ER17505M Lithium Rechargeable Battery with Wire Leads 3.6V
The ER17505M is an A-size spiral Li-SOCl₂ primary battery providing a nominal 3.6V and about 2800 mAh capacity. It delivers high and stable voltage, exceptional energy density (up to 590 Wh/kg) and long shelf life (≤1% capacity loss per year at +25°C), making it ideal for low-to-moderate continuous draw and long-life standby applications.
Features
- Chemistry: lithium thionyl chloride (Li-SOCl₂), nominal 3.6 V.
- Nominal capacity: ≈ 2800 mAh.
- Very low self-discharge — long shelf life (<1%/yr at +25°C).
- Wide operating temperature: −55°C to +85°C.
- High energy density (~590 Wh/kg) and stable voltage under a variety of loads.
- Termination: wire leads.
Specifications
| Attribute | Value |
|---|---|
| Part number | ER17505M |
| Chemistry | Lithium — thionyl chloride (Li-SOCl₂). |
| Nominal voltage | 3.6 V |
| Open-circuit voltage (25°C) | ≥ 3.65 V. |
| Nominal capacity | ≈ 2800 mAh (test: +25°C, 2.0 mA to 2.0 V). |
| Typical weight | 25.0 g. |
| Dimensions | Ø 17.0 ± 0.2 mm × 49.1 ± 0.5 mm. |
| Operating temp | −55°C to +85°C. |
| Storage (recommended) | ≤ 30°C, ≤ 75% RH. |
| Energy density | up to 590 Wh/kg. |
Applications
- Smart metering
- Security / alarm systems and sensors.
- IoT / RFID nodes, wireless transmitters, remote sensors.
- Smart home devices and other long-life low-power electronics.




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