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ML614R-TT31
ML614R-TT31 FDK
| Part Number | ML614R-TT31 |
|---|---|
| Manufacturer | FDK |
| Category | Batteries & Power Products > Rechargeable Batteries (Secondary) – Coin / Button Cell |
| Description | Rechargeable Lithium Manganese Dioxide Coin Cell with Tab Terminals, 3.0V Nominal Voltage, 2.5mAh Typical Capacity(Range:2.3~2.8mAh), 614 Package, Surface Mount / PCB TT31 Tab Configuration,Operating Temperature Range (-20°C to +60°C). |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The ML614R-TT31 is a reliable rechargeable lithium manganese dioxide coin cell from FDK. Equipped with factory pre-welded TT31 terminals for PCB mounting and soldering, this 3.0V secondary battery features stable discharge characteristics, overcharge resistance and ultra-low self-discharge. Designed for compact electronic equipment, it supplies seamless power backup for RTC circuits, SRAM data retention, microcontrollers and IoT modules.
Core Advantages
Stable 3.0V Operating Voltage
Supplies steady voltage to back up low-power MCU, SRAM and RTC chips without complex peripheral voltage circuits.
Ultra-compact 614 Form Factor
6.8mm × 1.4mm tiny size with TT31 welded terminals, suitable for automated PCB assembly and wave soldering.
Excellent Charge-Discharge Cycle Performance
Supports thousands of shallow charge cycles with strong overcharge tolerance for long-term maintenance-free operation.
Low Self-Discharge & High Stability
Low self-discharge rate and great anti-leakage performance, ensuring consistent performance for commercial and industrial devices.
Key Specifications
| Brand | FDK |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Mercury-Free |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | Coin Cell 614 (6.8mm Diameter × 1.4mm Height) |
| Mounting Type | PCB Mount / Solder Tab Terminals (TT31 Tab Configuration) |
| Surface Marking / Silkscreen | FDK ML614R Marking |
| Battery Chemistry | Rechargeable Lithium Manganese Dioxide |
| Nominal Voltage | 3.0V |
| Nominal Capacity | 2.5mAh (Typical Range: 2.3~2.8mAh) |
| Discharge Cut-off Voltage | 2.0V |
| Standard Charge Voltage | 2.8V to 3.2V (Recommended 3.1V ± 0.15V) |
| Standard Trickle Charge Current | 15 μA (0.015 mA) |
| Maximum Discharge Current | 0.3mA |
| Cycle Life | Approx. 3000 cycles (5% Shallow Discharge); 300 cycles (20% Deep Discharge) |
| Operating Temperature Range | -20°C to +60°C |
| Weight | Approx. 0.16g |
| Packaging Format | Tape & Reel / Tray / Bulk |
Precautions
- Strict Charging Voltage Control: Charge within 2.8V ~ 3.2V. Voltage exceeding 3.3V will lead to electrolyte deterioration, capacity attenuation or battery swelling.
- Proper Soldering Operation: Only solder via factory TT31 tab terminals. Do not directly heat the battery shell with a soldering iron.
- Avoid Reverse Charging: Maintain correct circuit polarity during assembly. Reverse current may damage the battery and peripheral components.
- Prevent Severe Short Circuit: Short-circuit between positive and negative terminals causes instantaneous heavy current, overheating and battery failure risks.
- Safe Handling & Temperature Restriction: Do not incinerate, disassemble or crush the cell. Operating temperature cannot exceed +60°C. Follow local regulations for lithium battery recycling and disposal.
Typical Applications
- RTC (Real-Time Clock) power backup for smart wearables, tablets and portable devices
- SRAM & non-volatile memory data retention for industrial controllers and POS terminals
- Backup power for smart meters, security alarm equipment and IoT sensor nodes
- Digital cameras, portable medical monitors and handheld consumer electronics
- Indoor portable electronic equipment. Not suitable for high-temperature automotive scenarios
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS, YFH Standard |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, bulk pricing and custom versions with solder tabs, pins and wire assemblies, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is the FDK ML614R-TT31 rechargeable or primary non-rechargeable battery?
A1: ML614R-TT31 is a secondary rechargeable lithium manganese dioxide battery, suitable for continuous trickle charging and thousands of micro-cycles in RTC backup circuits.
Q2: What does the “TT31” suffix stand for in ML614R-TT31?
A2: TT31 refers to the factory pre-welded tab configuration, including pin shape, spacing and bending design, optimized for SMT PCB soldering.
Q3: How to design the charging circuit for ML614R-TT31?
A3: Constant voltage charging circuit with current-limiting resistor and blocking diode is recommended. The charging voltage should be stabilized at 3.1V (±0.15V).
Q4: Can I order ML614R cells with customized terminals or different pin layouts?
A4: Yes. Besides TT31 version, we can supply FDK ML614R with various standard or custom terminals to match your PCB design requirements.
Q5: Can ML614R-TT31 replace disposable CR614 coin cell directly?
A5: Not directly plug-and-play. CR614 is non-rechargeable primary battery; ML614R requires dedicated charging circuit. Hardware modification is necessary for replacement.
Q6: Why does the nominal capacity show a range of 2.3mAh ~ 2.8mAh?
A6: The typical rated capacity is 2.5mAh. Capacity deviation between 2.3mAh~2.8mAh is normal under different discharge test conditions from different suppliers.
Q7: What is the recommended storage environment for ML614R-TT31?
A7: Store in dry environment at 10℃ ~ 30℃, avoid high temperature, humidity and direct sunlight. Long-term storage shall not exceed +40℃.
Q8: Are there compatible alternative models for ML614R-TT31?
A8: There are domestic alternative rechargeable 614-size lithium manganese batteries. Contact us to confirm dimension, voltage and terminal compatibility before substitution.
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