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CR920 3V 20mAh Lithium Manganese Dioxide Battery: Ultra-Compact Energy for Continuous Glucose Monitoring (CGM) Systems
Powering the Patient Lifecycle: Why Precision Electronics Demand Medical-Grade CR920 Cells
Wearable medical telematics, specifically Continuous Glucose Monitors (CGMs), have revolutionized diabetes management. These compact, skin-adhered devices must run 24/7, transmitting real-time interstitial fluid glucose data via Bluetooth® Low Energy (BLE) to a patient’s smartphone.
Because CGMs are ultra-lightweight and low-profile, their internal hardware requires a micro-power source that delivers absolute reliability. A single power failure means missing critical glycemic alerts.
Our Medical-Grade CR920 is built explicitly to anchor this lifeline. Packing a stable 20mAh into an ultra-miniature 9.5mm*2.0mm physical frame, this lithium manganese dioxide cell guarantees the flat discharge curve and unyielding pulse-current capacity required to keep patient data streaming uninterrupted.
Technical Specifications Matrix of CR920 3V 20mAh Lithium Manganese Dioxide Battery
| Parameter | Specification | Medical & B2B Procurement Relevance |
| Model | CR920 | Specialized micro-profile for ultra-lightwear patches |
| Chemical System | Lithium Manganese Dioxide (Li/MnO2) | Highly stable voltage output, zero heavy metals, 10-year shelf life |
| Nominal Voltage | 3.0V | High operational voltage stability for clean wireless RF transmission |
| Nominal Capacity | 20mAh | Optimized energy density for standard wearable diagnostic lifecycles |
| Operating Temperature | -20°C to 70°C | Flawlessly resists body heat variations and outdoor environments |
| Dimensions | 9.5mm (Diameter) × 2.0mm (Height) | Micro-calibrated casing engineered for space-restricted PCBs |
Full CR Series Lithium Manganese Dioxide Batteries
| 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 |
Strategic Value Pillars
1. Optimized for Periodic BLE Wireless Bursts
Continuous Glucose Monitors spend most of their lifecycles in ultra-low power sleep states, waking up every few minutes to execute a sensor reading and a high-current wireless data burst. Our CR920 is engineered with low internal resistance to absorb these recurring pulse loads seamlessly, eliminating internal voltage drop and premature device shutdowns.
2. Medical-Grade Environmental Resilience (-20°C to 70°C)
Wearable skin patches face tough real-world testing. From cold outdoor morning jogs to hot showers, the battery must maintain constant electrical output. The CR920 utilizes a bio-stable, low-volatility electrolyte compound that remains unhindered by body heat fluctuations or sudden atmospheric temperature shifts.
3. Fortified Anti-Leakage & Biocompatible Housing Security
Because this battery operates inside a wearable device in direct contact with human skin, structural safety is non-negotiable. The CR920 features an automated, ultra-precise hermetic crimp sealing process and an anti-oxidation safety casing, driving the risk of chemical leakage to an absolute near-zero benchmark.
Primary Medical & Electronic Applications
Frequently Asked Questions
Why is the CR920 coin cell chosen for Continuous Glucose Monitors (CGM)?
The CR920 is a highly specialized micro-power source measuring only 9.5mm*2.0mm. It provides the perfect balance of ultra-low weight, a stable 3V baseline, and a 20mAh reservoir—delivering the precise energy footprint required to power micro-sensors and localized BLE antennas without adding bulk to a patient’s wearable skin patch.
Can your medical-grade CR920 battery withstand high-current data transmissions?
Yes. Our CR920 is engineered with a high-purity lithium-manganese internal configuration that drops internal resistance. This allows the cell to deliver quick, high-frequency pulse loads needed for encrypted wireless data handshakes without suffering the severe voltage degradation typical of consumer-grade button cells.
Secure Your Wholesale Global Medical Supply Chain
We are an established Tier-1 manufacturer supplying reliable, high-density micro-power components globally. We provide bulk industrial tray layouts optimized for sterile automated cleanroom assembly lines, as well as customized retail configurations. Every batch is certified under UN38.3, MSDS, RoHS, and strict global transport compliance frameworks.
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