Li-SOCl2 Batteries Energy Type ER18505 with SPC1520 HPC1530 Capacitor

Customized Li-SOCl2 Batteries Energy Type ER18505 with SPC1520 Capacitor battery pack Gas Fire Ignition battery

  • Model NO.:ER18505+SPC1520
  • Voltage:3.6V
  • Capacity:4000mAh
  • Shape:Cylinder
  • Battery Size:φ20mm x h 72.0mm
  • Brand:SER or OEM
  • Working temperature:-55°~+85℃
  • Applications:Electronic meters (water, gas,heat), Medical Equipment, Alarms and security systems,military equipment,cash registers,etc

Li-SOCL2 Batteries  Catalogue(图1)

Li-SOCl2 Batteries Energy Type ER18505 with SPC1520 1530 Capacitor

Er18505,Er18505 HPC1520,Er18505 with HPC1520,Er18505 SPC1520,Er18505 with SPC1520,ER18505H Plus SPC1520,ER18505H Plus SPC1520 Capacitor

Battery Features:                                                                                                    





Norminal voltage


norminal capacity

4000mAh(2mA, 25±3℃, cut off at 2.0V)

Note: The capacity of the battery varies with the discharge current, ambient temperature and termination voltage.

Max. continuous discharge current

500mA (Can provide higher current, consult SER company for details)

Max. available pulse current

2000mA (It varies according to the pulse performance (frequency, duration), temperature, battery condition and the minimum voltage acceptable to the applied equipment)

Pulse current discharge is provided by SPC1520. The main performance of SPC1520 is as follows:

Voltage range


Norminal capacity


Max. Dimensions

φ15.1mm x h 21.0mm

Norminal weight

About 10g

Max. continuous discharge current


Max. available pulse current



Operating temperature

-40~+85℃(When the operating temperature is higher than normal temperature, it may result in a decrease in the capacity at the beginning of the pulse and a low voltage reading)

Standard weight

Max. 45g

ER18505 1520.jpg

LiSOCL2 Battery Advantages

1. Low self-discharge rate:

The core of this battery pack lies in its use of lithium-thionyl chloride (Li-SOCl2) chemistry. Li-SOCl2 batteries are known for their high specific energy, which translates into longer operating times for devices powered by them. This chemistry also exhibits a low self-discharge rate, ensuring that the battery retains its charge for extended periods, even when not in use. The Er18505 SPC1520 model, specifically, offers a compact size with a high capacity, making it suitable for use in space-constrained environments.

2. High discharge current, especialy for pulse discharge current:

The addition of the EPC1520 capacitor to this battery pack further enhances its performance. Capacitors are known for their ability to store and release energy quickly, providing a burst of power when needed. By combining the steady power supply of the Li-SOCl2 battery with the instantaneous power delivery of the capacitor, the battery pack is able to meet the demands of high-drain applications while maintaining stable performance.

3. Long storage life, No voltage delay and passivation.

One of the key advantages of the 3.6V Er18505 SPC1520 Primary Li-SOCl2 Battery ER18505H Plus EPC1520 Capacitor Battery Pack is its excellent shelf life. Li-SOCl2 batteries are renowned for their long-term stability, and this particular model is designed to retain its performance for years, even under extreme conditions. This makes it an ideal choice for applications that require reliable power sources that can be stored for long periods without significant degradation.

4. High energy density, high capacity.

Moreover, the battery pack's high energy density allows it to provide a significant amount of power in a relatively small package. This is crucial in applications where space is limited, such as in handheld devices, sensors, and remote monitoring systems. The compact size and lightweight nature of the battery pack also contribute to its ease of use and portability.

5. Safety. 

Safety is another crucial aspect of this battery pack. Li-SOCl2 batteries are known for their stability and low risk of leakage or explosion. The Er18505 SPC1520 model incorporates additional safety features to ensure reliable and safe operation. This includes the use of high-quality materials and rigorous manufacturing processes to minimize the risk of defects or failures.


The 3.6V Er18505 SPC1520 Primary Li-SOCl2 Battery ER18505H Plus SPC1520 Capacitor Battery Pack represents a significant milestone in battery technology. Its combination of high energy density, long shelf life, and excellent low-temperature performance, along with its safety features and environmental friendliness, makes it a standout choice for a wide range of applications. As the demand for reliable and efficient power sources continues to grow, the ER18505H Plus SPC1520 battery pack stands poised to meet these challenges and power the future of electronic devices and systems.

◊ Main Application:

1. Signal lights and the post indicator transferapplications.jpg

2. Intelligent instruments

3. Smoke detector

4. Security device

5. Portable devices

6. Lighting

7. Medical equipment

8. Wireless and other military equipment

9. Water, gas and electricity meters

10. Memory backup power sources

11. Archery tracer nock


              Company Advantage  

Li-SOCL2 Batteries  Catalogue(图6)

ER18505M Power type 3.6V A size Primary Lisocl2 Batteries Flat Top Lithium Thionyl Chloride battery(图2)
ER18505M Power type 3.6V A size Primary Lisocl2 Batteries Flat Top Lithium Thionyl Chloride battery(图3)

With three producing bases, sixteen 

advanced manufacturing lines, over 

1650 staff, we can produce 20000,00 

primary cells and 600,000 rechargeable 

battery packs per month.

Founded in 2004, Guangzhou Ser 

Battery Technology Co.,Ltd is CE. UL. 

SGS, IEC and ISO9001 certificated 

High-tech company.

Customers' interests always goes

first,SER has a professional sales

team, shipping team and after 

sales team to provide you with 

the best solutions and timely service.

ER18505M Power type 3.6V A size Primary Lisocl2 Batteries Flat Top Lithium Thionyl Chloride battery(图4)
ER18505M Power type 3.6V A size Primary Lisocl2 Batteries Flat Top Lithium Thionyl Chloride battery(图5)

ER18505M Power type 3.6V A size Primary Lisocl2 Batteries Flat Top Lithium Thionyl Chloride battery(图6)

Efficient and innovative R & D team 

helps the company lead in product 

design and superior performance

While keeping core competitivenes,

SER also takes into account relevant 

social, economic and environmental 

goals, and always maintains sustained 

profitability and development capabilities.

For many years, the professional
SER team has focused on the lithium
battery industry, and has taken every
product as a work of art with firmness,
steadiness and excellence.



Product Advantage

  1. Full range of battery categories

  17 years of development, SER have
  the ability to offer many product
  categories:Lisocl2 Battery, LiMNO2
  battery, LiPO battery and LiFePO4

  2. Safety

  The perfect protection IC has been used,
  undervoltage, short-circuit, overload,
  backflow,and we have carried out strict
  inspections and external tests, make sure
  no quality problems in the hands of

 3. Excellent and stable performance

  Strict control for cleanliness in dust-free
  workshop from IQC,IPQC to OQC, we
  control every step strictly CE, UL, SGS,
  FCC,ROHS and ISO9001: 2000 certified.

  4. OEM & ODM Ability

  Professional engineers have rich 
  experien ce in OEM& ODM. The
  independent labs have  many 
  sophisticated machines and design
  softwares always guarantee our OEM
  &ODM projects always keep in
  high level. 

  5. Technology

  Our dedicated and experienced engineers

  team always work together to our customers
  from their product design to battery solution
  and mass production,Reduce their time cost
  and communication cost.   

  6. Delievry

  Fast delivery with standard package,will
  bring you a professional experience with
  long-term cooperative freight company
  and stable routes.

You may also interested in other lithium batteries:

LiSOCL2 battery  LiMnO2 battery  Ultra thin battery  Lipo battery LiFePO4 batteries  Portable power station

Have not find a suitable battery for your prototype?

Li-SOCL2 Batteries  Catalogue(图4)

Let's talk about what SER experience can do for you!

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