The ER18505 Li-SOCl₂ battery is intended for long-life equipment whose power requirement sits above the typical low-drain profile of smaller ER cells.
With 4000 mAh nominal capacity and a maximum continuous current of 130 mA, this model provides additional electrical headroom for devices that perform regular sensing, processing, logging, or communication throughout deployment. Its larger 18.7 mm diameter also allows more stored energy within a cylindrical format that remains suitable for compact industrial equipment.
Designed for Higher Ongoing Power Demand
Many long-life battery applications are not continuously dormant.
Connected meters, remote controllers, monitoring terminals, and telemetry devices may operate internal electronics for meaningful periods between transmission events. In these cases, the average current demand can become just as important as occasional pulses.
ER18505 supports a maximum continuous current of 130 mA, making it a useful option where the device requires a stronger sustained output than smaller Li-SOCl₂ cells can comfortably provide.
4.0 Ah Energy Reserve for Extended Deployment
The 4000 mAh nominal capacity gives ER18505 a larger energy budget for equipment expected to remain in service for long intervals.
This additional capacity can be valuable when a device:
- samples sensors frequently
- stores or processes data locally
- maintains active monitoring circuits
- communicates on a regular schedule
- operates in locations where maintenance visits are expensive
The result is a cell format suited to applications where both operating duration and electrical load must be considered together.
Typical Applications
Smart Metering & Utility Equipment
Suitable for communication-enabled water, gas, heat, and industrial meters with higher energy budgets or more frequent measurement and transmission cycles.
Industrial Telemetry
Applicable to remote telemetry units, wireless data acquisition equipment, monitoring terminals, and distributed industrial sensing systems.
Infrastructure Monitoring
Can support pipeline monitoring, utility infrastructure sensors, environmental nodes, and other field-installed devices expected to operate unattended for extended periods.
Asset & Equipment Tracking
A practical option for tracking systems that combine location data, sensing, onboard processing, and recurring wireless communication.
Remote Monitoring Systems
Suitable for industrial and environmental monitoring devices where the electronics remain active more frequently than in ultra-low-duty-cycle applications.
Marine & Outdoor Instrumentation
Can be considered for selected marine sensors, remote outdoor instruments, and monitoring electronics exposed to wide temperature variations and difficult maintenance conditions.
Pulse Performance for Intermittent Functions
ER18505 provides a maximum pulse current of 180 mA, supporting intermittent functions such as sensor activation, data acquisition, wireless transmission, and control circuitry within the battery’s specified limits.
For NB-IoT, cellular, GPS, or other communication modules with substantially higher peak-current requirements, the complete pulse profile should still be evaluated. A battery capacitor or another pulse-support solution may be required where the radio load exceeds the standalone cell capability.