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The Seiko Instruments MS621T is a rechargeable lithium-ion battery with a voltage of 3 volts and a capacity of 5.5mAh. It is characterized by its small size, high energy density, and long cycle life, making it suitable for various compact devices and applications. Functions: The MS621T battery provides reliable power to battery-operated products, including small electronic devices, wearable technology, and IoT devices. It delivers a stable voltage output and can withstand a wide range of temperatures. Applications: The MS621T battery is commonly used in devices such as wristwatches, electronic toll tags, memory backup power supplies, and other compact electronic gadgets. Its compact size and reliable performance make it ideal for portable and space-constrained applications. Alternative Parts: Some alternative rechargeable batteries that can be considered as alternatives to the MS621T include the Renata 621, Maxell 621, and Panasonic ML621. These batteries offer similar voltage, capacity, and size specifications, and can be used as replacements in compatible devices. Embedded Modules: The MS621T can be integrated into specific electronic devices using custom-designed battery holders or soldering techniques. It is often embedded in PCBs or modules to provide a power source for various applications. Q&A: 1. Q: What are the typical dimensions of the Seiko Instruments MS621T battery? A: The MS621T battery has dimensions of 6.8mm in diameter and 2.1mm in height. 2. Q: Can the MS621T battery be used as a backup power supply for memory retention? A: Yes, the MS621T is commonly used for memory backup in devices such as digital cameras, clocks, and small electronic gadgets. 3. Q: What is the expected cycle life of the MS621T battery? A: The MS621T battery has a typical cycle life of 100-200 charge/discharge cycles, making it suitable for long-term use in various applications. 4. Q: Can the MS621T battery be recharged multiple times? A: Yes, the MS621T battery is rechargeable and can be recharged multiple times, providing extended usage in battery-operated devices. 5. Q: What are the temperature specifications for the MS621T battery? A: The MS621T battery can operate within a wide temperature range, typically from -20°C to 60°C, making it suitable for both indoor and outdoor applications.