ER9V 1200mAh Li-SOCl₂ 9V Lithium Battery
Long-life primary lithium battery for smoke alarms, wireless tracking devices, memory backup and other low-power standby applications.
| Parameter | Specification |
|---|---|
| Model | ER9V |
| Battery Type | Li-SOCl2 9V lithium battery |
| Rated Voltage | 10.8V |
| Nominal Capacity | 1.2Ah |
| Capacity Test Condition | 1mA at 25°C to 6V cut-off voltage |
| Maximum Recommended Continuous Discharge Current | 25mA |
| Maximum Pulse Current | 50mA |
| Recommended Storage Temperature | Up to 30°C |
| Operating Temperature Range | -60°C to +85°C |
| Weight | Approximately 34g |
| Maximum Dimensions | 48.8mm x 26.5mm x 17mm |
| Self-discharge | Less than 1% per year when stored at +25°C |
Custom ER9V Li-SOCl₂ Battery Manufacturer in China
VTCBATT ER9V is a 10.8V 1200mAh primary lithium battery using Li-SOCl₂ chemistry. It is designed for long-life standby applications that require low self-discharge, stable voltage output, and reliable operation over extended periods.
Unlike alkaline batteries, ER9V Li-SOCl₂ batteries are designed for long-term standby applications. They are commonly used in smoke alarms, wireless tracking devices, security systems, and memory backup modules.
Long-Life Standby Power
Wide Temperature Operation
OEM Assembly Ready
Resource
Full Certification & Extended Warranty
VTCBATT Li-SOCl2 batteries meet global certifications including CB, CE, UL, and UN38.3, and offer a 14-month warranty—two months longer than standard—to maximize customer confidence and profit.
VTCBATT Li-SOCl2 battery passed all the major global certifications, such as CB, CE, EN61000,IEC62133,MSDS.UN38.3,ROHS,UL,BIS,KC Certification,which makes your product more competitive.
Compared to a normal 12-month warranty, VTCBATT Li-SOCl2 batteries have 14-month warranty and two extra months for shipping and customs clearance ,which ensure the customer’s profit.
VTCBATT Production and Service
To meet the diverse demands of different customers,VTCBATT is noly only devoted to precise and standardized manufacturing in every process to ensure the highest-quality batteries, but also focuses on customized design and excellent service. By providing comprehensive support from pre-sales to after-sale ,VTCBATT cares customers’ feedback to establish long-term and win-win cooperation. Fast assistance and professional battery proposals are the core principle of our professional sales and technical engineers team.
From the raw materials mixing to the cell test, VTCBATT adopts an automatic manufacturing process to maximize production efficiency and enhance the batteries
quality, safety, and reliability. The entire manufacturing process is monitored and 100% tested before flowing to the next procedure to ensure zero defects before delivery.
Over the past 20 years, VTCBATT has built strong partnerships with customers in more than 50 countries worldwide. With reliable quality, responsive service, and tailored battery solutions, we have earned the trust of our clients—many of whom have maintained long-term cooperation and lasting friendships with us for over a decade. Together, we continue to grow and move forward toward a brighter future.
Applications of ER9V Li-SOCl₂ Primary Lithium Battery
ER9V Li-SOCl₂ batteries are designed for long-life, low-power electronic devices. They provide reliable standby power, low self-discharge, and stable voltage performance for applications such as safety equipment, monitoring systems, tracking devices, industrial instruments, and memory backup modules.
Suitable for low-power measurement and monitoring equipment requiring extended service intervals and stable long-term operation.
With low self-discharge, ER9V batteries support long-term operation in remote monitoring systems where battery replacement is difficult.
Suitable for smart metering applications requiring long operating life, stable voltage output, and minimal maintenance.
Supports low-current IoT devices deployed in remote locations where long service life and reduced maintenance are important.
ER9V batteries provide reliable long-term power for tracking devices where battery replacement is difficult.
Provides reliable standby energy for data retention and backup power applications.
Long standby life and stable voltage output make ER9V batteries suitable for smoke alarm systems requiring reliable operation over extended periods.
ER9V batteries provide reliable standby power for security systems and alarm devices.
ER9V Li-SOCl2 rechargeable battery Test Report
An ER9V Li-SOCl₂ battery is a long-life primary lithium battery designed for low-power electronic devices. It uses lithium thionyl chloride chemistry to provide low self-discharge, stable voltage performance, and extended standby operation.
The ER9V configuration is commonly used in smoke alarms, security systems, tracking devices, remote monitoring equipment, and memory backup applications. Its Li-SOCl₂ chemistry enables long service life with minimal maintenance in low-current electronic systems.
No. ER9V is a primary lithium battery and is not designed for recharging. Li-SOCl₂ chemistry is optimized for long-term standby operation. It offers very low self-discharge, high energy retention, and stable performance over extended periods.
A typical ER9V battery is specified with a 10.8V nominal voltage and 1200mAh nominal capacity based on Li-SOCl₂ primary lithium chemistry.
Actual capacity depends on discharge current, temperature, pulse load, and cut-off voltage. Engineers should evaluate the complete load profile for accurate battery selection.
An ER9V battery can provide multi-year service life in low-power standby applications due to its very low self-discharge.
Actual battery life depends on the application load, operating temperature, storage conditions, and required end-of-life voltage.
ER9V can be used in smoke alarm applications that require long standby life and low self-discharge.
Before selecting ER9V, check the alarm’s voltage range, standby current, pulse current, and end-of-life voltage requirements to ensure compatibility.
ER9V and alkaline 9V batteries use different chemistries and are designed for different applications. ER9V uses Li-SOCl₂ primary lithium chemistry, which is optimized for long-term standby applications, while alkaline 9V batteries are commonly used in general-purpose devices.
The main differences are self-discharge, voltage stability, temperature performance, and long-term energy retention. ER9V is better suited for equipment that remains in standby for months or years, while alkaline 9V batteries are typically selected for standard replaceable battery applications.
Before replacing an alkaline 9V battery with an ER9V, verify the device voltage range, current demand, terminal configuration, and end-of-life requirements.
ER9V can support short-duration pulse loads. A typical ER9V design can provide pulse current capability up to 50mA under specified test conditions.
For applications with sudden current demands, such as alarms or wireless communication devices, engineers should evaluate pulse duration, frequency, voltage drop, and recovery performance to ensure the battery matches the device requirements.
Yes. VTCBATT can customize ER9V batteries according to OEM requirements, including terminals, wires, labels, and packaging. Customers can provide their application details, and our engineers will help evaluate the suitable battery configuration.
