Seiko MS621FE-FL11E 3v, 5.5mah rechargeable coin cell
Seiko Instruments MS621FE-FL11E 3V Rechargeable Manganese Silicon Lithium Battery – 5.5mAh
The Seiko Instruments MS621FE-FL11E is a high-precision, ultra-compact 3V rechargeable manganese silicon lithium battery designed for applications that demand long cycle life, exceptional stability, and reliable miniature power. Engineered with a silicon oxide anode and a lithium manganese composite oxide cathode, this compact cell delivers dependable performance in space-constrained electronic designs.
Technical Specifications
Key Benefits
- Rechargeable Design: Built for repeated charge and discharge cycles in long-life electronic applications.
- Ultra-Compact Size: Miniature footprint makes it ideal for tight PCB layouts and compact device designs.
- Stable 3V Output: Delivers reliable voltage for precision electronic circuits and backup functions.
- Low-Profile Construction: Slim 2.1mm height supports space-sensitive assemblies.
- PCB Pin Terminals: Convenient pin configuration allows secure board-level integration.
- Engineered for Reliability: Designed for dependable long-term performance in both consumer and industrial electronics.
- Excellent Durability: Advanced cell chemistry supports stable operation and long service life.
Applications
Ideal for designers and engineers requiring a miniature rechargeable cell with dependable output and board-mount convenience.
Design Highlights
Performance Summary
- Nominal Voltage: 3V
- Capacity: 5.5mAh
- Internal Impedance: 80Ω
Please confirm battery dimensions, terminal configuration, and charging circuit compatibility before ordering.
Typical Uses
- Memory retention and backup circuits
- Miniature portable electronics
- Embedded PCB-based power designs
- Low-power industrial modules
- Compact consumer electronic assemblies
- Space-limited rechargeable battery applications
Why Choose the MS621FE-FL11E?
- Miniature Form Factor: Designed for very compact electronic devices.
- Reliable Rechargeability: Suitable for repeated cycle use where disposable cells are not ideal.
- Efficient PCB Integration: PCB pin terminals simplify installation into circuit assemblies.
- Wide Operating Range: Performs from –20°C to +60°C.
- Lightweight Construction: Just 0.23g for minimal added mass in portable equipment.
- Trusted Seiko Quality: Built for precision and long-term consistency.
Important Notice
This is a 3V rechargeable manganese silicon lithium battery. Always verify dimensions, terminal layout, and charging compatibility with your device or PCB design before installation. Using an incompatible battery may result in improper operation or damage to the equipment.
Compact Rechargeable Power You Can Trust
Choose the Seiko Instruments MS621FE-FL11E for a dependable miniature rechargeable power solution offering stable performance, compact dimensions, and efficient PCB integration for advanced electronic designs.
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🔋 What’s mAh All About?
🔋 What’s mAh All About?
mAh stands for milliamp hours—basically, how much "fuel" your battery can hold. A higher or lower mAh than your original battery? No worries! 🙌 It won’t affect charging or operation—just means your device might run a bit longer or shorter between charges. Still 100% compatible. Still 100% awesome. 💪✨
Before ordering please read
Before ordering please read
Ensure the original battery model number is mentioned in our product description and verify that your device model number is also listed in the description.
How to Look after your new lithium battery!!
How to Look after your new lithium battery!!
See how to look after your battery if its lithium Lithium Care
Delivery and Shipping
Delivery and Shipping
See our shipping policy and details at this link Shipping Details
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Technical Specifications
| Battery Details | |
|---|---|
| Category | Rechargeable Coin Cell Battery |
| Battery Type | Manganese Silicon Lithium (Rechargeable) |
| Voltage | 3V |
| Capacity | 5.5mAh |
| Chemistry | Silicon Oxide Anode / Lithium Manganese Composite Cathode |
| Terminals | PCB Pin Terminals |
| Internal Impedance | 80Ω |
| Standard Charge / Discharge Current | 0.015mA |
| Operating Temperature | –20°C to +60°C |
| Diameter | 6.8mm |
| Height | 2.1mm |
| Weight | 0.23g |
| Typical Applications | |
| Applications | Power management modules, memory backup circuits, portable devices, and industrial embedded systems |
| Brand | Seiko Instruments |
Battery Reference & Compatibility
Payment & Security
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