ER34615 3.6V 20Ah Li-SOCl2 Battery Pack for Smart Meters and IoT Devices
| Parameter | Specification |
|---|---|
| Model | ER34615 |
| Battery Type | Primary lithium thionyl chloride (Li-SOCl2) battery pack |
| Nominal Voltage | 3.6V |
| Rated Capacity | 20Ah, discharged to 2.0V at 2mA (23±3°C) |
| Pack Dimensions | 35.0*63.0mm Max |
| Weight | Approx. 110g |
| Standard Discharge Current | 2mA to 2.0V |
| Maximum Constant Discharge Current | 150mA |
| Maximum Pulse Current | 300mA |
| Ambient Temperature Range | -55~+85°C |
ER34615 3.6V 20Ah Li-SOCl2 battery pack for Smart water meters, Gas meters, Smart agriculture sensor nodes
The ER34615 3.6V 20Ah Li-SOCl2 battery pack is designed for long-life primary power applications that require stable operation, compact cylindrical packaging, and reliable low-current output. According to the product specification, the pack provides 20Ah rated capacity when discharged to 2.0V at 2mA under 23±3°C conditions, with a nominal voltage of 3.6V, 35.0*63.0mm Max pack dimensions, approximate 110g weight, 150mA maximum constant discharge current, and 300mA maximum pulse current. The ambient temperature range is -55~+85°C, and the storage life is specified as at least 10 years with yearly self-discharge of no more than 2%. VTCBATT supplies this lithium thionyl chloride battery pack for OEM/ODM battery projects, offering factory-direct sample development, connector and wire matching, label support, and stable batch supply for equipment manufacturers, distributors, and battery wholesale customers.
Long-Life Standby Power
20Ah rated capacity and a storage life of at least 10 years support long service intervals in low-current devices.


Wide Temperature Operation
Pulse Current Support


OEM Pack Assembly Ready
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.
Application for ER34615 Li-SOCl2 battery
This ER34615 Li-SOCl2 battery pack is suitable for smart water meters, gas meters, AMR/AMI modules, industrial IoT sensors, wireless security devices, GPS tracking equipment, PLC memory backup, and outdoor telemetry terminals where long standby life and dependable low-current discharge are more important than rechargeable operation. The 3.6V platform, 20Ah capacity, 150mA maximum constant discharge current, 300mA pulse current, and -55~+85°C ambient temperature range make it a practical power source for devices installed in cabinets, meters, enclosures, and remote monitoring systems. VTCBATT can support application-specific customization including connector matching, wire length adjustment, terminal style, sleeve printing, label design, pack sampling, and production coordination for OEM device builders, brand owners, and factory-direct lithium battery wholesale programs.
















