Battery: Place the new battery into the compartment, ensuring it fits snugly without forcing.
- Close Compartment: Replace the battery compartment cover or panel, ensuring it is securely closed.
- Initial Charge: It is recommended to fully charge the new battery before its first use.
For detailed visual instructions, consult the original user manual for your specific Plantronics headset model.
Operating and Charging
The Plantronics 202599-03 battery is a rechargeable Lithium-ion battery. Follow these guidelines for optimal operation and charging:
- First Use: Fully charge the battery before its initial use to ensure maximum capacity.
- Charging: Use only the original Plantronics charging base or cable provided with your headset system. Charging times may vary.
- Usage: The battery powers your wireless headset. Battery life will vary depending on usage patterns, volume levels, and distance from the base unit.
- Low Battery Indicator: Your headset system will typically provide an audible or visual indicator when the battery level is low. Charge the battery promptly when this occurs.
Maintenance
Proper maintenance can extend the life of your battery:
- Storage: If storing the headset for an extended period, ensure the battery is partially charged (around 50%) and store it in a cool, dry place. Avoid storing fully charged or fully depleted.
- Temperature: Avoid exposing the battery to extreme temperatures, both hot and cold, as this can degrade performance and lifespan.
- Cleaning: Keep the battery contacts clean and free of debris. Use a dry, soft cloth if cleaning is necessary.
- Disposal: When the battery reaches the end of its life, dispose of it responsibly according to local electronic waste regulations. Do not incinerate or dispose of with general household waste.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headset not powering on after battery replacement. | Battery not properly connected or not charged. | Ensure the battery connector is securely seated. Place the headset on its charging base for at least 30 minutes. |
| Battery life is shorter than expected. | Battery not fully charged, aging battery, or high usage. | Ensure the battery is fully charged. If the battery is old, it may be nearing the end of its lifespan and require replacement. Reduce volume or usage time. |
| Headset not charging. | Improper placement on charging base, faulty charging base/cable, or battery issue. | Verify the headset is correctly seated on the charging base. Check the charging cable and power adapter. If the issue persists, the battery or charging system may be faulty. |
Specifications
| Model Number | 202599-03 |
| Brand | Plantronics |
| Battery Type | Lithium-ion |
| Reusability | Rechargeable |
| Number of Batteries | 1 C-cell (included) |
| Battery Weight | 8 Grams |
| Item Dimensions (L x W x H) | 12.7 x 16.5 x 0.3 centimeters |
| Capacity | 2000 (unit not specified, refer to device specifications) |
Note: Specifications are subject to change without notice. For the most accurate and up-to-date information, please refer to the official Plantronics website or your headset's original documentation.
Support and Warranty
For technical support, warranty information, or further assistance, please visit the official Plantronics (now Poly) support website or contact their customer service. Keep your purchase receipt as proof of purchase.
You can find more information at the Plantronics Brand Store on Amazon.