What is an ER26500 Battery?
The ER26500 is a primary (non-rechargeable) lithium battery that uses lithium-thionyl chloride (Li-SOCl₂) chemistry. It features a cylindrical shape and delivers a nominal voltage of 3.6V. The designation "ER26500" refers to its dimensions—26.2 mm in diameter and 50.5 mm in height—making it a standard ‘C’ size battery.
Known for its high energy density and stable voltage output, the ER26500 is ideal for applications requiring long-lasting, reliable power. It is commonly used in devices such as water meters, GPS trackers, industrial sensors, and security systems—particularly in environments where battery replacement is difficult or infrequent. Its robust performance and extended service life make it a preferred choice for critical, low-maintenance applications.
ER26500 Battery Datasheet
Understanding the details in an ER26500 lithium battery datasheet is important. This will help you ensure it meets your device's power needs. Let's look at common specifications for an ER 26500 battery:
| Specification | Detail |
|---|
| Type | Non-rechargeable lithium battery |
| Chemistry | Lithium Thionyl Chloride (Li-SoCl2) |
| Nominal Voltage | 3.6V |
| Nominal Capacity | 8500-9000mAh |
| Max Continuous Discharge Current | 200 mA |
| Max Pulse Discharge Current | 400 mA |
| Dimension | C size; Diameter: 26.2mm; Height: 50.5mm |
| Weight | 55g |
| Operating Temp. | -55°C to +85°C |
| Self-Discharge Rate | ≤1% per year at 25°C |
| Shelf Life | Up to 10 years |
| Terminal Options | Standard, Solder Tabs, Axial Pins, Custom |
Key Features and Performance of ER26500 Batteries
The ER26500 3.6V lithium battery offers a range of high-performance features that make it ideal for demanding applications:
High Energy Density: With an energy density of up to 590 Wh/kg, the ER26500 delivers substantial power in a compact size, supporting long-term operation without frequent replacements.
Stable High Voltage: Unlike standard alkaline batteries that provide 1.5V, the ER26500 maintains a consistent 3.6V output, making it well-suited for devices requiring higher voltage and stable performance.
Wide Operating Temperature Range: Designed for harsh environments, the ER26500 functions reliably in temperatures ranging from -55°C to +85°C, making it suitable for both industrial and outdoor use.
Low Self-Discharge Rate: This battery retains its charge exceptionally well, with a self-discharge rate of less than 1% per year at 25°C, ensuring long-term reliability even during storage.
Extended Shelf Life: The ER26500 can be stored at room temperature for up to 10 years without significant capacity loss, making it ideal for backup power systems and emergency applications.
These features make the ER26500 a preferred choice for long-life, maintenance-free power in critical devices.
Typical Applications of ER26500 Lithium Batteries
Thanks to their outstanding features, ER26500 lithium batteries are widely used across various industrial and everyday applications. Below are some common uses and reasons why the ER26500 is a top choice:
1. Smart Utility Meters
ER26500 batteries are commonly used in smart meters for electricity, gas, and water. These meters require long-lasting, stable power to accurately monitor consumption over extended periods. Often installed outdoors or in hard-to-access locations, these devices benefit from the ER26500’s low self-discharge rate and steady 3.6V output, enabling years of maintenance-free operation and reducing overall upkeep costs.
2. Medical Devices
Portable medical devices such as infusion pumps, blood glucose meters, and automated external defibrillators (AEDs) demand reliable and safe power sources. ER26500 batteries provide consistent voltage, operate effectively across a wide temperature range, have minimal leakage risk, and offer long shelf life—making them ideal for critical healthcare equipment.
3. Security Systems and Alarms
Security systems, including smoke detectors, intrusion alarms, and panic buttons, require uninterrupted power to ensure continuous protection. The ER26500 delivers strong, stable energy, maintaining system functionality even during power outages, which is vital for reliable security monitoring.
4. Industrial IoT Sensors
Factories and industrial plants deploy IoT sensors to monitor conditions like temperature, humidity, and pressure in challenging environments. ER26500 batteries provide durable, long-lasting power necessary for real-time, accurate data transmission from these often remote or harsh locations.
5. GPS Devices
ER26500 3.6v battery are well-suited for GPS trackers used in vehicles, shipping containers, or wildlife collars. Their compact size, extended lifespan, and excellent performance in extreme temperatures enable these devices to operate continuously for months or even years without frequent battery changes, ensuring reliable location tracking.
How to Choose a Reliable ER26500 C-Size Battery
Selecting the right ER26500 lithium battery is essential to ensure your device operates efficiently and enjoys a long service life. Consider the following key factors when making your choice:
Power Requirements: Ensure the battery meets your device’s voltage and capacity needs.
Operating Conditions: Choose a battery that can withstand the temperature and environmental conditions where it will be used.
Size Compatibility: Confirm the battery dimensions match your device specifications.
Brand and Quality: Opt for reputable manufacturers to guarantee performance and safety.
Price and Order Size: Balance cost-effectiveness with quality, especially for bulk purchases.
A well-chosen battery improves device reliability and reduces the frequency of replacements.
Safety Tips When Using ER26500 Lithium Batteries
The ER26500 lithium battery is powerful and reliable, but proper handling is vital for safety and longevity. Follow these guidelines to ensure safe use:
Store batteries in a cool, dry place.
Do not recharge primary ER26500 batteries.
Avoid short circuits by keeping terminals insulated.
Do not crush, drop, or open the battery.
Regularly inspect batteries for signs of damage or leakage.
Keep batteries out of reach of children and pets.
Dispose of used batteries through proper recycling channels.
Adhering to these safety tips will help you maximize performance while minimizing risks.
Conclusion
The ER26500 battery is an excellent choice for devices that require reliable, long-lasting power in demanding environments. Widely used in utility meters, security systems, and medical equipment, it delivers consistent high performance and durability. Its high energy density, low self-discharge rate, and broad operating temperature range make it a trusted solution across various industries. To maximize the benefits of ER26500 lithium batteries, it’s important to understand their functionality, typical applications, and safe handling practices. When selecting an ER26500 battery, prioritize quality and reliability by purchasing from reputable suppliers to ensure optimal performance and safety.
Frequently Asked Questions
What devices are ideally suited for a 3.6V ER26500 battery?
The 3.6V ER26500 battery is well-suited for devices requiring a dependable and long-lasting power source, especially those operating in extreme temperatures. It is commonly used in water, gas, and electric meters, as well as in security systems and medical equipment.
Can I recharge an ER26500 battery?
No, ER26500 batteries are primary lithium cells designed for single use and cannot be recharged. Attempting to recharge them may cause overheating, leakage, or damage. Always follow the manufacturer’s safety instructions.
Are ER26500 batteries safe for outdoor use?
Yes, ER26500 batteries are designed to perform safely in outdoor environments, operating effectively within a temperature range of -55°C to +85°C. Proper care and protection from extreme weather conditions will help maintain their safety and performance.
