ER18505 Fat A 3.6V Li-SOCl2 Battery
For AMI, Valve Control & Industrial Meters
Key Features
- Voltage & Capacity: 3.6V nominal, 4000mAh rated, 2.0V cut-off voltage — flat, stable discharge for long-life devices
- Physical Spec: Bobbin Fat A-size, 18.5mm × 50.5mm, approx. 27g — fits standard Fat A battery holders
- Shelf Life: Ultra-low self-discharge (<1%/year), up to 10+ years storage life at 20-25°C dry environment
- Safety & Cert: RoHS/CE/UL/UN38.3; stainless-steel case, leak-proof and corrosion-resistant
- Chemistry: Li-SOCl2 bobbin construction — high energy density (500-700Wh/kg), optimized for low-current long-life duty
Core Advantages
- Long-Lasting: Annual self-discharge <1% supports 10+ years maintenance-free device service
- Stable Performance: Flat 3.2-3.6V discharge curve across -55°C to +85°C operating range
- Eco-Safe: Mercury-free and cadmium-free primary lithium chemistry
- Wide Compatibility: Direct drop-in for standard Fat A battery compartments
- Cost-Effective: Fewer replacements lower total cost of ownership over device lifetime
Applications
- Metering & Utility: Smart water/gas/electricity meters, AMR/AMI systems
- IoT & Remote Sensing: Wireless sensors, data loggers, environmental monitors
- Industrial: Process instrumentation, SCADA, alarm & control systems
- Backup Power: Memory & RTC backup, emergency systems, portable instruments
The ER18505 (Fat A) is a 3.6V bobbin-type Li-SOCl2 primary battery rated 4000mAh. Delivering high capacity in a compact package, it is ideal for advanced metering, motorized valve control and industrial instrumentation where dependable long-life power is critical in harsh environments.
Specifications


Get in touch
Address
Xinwu Rd, New tech industrial zone, xinxiang city Henan province, 453000, China
Contacts
Sales +86 0373 99188888
office@newenergise.com
