Key Highlights
- CR2032 LiMnO2 battery is engineered to handle 15–30mA high-pulse currents required for Remote Keyless Entry (RKE).
- Using LiMnO2 chemistry, this CR battery can operate over a broad temperature range, from -20°C to +60°C
- The battery has an ultra-low self-discharge rate (<1% per year), ensuring a 5+ year storage life.
- Proprietary dual-crimp sealing technology prevents electrolyte leakage, protecting expensive vehicle fobs.
- The PKCell CR2032 battery is compliant with UN38.3, CE, and RoHS, and offers seamless international logistics.
Battery Requirements for the Application
High Pulse Discharge Capability: The primary function of a Remote Keyless Entry (RKE) system is to transmit RF signals. When a button is pressed, the CR2032 button cell battery must deliver a sudden “burst” of current (typically between 15mA and 30mA). Low-quality cells often suffer from excessive internal resistance, causing a sharp voltage drop that leads to signal failure or reduced remote range.
Sustained Voltage Stability: A professional-grade CR2032 lithium 3V coin battery must maintain a flat discharge curve. Even when the battery capacity reaches its final 30% stage, it must provide a stable enough voltage to prevent the “Key Not Detected” errors that frustrate end-users.
Enhanced Temperature Resilience: Car keys are frequently exposed to extreme temperatures. The CR2032 lithium button cell must utilize specialized electrolyte formulations to prevent chemical sluggishness in the cold and thermal degradation in the heat.
Strict Physical Tolerances & Vibrational Integrity: Batteries adhere to a rigorous 20mm x 3.2mm dimensional tolerance. This ensures a snug fit within the fob’s housing, preventing “micro-disconnections” caused by road vibrations or accidental drops.
Superior Leakage Resistance: The battery’s sealing integrity is paramount. Utilizing a high-quality stainless steel shell and advanced sealing gaskets ensures that the CR2032 lithium coin battery will not leak and corrode the sensitive PCB (Printed Circuit Board) of the key fob.
Data Table: PKCELL CR2032 Technical Specifications
| Battery | CR2032 |
| Chemistry | LiMnO2 |
| Voltage | 3V |
| Capacity | 210mAh |
| Operating Temperature | -20~60 °C |
| Self-Discharge Rate | <1% |
| dimension | 20.0mm×3.2mm |
| weight | 3.0g |
| Shelf Life | >5 years |
Key Pain Points We Solve
- Short Range & Signal Failure: Cheap CR2032 coin cell batteries often fail in cold weather. PKCELL uses a high-purity Li-MnO2 chemistry that maintains a high voltage plateau even in freezing conditions.
- Corrosion & Leakage: A leaking battery can destroy a $500 key fob. Our automated production lines utilize a specialized sealant and a reinforced stainless steel shell to ensure zero leakage.
- Inconsistent Sourcing: We mitigate supply chain risks with a 500,000-piece monthly capacity from our facility in China, ensuring your production line never stops.
Why Partner with PKCELL?
PKCELL Battery is a global leader in primary lithium technology with over 20 years of manufacturing experience. We specialize in producing Li-SoCl2, Li-MnO2, and custom battery packs. We are a preferred partner to manufacturers and distributors worldwide. Because we don’t just sell batteries; we provide certified energy solutions that empower your brand.
Frequently Asked Questions
Q1: Why is the CR2032 the standard for car keys instead of the CR2025?
A1: While both are 3V, the CR2032 is 3.2mm thick compared to the 2.5mm CR2025. The extra thickness allows for roughly 40% more capacity (220mAh vs 160mAh), which is essential for the high-frequency use of modern smart keys.
Q2: Can your batteries withstand being left in a car during hot summers?
A2: Yes. Our industrial-grade CR2032 lithium button cell is designed to operate up to 60°C, specifically to address the “dashboard heat” effect that often causes standard consumer batteries to fail or leak.
Q3: Do you provide customization for PCB mounting?
A3: Absolutely. We offer a variety of solder tabs (horizontal, vertical, or 3-pin) and can customize the pin configuration to fit your specific PCB design for automotive or industrial electronics.
Q4: What certifications do your batteries carry for international shipping?
A4: All PKCELL lithium products are certified under UN38.3 (Transport Safety), RoHS (Environmental), and CE/IEC (Quality & Safety Standards), ensuring no hurdles during customs or global distribution.
Post time: Feb-25-2026
