CR927 3V 28mAh Lithium Manganese Dioxide LiMnO2 Coin Cell Battery
- Omnergy
- China
- 15 days
- 750 million per year
High-performance CR927 3V 28mAh Li-MnO2 micro coin cell. Engineered specifically for Continuous Glucose Monitors (CGMs), smart security sensors, and micro-IoT. Reliable from -20°C to 70°C. Factory-direct B2B supply.
CR927 3V 28mAh Lithium Manganese Dioxide LiMnO2 Coin Cell Battery
In the rapidly advancing world of minimally invasive medical wearables and covert security tech, hardware real estate is the ultimate luxury. The CR927 3V 28mAh Lithium Manganese Dioxide (Li-MnO2) Coin Cell Battery is the engineering answer to aggressive miniaturization.
Breaking the sub-10mm barrier with a precise footprint of Φ9.5 × 2.7mm, this ultra-compact power source doesn't compromise on endurance. It delivers a formidable 28mAh capacity and a stable 3.0V discharge curve, serving as the reliable micro-power heartbeat for devices where user comfort, discretion, and flawless data transmission are absolute requirements.
Technical Specifications of CR927 3V 28mAh Lithium Manganese Dioxide LiMnO2 Coin Cell
| Technical Parameter | Specification |
| Battery Model | CR927 |
| Chemical Composition | Lithium Manganese Dioxide (Li-MnO2) |
| Nominal Voltage | 3.0V |
| Nominal Capacity | 28mAh |
| Dimensions | Diameter: 9.5mm | Height: 2.7mm (Φ9.5 × 2.7mm) |
| Standard Weight | 0.6g |
| Operating Temperature | -20°C to +70°C |
| Self-Discharge Rate | <2% per year (at 20°C) |
Full CR Series Lithium Manganese Dioxide LiMnO2 Coin Cell Battery
| Model | Nominal Voltage (V) | Nominal Capacity (mAh) | Nominal Current (mA) | Maximum Continuous Current (mA) | Maximum Pluse Current (mA) | Max Dimension (mm) | Weight (g) |
| CR920 | 3 | 20 | 0.1 | 1 | 5 | Φ9.5X2.0 | 0.55 |
| CR927 | 3 | 28 | 0.1 | 1 | 5 | Φ9.5X2.7 | 0.6 |
| CR1025 | 3 | 30 | 0.1 | 2 | 5 | Φ10.0X2.5 | 0.7 |
| CR1216 | 3 | 25 | 0.1 | 2 | 5 | Φ12.5X1.6 | 0.7 |
| CR1220 | 3 | 38 | 0.1 | 2 | 5 | Φ12.5X2.0 | 0.8 |
| CR1225 | 3 | 50 | 0.1 | 2 | 5 | Φ12.5X2.5 | 0.9 |
| CR1616 | 3 | 50 | 0.1 | 3 | 8 | Φ16.0X16 | 1.2 |
| CR1620 | 3 | 70 | 0.1 | 3 | 8 | Φ16.0X2.0 | 1.3 |
| CR1632 | 3 | 120 | 0.2 | 3 | 8 | Φ16.0X3.2 | 2 |
| CR2016 | 3 | 80 | 0.1 | 5 | 15 | Φ20.0X1.6 | 2 |
| CR2025 | 3 | 150 | 0.2 | 5 | 15 | Φ20.0X2.5 | 2.6 |
| CR2032 | 3 | 220 | 0.2 | 5 | 15 | Φ20.0X3.2 | 3.2 |
| CR2050 | 3 | 330 | 0.4 | 5 | 15 | Φ20.0X5.0 | 4.7 |
| CR2320 | 3 | 130 | 0.2 | 6 | 20 | Φ23.0X2.0 | 3 |
| CR2325 | 3 | 190 | 0.2 | 6 | 20 | Φ23.0X2.5 | 3.3 |
| CR2330 | 3 | 260 | 0.2 | 6 | 20 | Φ23.0X3.0 | 4 |
| CR2335 | 3 | 300 | 0.2 | 6 | 20 | Φ23.0X3.5 | 4.3 |
| CR2354 | 3 | 560 | 0.4 | 6 | 25 | Φ23.0X5.4 | 6.9 |
| CR2430 | 3 | 270 | 0.2 | 7 | 25 | Φ24.5X3.0 | 4.5 |
| CR2450 | 3 | 600 | 0.4 | 7 | 25 | Φ24.5X5.0 | 6.8 |
| CR2477 | 3 | 1000 | 0.6 | 7 | 25 | Φ24.5X7.7 | 10.5 |
| CR3032 | 3 | 500 | 0.4 | 10 | 30 | Φ30.0X3.2 | 6.8 |
| CR3832 | 3 | 850 | 0.8 | 20 | 75 | Φ38.0X3.2 | 11 |
Engineering Edge: Why Design with the CR927?
1. Sub-10mm Micro-Footprint for Skin-Tight Wearables
Every fraction of a millimeter matters when designing devices that adhere to the human body. At just 9.5mm in diameter, the CR927 allows hardware engineers to shrink their PCB designs drastically, making medical wearables lighter, thinner, and less intrusive for the end patient.
2. High-Fidelity Pulse Discharge for RF/BLE
Modern continuous monitors and security sensors don't just record data; they transmit it wirelessly. The CR927 is formulated with a highly conductive organic electrolyte that maintains a flat voltage curve even during the sudden power spikes required by Bluetooth Low Energy (BLE) and Near Field Communication (NFC) data bursts.
3. Climate-Resilient Architecture (-20°C to 70°C)
From shipping logistics in freezing cargo holds to deployment in sweltering outdoor security installations, this cell is heavily fortified. Its chemistry resists crystallization in the cold and prevents volatile expansion in high heat, ensuring zero capacity loss due to thermal shock.
Strategic Application Landscapes
Advanced Medical Wearables (Focus on CGM)
The CR927 is a critical component in the revolution of proactive healthcare. It provides life-saving reliability for:
Continuous Glucose Monitors (CGMs): Powering the micro-sensors and wireless transmitters that provide diabetics with real-time, 24/7 blood sugar data.
Smart Health Patches: Tracking patient vitals, body temperature, and pediatric data with an unnoticeable physical footprint.
Micro-Hearing Aids & Digital Pill Dispensers: Providing essential background power for sensitive medical logic boards.
Covert Smart Security & Access Control
When security hardware needs to be invisible, the power source must be microscopic.
Micro Door & Window Contacts: Powering ultra-thin perimeter sensors that blend seamlessly into modern window frames.
Miniature Key Fobs & Biometric Tokens: Providing long-lasting RF transmission power for secure facility access.
Asset Tracking Micro-Beacons: Protecting high-value goods with discreet, embedded IoT trackers.
Next-Gen Consumer Electronics
Ultra-compact laser pointers and tactical flashlights.
Flashing LED promotional materials and smart toys.
Micro-RTC (Real-Time Clock) backup for specialized sub-compact hardware.
B2B Supply Chain & Manufacturing Excellence
Medical-Grade Safety & Compliance: We understand the stringent regulatory pathways of medical and security hardware. Our CR927 batteries are manufactured in ISO9001 and ISO14001 certified clean-room environments. Every batch is rigorously tested for zero-leakage and carries full CE, RoHS, REACH, and UN38.3 certifications to ensure your end-product passes global regulatory approvals.
Custom Micro-Welding (SMT/DIP): We offer precision spot-welding for custom pins, tabs, and wire leads, engineered to drop perfectly into your automated PCB assembly line.
Scalable OEM Capacity: From R&D prototyping batches to high-volume industrial tray shipments, we provide stable pricing and guaranteed lead times.
Frequently Asked Questions
Why is the CR927 battery ideal for Continuous Glucose Monitors (CGMs)?
CGM devices require a delicate balance: they must be small enough to be worn comfortably on the skin for weeks, yet powerful enough to transmit daily Bluetooth data to a smartphone. The CR927 perfectly hits this "Goldilocks zone." Its sub-10mm diameter allows for discreet device casing, while its 28mAh capacity ensures uninterrupted, stable voltage for continuous sensor readings and RF transmissions.
What is the difference between a CR927 and a CR920 battery?
Both batteries share the same micro-diameter of 9.5mm. However, the CR927 is 2.7mm thick, yielding a higher capacity of 28mAh. The CR920 is slightly thinner at 2.0mm but offers a lower capacity. For medical and security devices where maximizing operational lifespan is critical, the CR927 is the superior choice.
Is the CR927 safe for close-contact wearable applications?
Absolutely. Our CR927 cells are built with a robust, corrosion-resistant stainless-steel shell and a proprietary anti-leakage crimp seal. The stable Li-MnO2 chemistry produces no outgassing under standard operating conditions, making it entirely safe for integration into medical patches and skin-contact wearables.
Accelerate Your Hardware Miniaturization Today
Don't let bulky power sources compromise your next-generation medical or security device. Partner with a factory-direct leader in micro-battery manufacturing.
[Contact Our B2B Engineering Team for Technical Datasheets & Free Samples]
