1. Introduction
This manual provides essential information for the safe and effective use of EEMB 3.7V Rechargeable LIR2032H Lithium-ion Coin Cell Batteries. Please read this manual thoroughly before using the product.
2. Safety Warnings and Precautions
WARNING: Failure to follow these safety instructions may result in fire, electric shock, injury, or damage to the product or property.
- Do not overlap or mix batteries in a disorderly way.
- Do not mix batteries with other objects (e.g., metal objects, keys).
- If the positive and negative terminals touch each other, it will cause SHORT CIRCUIT or EXPLOSIONS.
- Charge the battery ONLY with an EEMB dedicated charger.
- Keep out of reach of children. Do NOT SWALLOW.
- Keep away from fire and heat.
- Do not solder directly on the battery.
- Do not mix old, new, different brands, or types of batteries.
- Do not stack batteries.
- Do not disassemble or puncture the battery.
- Avoid direct sunlight, high temperature, and high humidity.
- Do not use the positive and negative poles of the battery in reverse.
- Store batteries in their original packaging. Ensure batteries are NOT touching each other.
- The battery may not be suitable for some LED candles and tea lights due to voltage differences.
3. Product Specifications
The EEMB LIR2032H is a 3.7V rechargeable Lithium-ion coin cell battery. Key specifications are detailed below:
| Specification | Value |
|---|---|
| Nominal Voltage | 3.7V |
| Nominal Capacity | 70mAh |
| Max. Charge Current | 70mA |
| Standard Charge Current | 14mA |
| Standard Discharge Current | 14mA |
| Max. Charge Voltage | 4.2V |
| Discharge Cut-off Voltage | >2.75V |
| Diameter | 20mm (0.79") |
| Height | 3.2mm (0.13") |
| Weight | Approximate 3.15g (0.01 Kilograms) |
| Charge Temperature Range | 0°C ~ +45°C [32°F ~ +113°F] |
| Discharge Temperature Range | -20°C ~ +60°C [-4°F ~ +140°F] |
| Electrochemical System | Lithium-ion battery |
| Cycle Life | 300 cycles (45mAh Discharge Each Time) |
| Charging Time | 2-5 hours |
Comparison with other battery types:
The LIR2032H battery is a rechargeable Lithium-ion type, distinct from ML2032 (rechargeable Li-MnO2) and CR2032 (non-rechargeable Li-MnO2) batteries. It offers a higher nominal voltage of 3.7V compared to the 3V of ML2032 and CR2032, and is designed for deep and high current discharge with fast charge capabilities.
4. Setup and Charging Instructions
To ensure optimal performance and safety, follow these instructions for setting up and charging your EEMB LIR2032H batteries.
4.1 Initial Charge
Upon receipt, it is recommended to charge the batteries every three months to maintain their voltage, especially during long periods of disuse.
4.2 Charging Procedure
- Use ONLY an EEMB dedicated charger for LIR2032H batteries. Using other chargers may damage the batteries or pose safety risks.
- Insert the LIR2032H batteries into the designated slots of the charger, ensuring correct polarity (+ and -).
- Connect the charger to a suitable power source. The charger adapter is typically not included and must be provided by the user.
- Allow the batteries to charge for 2-5 hours, or until the charger indicates a full charge.
5. Application and Compatibility
EEMB LIR2032H batteries are suitable for various electronic products requiring a 3.7V coin cell battery.
5.1 Compatible Devices
- Bluetooth Earphones
- Light Game Controllers
- Solar Keyboards
- Garmin Forerunner 10
- Smart Watches
- Car Keys / Remote Key Fobs
- Weather Stations
- LED Lights
- Solar flashlights
- Sensors
- Solar welding helmets
5.2 Important Compatibility Note
Due to their 3.7V nominal voltage, these batteries may not be suitable for all devices designed for standard 3V CR2032 batteries, such as some LED candles and tea lights. Always verify the voltage requirements of your device before use.
6. Storage and Maintenance
Proper storage and maintenance extend the lifespan and ensure the safety of your EEMB LIR2032H batteries.
- Storage Condition: Keep the cells in a 40%-60% charged state during a long period of unused time.
- Recharge Frequency: We recommend charging the battery every three months upon receipt to maintain the voltage.
- Storage Environment: Store the battery in a cool and dry place, away from direct sunlight, high temperatures, and high humidity.
- Packaging: Store batteries in their original packaging to prevent accidental short circuits. Ensure individual batteries are not touching each other.
- Disposal: Dispose of used batteries according to local regulations. Do not dispose of in household waste.
7. Troubleshooting
If you encounter issues with your EEMB LIR2032H batteries, consider the following:
- Device Malfunction after Installation:
The LIR2032H battery has a nominal voltage of 3.7V, which can reach up to 4.2V when fully charged. This is higher than the 3V of standard CR2032 batteries. Some devices designed for 3V batteries may not function correctly or could be damaged by the higher voltage. Always check your device's voltage requirements. If your device stops working after installing an LIR2032H, try a standard 3V CR2032 battery to confirm if voltage incompatibility is the issue.
- Battery Not Charging:
Ensure you are using an EEMB dedicated charger. Verify that the charger is properly connected to a power source and that the batteries are inserted with correct polarity. If the issue persists, the battery might be over-discharged (below 2.7V) or damaged. Lithium-ion batteries should not be discharged below their cut-off voltage to prevent damage.
- Short Battery Life:
Ensure the battery is fully charged before use. Check if the device has high power consumption. For long-term storage, ensure batteries are charged to 40-60% capacity and recharged every three months. Extreme temperatures can also affect battery performance and lifespan.
8. Certifications
EEMB LIR2032H batteries meet stringent safety and quality standards.
- UL Certified: Safety tested by UL according to IEC 62133 standards. Over 400 EEMB battery models are UL certified. You can search "MH20555" on the UL website (www.UL.com) for certification information.
- Environmental Compliance: These batteries are Lead-Free, Mercury-Free, and Cadmium-Free.
- Other Certifications: UN38.3, CE, RoHS, IEC.
9. Warranty and Support
EEMB is committed to customer satisfaction and has over 20 years of experience in the lithium battery industry.
- Customer Service: If you have any questions about the product, please contact EEMB via Amazon message. Responses are typically provided within 24 hours.
- Returns: The product is eligible for a 30-day refund/replacement return policy.
