This combined power solution integrates the ER18505H battery with the EPC1520 capacitor to provide both high capacity and high pulse current capabilities. The battery pack features a nominal voltage of 3.6V and a nominal capacity of 4000mAh, with a maximum continuous discharge current of 500mA and a maximum available pulse current of 2000mA.
The ER18505H+EPC1520 4000mAh lithium ion battery pack from SUNJ Battery is a high-performance power solution designed to meet the demanding requirements of various industrial and smart devices. The 3.6V lithium ion battery pack operates within a wide temperature range of -40℃ to +85℃, ensuring reliable performance in diverse environments. The compact design (max weight 45g) makes it suitable for a variety of applications, from smart meters to medical equipment.
◆ High Capacity and Pulse Current: Combines a 4000mAh lithium-ion battery with a high pulse current capacitor for reliable power delivery.
◆ Wide Temperature Range: Operates effectively between -40℃ and +85℃, ensuring stability in extreme conditions.
◆ Long Service Life: Designed for extended use, providing consistent performance over time.
◆ Compact Design: Lightweight and compact, making it suitable for space-constrained applications.
Applications: 4000mAh lithium ion battery pack can be used in various fields, mainly used in smart meters (water meters, electricity meters, gas meters), computer support power supplies, medical equipment, wireless communications, oil drilling, portable communications equipment, scientific research instruments, remote data acquisition systems, military applications and Other electric equipment.
Structure and Appearance
◆ Structure: Composed of ER18505H battery and EPC1520 capacitor in parallel.
◆ Appearance condition: Visually inspect the surface of the product without rust or leakage, and the mark is clear.
Basic Features
| Item | Subject | Features |
| Specification | ER18505H+EPC1520 | |
| Norminal voltage | 3.6V | |
| 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 SUNJ 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 EPC1520. The main performance of EPC1520 is as follows:Voltage range2.5~3.67VNorminal capacity140AsMax. Dimensionsφ15.1mm x h 21.0mmNorminal weightAbout 10gMax. continuous discharge current500mAMax. available pulse current2000mA | |
| 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 |
Technical requirement
| Item | Test items | Test Conditions | Performance test within one year of storage |
| Open circuit voltage | ≥3.64V | ≥3.64V | |
| room temperature(25±3℃) | 3.64~3.68V | ||
| Load voltage | room temperature(25±3℃), 8.2Ω | 3S≥3.15V | |
| Standard discharge | Standard discharge: 2mA/1.8kΩ, cut-off voltage 2.0V | ||
| room temperature(25±3℃) | ≥4000mAh/2000h | ||
| Regular discharge | Regular discharge: 50mA/62Ω, cut-off voltage 2.0V | ||
| room temperature(25±3℃) | ≥3000mAh/60h | ||
| Leak resistance | Under the above test | No electrolyte leakage | |
| Deformation | Under the above test | The battery size does not exceed the standard | |
Electrical Performance Graph
