1. Introduction
This manual provides essential instructions for the safe and effective use of your FITE ON 5V Charger Adapter. Please read this manual thoroughly before using the product and retain it for future reference. This charger adapter is designed to provide reliable power for compatible Phonak hearing aid charging cases.
Compatible Devices: Phonak Case Go, BTE, RIC, Combi, Ease Life, Slim, PartnerMic, Audeo (models P90R, L90R, P90, B90, L90, R 0459).
2. Package Contents
Before proceeding with setup, please ensure all items are present in the package:
- 1 x FITE ON 5V Charger Adapter
- 1 x USB Charging Cord

Image: The FITE ON 5V Charger Adapter and its accompanying USB charging cord.
3. Setup Instructions
- Unpack: Carefully remove the charger adapter and USB cord from their packaging.
- Connect USB Cord: Insert the USB-A end of the charging cord into the USB port on the FITE ON charger adapter.
- Connect to Device: Insert the other end of the USB charging cord into the charging port of your compatible Phonak hearing aid charging case.
- Plug into Power Outlet: Plug the FITE ON charger adapter into a standard wall power outlet (100-240VAC, 50/60Hz).

Image: A Phonak hearing aid charging case connected to the FITE ON charger adapter, which is plugged into a wall outlet, demonstrating the setup for charging.
4. Operating Instructions
Once the charger adapter is properly connected to a power outlet and your device, the charging process will begin automatically. The charging indicator on your Phonak hearing aid charging case will typically illuminate to confirm charging status.
- Ensure the connection between the charger, USB cord, and your device is secure.
- The charger provides a steady output voltage and current for efficient charging.
- No physical noise should be emitted from the charger during operation.

Image: A collage showing different Phonak hearing aid charging cases, including Case Go, BTE, RIC, and Audeo models, illustrating the charger's universal compatibility with these devices.
5. Maintenance
To ensure the longevity and optimal performance of your FITE ON 5V Charger Adapter, follow these maintenance guidelines:
- Cleaning: Disconnect the charger from the power outlet before cleaning. Use a soft, dry cloth to wipe the surface of the adapter. Do not use liquid cleaners or abrasive materials.
- Storage: Store the charger adapter and USB cord in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Handling: Avoid bending or twisting the USB cord excessively, as this can damage the internal wires. Do not pull the cord to disconnect from the outlet; always grasp the adapter plug.
6. Troubleshooting
If you encounter issues with your charger adapter, please refer to the following common troubleshooting steps:
- Device Not Charging:
- Ensure the charger adapter is securely plugged into a working wall outlet.
- Verify that the USB cord is firmly connected to both the charger adapter and your Phonak device's charging case.
- Check if the wall outlet is functional by plugging in another device.
- Important: Double-check the connector end of the USB cord and your machine model before purchasing to ensure compatibility.
- Slow Charging:
- Ensure you are using the provided FITE ON USB cord, as third-party cables may affect charging speed.
- Avoid using extension cords or power strips if possible, as they can sometimes reduce power delivery.
- Charger Feels Warm:
- It is normal for the charger to feel slightly warm during operation. If it becomes excessively hot, disconnect it immediately and contact support.
7. Specifications
| Feature | Description |
|---|---|
| Input Voltage | 100-240VAC, 50/60Hz (World Wide Input) |
| Output Current | 2 Amps |
| Connector Type | Round (for adapter to wall), USB (for cord to device) |
| Special Feature | Short Circuit Protection, Over Voltage Protection (OVP), Over Current Protection (OCP), Short Circuit Protection (SCP) |
| Included Components | 1 adapter, 1 USB cord |
| Item Weight | 3 ounces |
8. Safety Information
Your FITE ON charger adapter is designed with multiple safety features to protect your devices and ensure safe operation:
- Fire-Resistant Shell: The adapter casing is constructed from fire-resistant materials.
- Short Circuit Protection (SCP): Automatically cuts off power in case of a short circuit to prevent damage.
- Over Voltage Protection (OVP): Protects your device from excessive voltage input.
- Over Current Protection (OCP): Prevents damage from excessive current flow.
- Over Heated Protection: Designed to prevent overheating during operation.
- The product is UL Listed and FCC certified, indicating compliance with safety standards.

Image: The FITE ON charger adapter with icons indicating its safety features, including a fire-resistant shell, short circuit protection, and overheat protection.

Image: Documents displaying the Certificate of Compliance (UL) and Test Report (FCC) for the FITE ON charger adapter, confirming its adherence to safety and quality standards.
9. Warranty and Support
For any questions, concerns, or technical support regarding your FITE ON 5V Charger Adapter, please contact FITE ON customer support through the retailer's platform or the official FITE ON website. Please have your product model and purchase information ready when contacting support.