ER18505H + EPC1520 3.6V 4Ah Hybrid Pulse Battery Pack
ER18505H + EPC1520 3.6V 4Ah Li-SOCl₂ Hybrid Pulse Battery Pack for Smart Metering, LoRaWAN Sensors and Industrial IoT Devices.
ER18505H + EPC1520 3.6V 4Ah Li-SOCl₂ Hybrid Pulse Battery Pack for Smart Metering, LoRaWAN Sensors and Industrial IoT Devices.
Technical Specifications
The values below describe the finished ER18505H and EPC1520 assembly. Final harness and mechanical details can be adapted to the target device.
Pulse-current note: 2000mA is the maximum available pulse-current rating, not a continuous-current rating. Actual pulse performance depends on pulse duration, pulse interval, operating temperature, battery condition, total circuit resistance and the equipment's minimum operating voltage. Application-level verification is required.
Two Assembly Layouts
Both versions use the same ER18505H cell and EPC1520 pulse capacitor. Only the EPC position and related mechanical details differ.
| Comparison Item | End-Mounted EPC | Side-Mounted EPC |
| EPC position | Above the cell's positive end | Beside the cell, level with the positive end |
| Reference size | Approximately Ø20.0 × 72.5mm | Maximum 53 × 33 × 19mm |
| Standard lead | 50mm, 26AWG, 5264-2P | 100mm, 24AWG, PH-2P |
Connector type, terminal, polarity, wire gauge and lead length can be customized. Confirm the available installation space before finalizing the pack layout.
Target Applications
The most relevant equipment fields are listed first. Model names are included to help users searching by device type or equipment reference.
1 · Smart Metering and AMR/AMI
Smart water, gas, electricity and heat meters; ultrasonic flow meters; remote meter readers; wireless transmitters; utility valve-control modules.
Equipment examples: Taosonic T3-1-2 / T3-1-2-K; NextCentury RR301 / RR301-TR
2 · LoRaWAN and Industrial IoT
Wireless sensor nodes; data loggers; building automation sensors; agricultural and environmental monitoring equipment.
Equipment example: Dragino LSN50 / LSN50-V2
3 · Remote Monitoring and Data Acquisition
Pressure, flow, tank-level and condition sensors; outdoor telemetry terminals; irrigation monitoring equipment.
Fit requirement: Engineering review for the actual electrical and mechanical profile
4 · Asset Tracking and Wireless Telemetry
Asset, equipment, container and cargo trackers; GPS or cellular telemetry terminals.
Fit requirement: Pulse-profile and installation-space verification
5 · Remote Control and Alarm Transmission
Remote valve controllers; fault-reporting terminals; wireless alarm transmitters; low-duty-cycle actuator modules.
Fit requirement: Application testing under the intended operating conditions
Compatibility notice: The equipment models above are application examples only and do not indicate automatic drop-in compatibility. Verify voltage, pulse-current profile, connector, polarity, dimensions, temperature range and service-life requirements before use.
SUNJ is independent of the third-party brands referenced above. All third-party trademarks and model names are used solely for product identification and application reference.
Custom Battery Pack and Engineering Review
SUNJ can adapt the assembly layout, connector, terminal, polarity, wire gauge, lead length, insulation, labels and related pack details to the target device.
✓ End-mounted or side-mounted EPC
✓ Connector, terminal and polarity
✓ Wire gauge and lead length
✓ Custom label and part number
Send the device model, standby current, pulse current and duration, pulse interval, temperature range, connector details and available installation space.
Frequently Asked Questions
No. The ER18505H is a primary, non-rechargeable Li-SOCl₂ cell. The EPC1520 supports pulse loads but does not make the pack rechargeable.
No. The 2A value is the maximum pulse-current capability, not a continuous-current rating. Application-level verification is required.
No. The model examples indicate relevant application categories. Electrical, mechanical and environmental requirements must be verified before use.
Yes. The EPC position, connector, polarity, wire gauge, lead length, insulation and label can be customized subject to engineering review.
