How big can a button cell battery be? Power Glory offers sizes ranging from 9.5 mm to 38 mm.
How big can a button cell battery be? Power Glory offers sizes ranging from 9.5 mm to 38 mm.
How small is a coin cell battery? The smallest coin cell produced by Power Glory measures just 9.5 mm in diameter, 2.0 mm in thickness, and weighs a mere 0.55 grams—so inconspicuous that it would go virtually unnoticed when mounted on a motherboard.
Yet, it is precisely this "infinitesimally small" battery that serves as the ultimate test of a company’s "grand capabilities." As a battery shrinks in size, the requirements for materials, packaging, consistency, and reliability become nearly demanding to the point of severity; with space compressed to the millimeter scale, every increment of performance must be "wrested" from the manufacturing process itself.
The product portfolio of Power Glory (stock code: 920237) begins with this tiny CR920 cell and extends all the way to the CR3832—a battery with a 38 mm diameter and an 850 mAh capacity. This expansive product range, spanning from the smallest to the largest, embodies the deep technical expertise the company has cultivated through more than two decades of dedicated focus on the field of lithium micro-power sources.
I. Compact Size: A Testament to Both R&D and Manufacturing Prowess
The CR920 measures 9.5 mm in diameter and 2.0 mm in thickness, with a nominal capacity of 20 mAh and a total weight of just 0.55 grams. Within such a confined volume, Power Glory has achieved a nominal voltage of 3V and a maximum pulse current of 5mA, while utilizing unique encapsulation technology to keep the annual self-discharge rate below 2%.
Small size leaves no room for redundancy. As the volume shrinks, the impact of any dimensional tolerances, assembly precision issues, or impurities—in components ranging from the cathode material and electrolyte to the sealing ring and casing—is magnified exponentially. The ability to achieve stable, mass-scale production of a battery measuring Φ9.5×2.0 mm is, fundamentally, a testament to a company’s dual capabilities in research and development and manufacturing.
II. A Broad Spectrum: The Result of an Extensive Product Lineup
A look at the specification sheet for Power Glory’s CR series reveals a vast array of models: from the CR920, CR927, CR1025, CR1216, CR1220, CR1225, CR1616, CR1620, and CR1632, through the CR2016, CR2025, CR2032, and CR2050, continuing with the CR2320, CR2325, CR2330, CR2335, CR2354, CR2430, CR2450, CR2477, and CR3032, all the way up to the largest model, the CR3832—this single CR series alone comprises 23 distinct models designed for standard-temperature operation.
Just how broad is this product spectrum? Diameters range from 9.5 mm to 38.0 mm—a fourfold span;
Thicknesses vary from 1.6 mm (CR1216/CR1616/CR2016) to 7.7 mm (CR2477);
Capacities extend from 20 mAh (CR920) to 1000 mAh (CR2477)—a fiftyfold difference.
Yet, coin-type batteries represent only a portion of Power Glory’s "eight core lithium battery product" portfolio. This lineup includes lithium-manganese coin cells (standard CR series, as well as wide-temperature CR-HT, CR-D, and CR-T series), lithium-carbon monofluoride (BR) coin cells, rechargeable lithium-aluminum alloy (ML) coin cells, and lithium-ion supercapacitors (LSC series). Complemented by cylindrical lithium-manganese batteries, soft-pack lithium-manganese batteries, and custom battery assembly services, these offerings form a comprehensive product matrix—spanning from micro-sized to cylindrical, primary (non-rechargeable) to rechargeable, and individual cells to complete power solutions. Power Glory ensures that no matter how much space is allocated within a device, customers can always find the perfect fit; the sheer breadth of this product family inherently simplifies the selection process.
III. Demanding Operating Conditions, Consistent Power Output
Scaling up in size is not merely an increase in dimensions; it represents an expansion of performance boundaries. The smaller the device and the more extreme the operating environment, the more effectively a battery’s "true mettle" is put to the test:
Resilience to Extreme Temperatures: The ultra-high-temperature CR/HT series can operate in environments ranging from -40°C to 125°C. These are specifically engineered for applications like Tire Pressure Monitoring Systems (TPMS)—devices mounted directly onto wheel hubs, where they must endure both intense heat and centrifugal forces. Meanwhile, the CR-T and BR (lithium-carbon monofluoride) series cover a temperature range of -40°C to 85°C. This broad thermal spectrum allows these coin-cell batteries to move beyond climate-controlled indoor environments and into automotive, industrial, and outdoor field applications.
Handling Pulse Currents: The high-capacity, high-power CR-P/H&X series offers 10%–20% more capacity than standard models of the same size. With a maximum continuous current of up to 20mA and pulse currents reaching 75mA, they are perfectly suited for the power requirements of devices like car key fobs, RFID tags, GPS units, and Electronic Shelf Labels (ESL)—which typically remain in a low-power, micro-ampere standby state, only to require a sudden burst of power for data transmission.
Ensuring Long-term Reliability: The HT series features an annual self-discharge rate of less than 1%. The ability to both "perform when needed" and "retain power during storage" represents the most fundamental—yet most challenging—promise for any micro-power source.
From motherboard real-time clocks to automotive key fobs; from electronic scales, POS terminals, and digital watches to medical instruments; and from smart home systems to data transmission for photovoltaic installations and natural gas pipelines—the application portfolio of Power Glory coin-cell batteries serves as an "invisible power map" for the era of the Internet of Things (IoT).
IV. Small Components, Significant Responsibilities
As tiny, easily overlooked components within a device, button batteries carry a critical mission: they must remain functional even when the main power supply is cut off. Power Glory meets this rigorous demand for reliability through a comprehensive system encompassing R&D, manufacturing, standardization, quality control, and risk management.
Manufacturing Scale: A Solid Foundation for Delivery
Founded in 2004, Power Glory operates an R&D and manufacturing base spanning over 100 mu (approx. 6.7 hectares), supported by a professional team of approximately 650 employees and a monthly production capacity exceeding 66 million units. With about 60% of its products exported to markets including the United States, Germany, Sweden, Japan, South Korea, and India, the company has long provided ODM services to internationally renowned brands, demonstrating a robust capability for large-scale, global delivery.
Standardization-Led: Setting the Industry Benchmark
Power Glory has participated in the drafting of five national standards, including "Primary Batteries – Part 1: General" (GB/T 8897.1-2021). As a vice-chair member of the China Lithium Battery Association, the company leverages its technical expertise to help shape industry standards.
A Comprehensive System, Laying a Solid Foundation for Automotive-Grade Quality
Power Glory holds certifications for ISO 9001, ISO 14001, ISO 45001, and the IATF 16949 automotive quality management system. It has been recognized as a National High-Tech Enterprise, a "Little Giant" firm (specializing in niche markets with cutting-edge technologies), and a "Green Factory" by the Ministry of Industry and Information Technology. To date, the company holds 91 patents—comprising 16 invention patents, 74 utility model patents, and 1 international patent—driving product upgrades through continuous innovation.
Comprehensive Risk Mitigation and End-to-End Safety Assurance
Power Glory’s products are covered by a $5 million global product liability insurance policy from CHUBB, providing risk protection across the entire lifecycle—from R&D to end-use—to ensure the safety of customers worldwide.
The history of Power Glory’s products is a chronicle of innovation, defined by the successful mastery of increasingly demanding requirements: smaller sizes, broader operating ranges, and resilience in more extreme environments. For over two decades, the company has remained steadfastly focused on miniature lithium power sources. In an era of the "Internet of Everything," where devices are becoming smaller, thinner, and deployed in increasingly challenging environments, the company that can provide a comprehensive range of millimeter-scale power sources—capable of operating under diverse conditions with reliable delivery—effectively holds the "heart" of the smart device era.
Power Glory: Small Batteries, Immense Energy.
