Introduction
This manual provides essential information for the safe and effective use of Renata 377 SR626SW 1.55V Silver Oxide Watch Batteries. These high-quality, Swiss-made batteries are designed for reliable performance in various small electronic devices.
Safety Information
Please read and follow these safety instructions carefully to prevent injury or damage to your device.
- Keep out of reach of children: Button cell batteries can be swallowed and cause serious injury or death. Seek immediate medical attention if a battery is swallowed.
- Do not recharge: These batteries are single-use and not rechargeable. Attempting to recharge may cause leakage, fire, or explosion.
- Do not disassemble or short-circuit: This can lead to heat generation, leakage, or explosion.
- Do not expose to high temperatures: High temperatures can damage the battery and cause leakage or explosion.
- Dispose of properly: Follow local regulations for battery disposal. Do not dispose of in fire.
- Avoid skin and eye contact: In case of leakage, avoid contact with skin and eyes. If contact occurs, rinse immediately with water and seek medical attention.
Product Overview
The Renata 377 SR626SW is a 1.55V silver oxide button cell battery, known for its superior leakage resistance and consistent performance. It is commonly used in watches and other small electronic devices requiring a compact, reliable power source.

Image: Renata 377 SR626SW batteries in blister packaging, alongside a single battery with its key specifications (Voltage, Capacity, Diameter, Height, IEC equivalent).
Key features include:
- Superior leakage resistance.
- High capacity retention during storage (low self-discharge).
- Swiss quality manufacturing for consistent performance.
- Mercury-free composition.
Setup and Installation
This section outlines the general procedure for installing the Renata 377 SR626SW battery. Specific installation steps may vary depending on your device (e.g., watch model). Always refer to your device's instruction manual for precise battery replacement procedures.
- Identify Battery Compartment: Locate the battery compartment on your device. For watches, this is typically on the back casing.
- Open Compartment: Carefully open the battery compartment using appropriate tools (e.g., a small screwdriver or watch case opener). Exercise caution to avoid damaging the device or yourself.
- Remove Old Battery: Gently remove the old battery. Note its orientation (positive (+) and negative (-) terminals).
- Insert New Battery: Insert the new Renata 377 SR626SW battery, ensuring the correct polarity. The positive (+) side is usually marked and should face upwards or as indicated by your device.
- Secure Compartment: Close the battery compartment securely. Ensure any seals or gaskets are properly seated to maintain water resistance, if applicable.
- Test Device: Verify that your device powers on and functions correctly.

Image: A hand carefully inserting a Renata button cell battery into the designated slot of a watch, illustrating the installation process.
If you are unsure about the installation process, it is recommended to seek assistance from a qualified technician or watchmaker.
Operating Instructions
Once correctly installed, the Renata 377 SR626SW battery will provide power to your compatible device. No specific operating instructions are required for the battery itself, as its function is to supply consistent voltage to the device it powers. Refer to your device's manual for its operational guidelines.
These batteries are suitable for a wide range of applications, including:
- Watches
- Calculators
- Small electronic toys
- Cameras
- Car security alarms and keyless remotes
- Organizers and computer equipment (memory backup)
Maintenance
Renata 377 SR626SW batteries are designed for maintenance-free operation. However, proper storage and disposal are important for safety and environmental responsibility.
- Storage: Store unused batteries in their original packaging in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid storing with metal objects to prevent short-circuiting.
- Disposal: Do not dispose of used batteries in household waste. Recycle them according to local regulations for battery disposal. Many retail stores and recycling centers offer battery collection services.
Troubleshooting
If your device is not functioning after battery replacement, consider the following:
- Incorrect Polarity: Ensure the battery is inserted with the correct positive (+) and negative (-) orientation.
- Incorrect Battery Type: Verify that you are using the correct battery type (Renata 377 SR626SW) as specified by your device manufacturer.
- Poor Contact: Check for any debris or corrosion in the battery compartment that might prevent proper electrical contact. Clean contacts gently if necessary.
- Device Malfunction: If the battery is correctly installed and new, the issue might be with the device itself. Consult your device's troubleshooting guide or a professional repair service.
Specifications
| Brand | Renata |
| Model Number | 377 (SR626SW) |
| Battery Cell Composition | Silver Oxide |
| Nominal Voltage | 1.55 Volts |
| Nominal Capacity | 24 Milliamp Hours (mAh) |
| Reusability | Single Use |
| Unit Count | 2.0 Count (per package) |
| Battery Weight | 1 Gram |
| Item Dimensions (L x W x H) | 0.1 x 0.27 x 0.1 inches |
| Recommended Uses | Watches, small electronics |
Warranty and Support
For specific warranty information regarding your Renata batteries, please refer to the packaging or contact Renata customer support directly. Renata is committed to providing high-quality products.
For further assistance or inquiries, please visit the official Renata website or contact their customer service department. You can find more information about Renata products at: Renata Store on Amazon.





