CR2025 Coin 3V Limn02 Disposable Battery
Summary of Lithium Battery CR2025 3V
The CR2025 is a 3V primary lithium coin cell based on lithium manganese dioxide (LiMnO₂) chemistry. It is widely used in compact electronic devices that require stable voltage, long shelf life, and reliable pulse discharge performance. This cell is mercury-free, environmentally compliant, and engineered for safety and consistency rather than rechargeability. With a gravimetric energy density reaching 204 Wh/kg, CR2025 balances thin form factor with dependable electrical behavior under intermittent loads.
CR2025 Key Fob Battery Parameters
- Model: Lithium Coin Cell
- Chemistry: Lithium Manganese Dioxide (Li/MnO2)
- Voltage: 3V
- Diameter: 20mm
- Height: 2.5mm
- Typical Capacity: 170mAh
- Energy: 0.51Wh
- Energy Density: 204Wh/kg
- Standard Discharge Current: 0.2mA
- Max Discharge Current: 1mA
- Weight: 2.5g
- Operating Temperature: -20°C to +60°C (-4°F to +140°F)
- Self-Discharge Rate: <1% / year
- Shelf Life: >10 years
- Rechargeable: Non Rechargeable
Key Features – 3V Coin Battery CR2025
📈 High Energy Density (Up to 204 Wh/kg)
Achieved through optimized electrode loading and thin stainless-steel casing, suitable for long-term, low-to-medium drain applications.
🔁 Stable Discharge Behavior
Predictable voltage output until near end-of-life, reduces false low-battery signals in precision electronics
🚀 Pulse Discharge Performance
Excellent Pulse Capability, designed to handle short current spikes common in wireless transmission, button actuation, and RTC wake-up events. This performance comes from low internal resistance design, not from increasing lithium thickness, which helps maintain safety margins.
🛡️ Safety & Explosion Resistance
🧯 Integrated Safety Architecture
Stainless steel casing with controlled venting structure
Internal pressure management under abnormal conditions
🔥 Thermal & Mechanical Stability
No free oxygen release during normal operation
Stable cathode material compared to silver oxide alternatives
These features significantly reduce the risk of leakage, rupture, or explosion when used within specification.
🌱 Mercury-Free & Environmental Compliance
Complies with EU RoHS and global environmental regulations, no heavy metal contamination risk during disposal. This is not a marketing feature but a baseline requirement for modern LiMnO₂ primary cells supplied into regulated markets.
🧩 Typical Applications
🧠 Low-Power Electronics
RTC backup circuits
CMOS memory retention
🚗 Automotive & Industrial
Key fobs
TPMS modules
🏥 Medical & Consumer Devices
Glucose meters
Digital thermometers
Remote controls
⚠️ Commonly Overlooked Points & Misconceptions
❌ “CR2025 and CR2032 are interchangeable”
They share voltage and diameter but not thickness or capacity. Using a thicker cell may damage contacts or enclosures.
❌ “Higher energy density means higher continuous current”
Energy density reflects stored energy, not discharge rate. CR2025 is optimized for pulse loads, not sustained high drain.
❌ “All coin cells age the same”
Shelf life depends on electrolyte purity, sealing quality, and storage temperature, not just chemistry.
❌ “Primary lithium cells are unsafe by default”
When manufactured correctly, LiMnO₂ coin cells are among the most stable primary lithium systems available.
❓Frequently Asked Questions (FAQ)
Q1: What is difference between CR2025 and CR2032?
A: The main difference between CR2025 and CR2032 is thickness and capacity: CR2025 is 2.5 mm thick with lower capacity, while CR2032 is 3.2 mm thick and stores more energy. Both provide 3 V, but they are not always interchangeable due to mechanical fit and runtime differences.
Q2: What happens if you use a CR2025 instead of CR2032?
A: Using a CR2025 instead of a CR2032 may result in shorter runtime because the CR2025 has lower capacity. In some devices, the thinner CR2025 may also cause poor contact or intermittent power due to mechanical mismatch.
Q3: Which way does a CR2025 battery go in?
Q4: How long will a CR2025 battery last?
Q5: Where to buy CR2025 battery?
A: Cestpower is the manufacturer of CR2025 button battery, welcome to can contact us for business.
📞 Call to Action
🔧Need engineering confirmation or bulk supply evaluation?
If you are sourcing CR2025 cells for a regulated product or long-term program, contact our technical team to review application load profile, storage conditions, and compliance requirements before final selection.
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