The Maxell ER17/33 is a primary (non‑rechargeable) cylindrical lithium battery designed for long‑term, low‑drain applications where reliability and stability are critical. With its compact 2/3A size, high energy density, and extremely low self‑discharge rate, it’s a popular choice for PLC memory backup, CNC machines, robotics, security systems, and utility meters. It maintains a stable voltage output over most of its service life and performs well even in extreme temperatures.
Categories:
Coin and Button Cell| Parameter | Details |
|---|---|
| Model | Maxell ER17/33 |
| Chemistry | Lithium Thionyl Chloride (Li‑SOCl₂) |
| Nominal Voltage | 3.6 V |
| Capacity | 1600 mAh (1.6 Ah) |
| Size / Form Factor | 2/3A cylindrical |
| Dimensions | ~17 mm (diameter) × 33 mm (height) |
| Weight | ~18 g |
| Operating Temp. | −55 °C to +85 °C |
| Shelf Life | Up to 10 years (self‑discharge ≈1%/year) |
| Continuous Standard Load | ~2.5 mA |
| Connector Options | Bare leads, solder tabs, or plug (varies by version) |
| Applications | PLCs, CNC systems, industrial automation, metering devices, memory backup |
| Country of Origin | Japan |
💡 Note: This cell is not rechargeable — attempting to charge it can cause leakage or rupture. It’s engineered for maintenance‑free, long‑term operation in critical systems.
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