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ML2032
ML2032 Maxell Rechargeable Coin Cell Battery
| Part Number | ML2032 |
|---|---|
| Manufacturer | Maxell |
| Category | Batteries & Power Products > Rechargeable Batteries (Secondary Cells) – Coin / Button Cell |
| Description | Rechargeable Manganese Lithium Coin Cell Battery, 3.0V Nominal Voltage, 65mAh Capacity, 2032 Coin Cell Package, Wide Operating Temperature Range (-20°C to +60°C). |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The ML2032 is a rechargeable manganese lithium coin cell manufactured by Maxell. Designed for long-term power backup and memory retention, this 3.0V secondary battery delivers excellent cycle life, high energy density and low self-discharge, maintaining stable capacity under float charging. Standard 2032 form factor (20.0 mm Diameter × 3.2 mm Height) and -20°C ~ +60°C operating range make it ideal for RTC, CMOS memory backup, smart meters, automotive keyless systems and IoT devices.
Core Advantages
Long Recharge Cycle Life
Supports hundreds of charge-discharge cycles and stable trickle charging without performance degradation.
Stable 3.0V Output
Smooth flat discharge curve matches standard IC voltage, simplifying embedded power circuit design.
Ultra-Low Self-Discharge
Adopts Maxell exclusive sealing technology to minimize self-discharge for long-term standby backup.
Wide Temperature Adaptability
Consistent electrical performance from -20°C to +60°C, suitable for industrial, automotive and outdoor equipment.
Key Specifications
| Brand | Maxell |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Mercury-Free |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | Coin Cell 2032 (20.0 mm Diameter × 3.2 mm Height) |
| Mounting Type | Coin Cell Holder / PCB Tab Pin Solder Mount |
| Surface Marking / Silkscreen | Maxell ML2032 / 3V |
| Battery Chemistry | Rechargeable Manganese Lithium (Li-MnO₂) |
| Nominal Voltage | 3.0 V |
| Charging Voltage | 3.1 V to 3.3 V (Standard 3.25 V) |
| Nominal Capacity | 65 mAh |
| Cut-off Discharge Voltage | 2.0 V |
| Internal Resistance | 20 ~ 50 Ω |
| Max Discharge Current | Continuous ≤4mA, Pulse up to 8mA |
| Cycle Life | 500 ~ 1000 cycles (Depends on discharge depth and current) |
| Standard Continuous Current | 0.2 mA |
| Operating Temperature Range | -20°C to +60°C |
| Weight | Approx. 3.0 ~ 3.2 g |
| Packaging Format | Tray / Blister Pack / Bulk |
Precautions
- ML2032 is a rechargeable lithium manganese battery, requiring a dedicated 3.1V~3.3V constant voltage charging circuit. Never charge directly with a 5V power supply or ordinary CR2032 chargers, which may cause swelling or damage.
- Do not short-circuit, disassemble, squeeze, or expose the battery to high temperatures or open flames to avoid safety risks.
- It can physically replace CR2032, but only functions properly with a low-current floating charging circuit. The service life will be greatly shortened without a suitable charging circuit.
- Do not mix new and old batteries, or use rechargeable ML series batteries together with disposable lithium coin cells in the same device.
- Store unused batteries in a cool and dry environment, avoid prolonged exposure to humid or high-temperature conditions.
- Stop using immediately if the battery bulges, leaks or generates abnormal heat.
Typical Applications
- Real-Time Clock (RTC) and SRAM memory backup in desktop computers, laptops, and servers
- Industrial automation controllers, PLCs, smart energy meters, and telemetry devices
- Automotive keyless entry remotes, tire pressure monitoring systems (TPMS), and dashcams
- Medical monitoring devices, portable diagnostic tools, and digital calipers
- Smart home IoT sensors, security alarm systems, and wireless beacon tags
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: What is the main difference between CR2032 and ML2032 battery?
A: CR2032 is disposable primary lithium battery; ML2032 is rechargeable manganese lithium secondary battery. Same package size, but ML2032 supports cyclic charging while its nominal capacity is lower.
Q2: Can ML2032 directly substitute CR2032?
A: Physically interchangeable. Long-term replacement only works if the circuit supports low-current floating charging. Without charging circuit, ML2032 cannot be recharged once drained.
Q3: What is the proper charging voltage for Maxell ML2032?
A: Recommended charging voltage: 3.25V ±0.15V (3.1V~3.3V). Charging above 3.5V will shorten lifespan or damage the cell.
Q4: Does Maxell supply ML2032 with solder tabs?
A: Yes. Besides standard bare cells, ML2032 can be supplied with factory-welded horizontal or vertical PCB mounting tabs.
Q5: Can ordinary CR2032 chargers be used to charge ML2032?
A: Absolutely not. ML2032 requires stable 3.1V~3.3V constant voltage. Common 5V coin cell chargers will cause swelling, leakage and safety hazards.
Q6: What is the typical cycle life of ML2032?
A: It can achieve 500~1000 charge-discharge cycles, depending on discharge depth and operating current.
Q7: What is the maximum discharge current of ML2032?
A: Continuous discharge current ≤4mA; pulse discharge current can reach up to 8mA. Avoid long-time heavy current output.
Q8: What safety precautions should be followed when using ML2032?
A: Do not short-circuit, disassemble, squeeze or expose the battery to open flame and high temperature. Stop usage immediately if bulging or liquid leakage occurs. Do not mix rechargeable and disposable batteries in one device.
Q9: What application scenarios are suitable for ML2032?
A: Ideal for motherboard CMOS backup power, automotive key, industrial meter power supply, low-power remote controls and other equipment needing repeated cycle standby power.
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