Available. The Mitsubishi MR-J3BAT is a lithium battery designed for use in Mitsubishi Electric's MELSERVO-J3 series servo amplifiers, including models such as MR-J3-A, MR-J3-A4, MR-J3-B, MR-J3-B4, MR-J3-T, and MR-J3-T4. This battery ensures the retention of absolute position data, which is crucial for precise servo control. Key specifications include a nominal voltage of 3.6V, a capacity of 2000mAh, and a lithium alloy content of 0.7g. The battery has a continuous backup time of approximately 20,000 hours and a useful life of 7 years from the date of manufacture. Installation involves connecting the battery to the BAT terminal of the servo drive unit. For detailed installation instructions and safety information, refer to the Mitsubishi Electric manual.