3V CR 1/2AA Lithium Battery w. cord and connector (NCU)

Lithium Backup Battery for Siemens CNC, PLC and SINUMERIK NCU

This high-performance lithium manganese dioxide battery is designed as a direct OEM replacement for Siemens CNC and PLC controls where reliable backup power is essential for protecting machine data and ensuring operational reliability. The battery provides stable 3V output and a capacity of 950 mAh (2.85 Wh), ensuring long service life and dependable performance in demanding industrial environments.

The battery features a connector plug for quick and easy installation and has compact dimensions of Ø14.45 mm x 25.3 mm. It is widely used in Siemens SIMATIC S5-90U, S7-300 series, SIMOTION D series, SINUMERIK NCU controls and many CNC machines and industrial control systems.

This battery is a direct replacement for Siemens 6FC5247-0AA18-0AA0, 575332TA, 6FC5348-0AA01-0AA0 and 6FC5348-0AA02-0AA0 as well as DMG MORI 2254242. It also replaces Siemens battery part numbers 143467 and 146881 and is technically identical in function and performance.

The robust lithium manganese dioxide chemistry ensures very low self-discharge and up to 10 years of shelf life. With an operating temperature range from −60 °C to +85 °C, the battery is ideal for demanding industrial applications where reliable backup power is critical.