DX18505 3.9V 4Ah Li-SOCl2 Battery for smart meters, military electronics, remote tracking devices
| Parameter | Specification |
|---|---|
| Model | DX18505 |
| Battery Type | Li-SOCl2 cylindrical battery (lithium thionyl chloride) |
| Rated Voltage | 3.9V |
| Nominal Capacity | 4Ah at 2mA, 25°C, discharge to 2V |
| Maximum Recommended Continuous Discharge Current | 100mA |
| Maximum Pulse Current | 200mA |
| Dimensions | Φ18.5mm max x 50.5mm max; positive cap height Φ6.3mm max |
| Weight | Approx. 32g |
| Operating Temperature Range | -60°C to +85°C |
| Recommended Storage | Highest 30°C |
Flexible order quantity to support prototype testing and mass production.
Batteries certified to UL,CE,UN38.3,MSDS,ROHS,IEC62133 and more global standards.
Customized size,current, case and working temperature.
7-10 days quick delivery.
DX18505 3.9V 4Ah Li-SOCl2 Battery for smart meters, military electronics, remote tracking devices
The DX18505 3.9V 4Ah Li-SOCl2 battery is a cylindrical long-life lithium thionyl chloride cell designed for low-current and standby power applications that need stable voltage, compact size and wide temperature capability. The datasheet lists a nominal capacity of 4Ah at 2mA and 25℃ to a 2V termination voltage, 3.9V rated voltage, 100mA maximum recommended continuous discharge current, 200mA maximum pulse current, approximately 32g weight, and a maximum size of Φ18.5mm x 50.5mm. Its stated features include low self-discharge below 1% per year at +25℃ storage, long shelf life, stainless steel casing and electrode cap, airtight metal outer cap with glass seal, non-flammable electrolyte, and operation from -60°C to +85°C. VTCBATT supports factory supply, OEM/ODM sample development, labeling, terminal or lead configuration consultation, wholesale sourcing and stable batch production for smart meters, military field electronics, remote monitoring equipment and battery distributors.
DX18505 3.9V 4Ah Battery Cell Dimensions and Terminal Structure
| Dimension Label | Description | Dimension |
|---|---|---|
| Cell diameter | Cylindrical body maximum diameter | Φ18.5mm max |
| Cell height | Overall height maximum | 50.5mm max |
| Positive cap | Top cap feature | Φ6.3mm max |
Low Self-Discharge Storage
For standby power systems, storage behavior is as important as rated capacity. The low self-discharge design under +25°C storage and long shelf life make the DX18505 suitable for equipment that may remain idle before deployment or operate intermittently in the field, including defense monitoring and emergency standby electronics.
Metal-Sealed Cylindrical Structure
The product features a stainless steel casing and electrode cap, plus an airtight metal outer cap with a glass seal. This structure supports dependable use in compact electronics that require a sealed cylindrical primary battery with low magnetic properties and a non-flammable electrolyte design.
Stable 3.9V Long-Life Power
The DX18505 Li-SOCl2 battery provides a 3.9V rated voltage and 4Ah nominal capacity for low-current devices that need long standby operation. Its low self-discharge rate, listed as less than 1% per year at +25°C storage, supports meter, alarm, military field electronics and monitoring equipment where service intervals matter.
Wide Temperature Operation
The DX18505 is specified for operation from -60°C to +85°C, supporting outdoor, industrial and military electronics exposed to demanding thermal conditions. This makes it a practical choice for remote meters, tactical tracking nodes and monitoring equipment where ambient temperature changes can affect voltage and capacity behavior.
Why Choose VTCBATT?
VTCBATT not only focuses on customized design and excellent service to meet the diverse demands of different customers, but also devotes itself to precise and standardized manufacturing in every process to ensure the highest-quality batteries. Meanwhile, VTCBATT will provide comprehensive support from pre-sales to after-sales, focusing on customers’ feedback to establish long-term and win-win cooperation. VTCBATT professional sales and technical engineer teams will be your best custom battery experts to assist with reliable and fast services at any time.
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 DX18505 3.9V 4Ah Li-SOCl2 Battery
The DX18505 3.9V 4Ah Li-SOCl2 battery is a cylindrical long-life lithium thionyl chloride cell designed for low-current and standby power applications that need stable voltage, compact size and wide temperature capability. The datasheet lists a nominal capacity of 4Ah at 2mA and 25°C to a 2V termination voltage, 3.9V rated voltage, 100mA maximum recommended continuous discharge current, 200mA maximum pulse current, approximately 32g weight, and a maximum size of Φ18.5mm x 50.5mm. Its stated features include low self-discharge below 1% per year at +25°C storage, long shelf life, stainless steel casing and electrode cap, airtight metal outer cap with glass seal, non-flammable electrolyte, and operation from -60°C to +85°C. VTCBATT supports factory supply, OEM/ODM sample development, labeling, terminal or lead configuration consultation, wholesale sourcing and stable batch production for smart meters, military field electronics, remote monitoring equipment and battery distributors.
DX18505 3.9V 4Ah Li-SOCl2 Cylindrical Battery
The DX18505 is a compact cylindrical lithium thionyl chloride battery designed for long-life, low-current electronics such as smart meters, military field instruments, alarm transmitters, tracking devices, memory backup circuits, automation modules and professional instruments. It combines 3.9V rated voltage, 4Ah nominal capacity and a wide operating temperature range in an 18.5mm diameter cell format.
Product Overview
The DX18505 is intended for equipment that values standby lifetime, stable voltage and reliable mechanical structure rather than high-drain output. Its performance profile is suitable for metering, monitoring, memory retention and remote electronics where battery replacement intervals and storage stability are key design considerations.
Core Electrical Parameters
| Parameter | Specification |
|---|---|
| Model | DX18505 |
| Battery Type | Li-SOCl2 cylindrical battery (lithium thionyl chloride) |
| Rated Voltage | 3.9V |
| Nominal Capacity | 4Ah at 2mA, 25°C, discharge to 2V |
| Maximum Recommended Continuous Discharge Current | 100mA |
| Maximum Pulse Current | 200mA |
| Dimensions | Φ18.5mm max x 50.5mm max; positive cap height Φ6.3mm max |
| Weight | Approx. 32g |
| Operating Temperature Range | -60°C to +85°C |
| Recommended Storage | Highest 30°C |
Pack Size and Structure
The DX18505 uses a cylindrical cell body with a maximum diameter of 18.5mm and maximum height of 50.5mm. The positive cap is listed with a maximum 6.3mm feature dimension. The structure features a stainless steel casing and electrode cap, airtight metal outer cap with a glass seal, low magnetic properties and non-flammable electrolyte.
| Dimension Label | Description | Dimension |
|---|---|---|
| Cell diameter | Cylindrical body maximum diameter | Φ18.5mm max |
| Cell height | Overall height maximum | 50.5mm max |
| Positive cap | Top cap feature | Φ6.3mm max |
Operating Temperature and Storage
The battery is specified for operation from -60°C to +85°C. Capacity and voltage may vary at temperatures above or below room temperature, so equipment designers should validate the actual load profile, pulse demand and cutoff voltage under the target operating environment. Recommended storage is listed with a highest temperature of 30°C.
Performance Curves
Typical performance curves show discharge behavior at +25°C, voltage behavior across temperature and capacity behavior across current. These visual references are useful for early device evaluation before sample testing under the final load profile.
Application Fit
Typical applications include smart instruments and meters, military field instruments, tactical monitoring nodes, defense standby electronics, wireless alarm systems, remote tracking and monitoring systems, memory backup power supplies, electronic toll collection equipment, automation electronics, professional electronics and real-time clock modules. The cell is best positioned for low-current and intermittent standby use, not high-drain power delivery.
OEM/ODM Supply Notes
VTCBATT can support equipment manufacturers, distributors, defense equipment suppliers and brand owners with sample development, terminal or lead configuration consultation, labeling, application-specific validation support, wholesale supply and batch production planning. Direct welding to the battery surface should be avoided; pre-fitted terminals or leads should be used when a custom wiring configuration is required.
