I. Introduction: The Era of High Energy Density Power for Miniaturized Devices
Currently, wireless smart devices are continuously upgrading towards thinner, lighter, maintenance-free, and longer-lasting designs. Traditional batteries and ordinary supercapacitors struggle to achieve a balance across four key dimensions: size, energy storage, lifespan, and compliance. As an original equipment manufacturer (OEM) of capacitors, YMIN Electronics focuses on the demand for high-energy-density energy storage, launching the SLD series hybrid supercapacitors. Leveraging leading materials and processes, these supercapacitors break through energy storage bottlenecks, providing engineers, R&D personnel, and procurement staff in the European and American markets with compact power supply solutions that are feasible, mass-producible, and globally compliant.
II. SLD Series Core Technology: Where Does the High Energy Density Come From?
Yongming’s SLD series is positioned around high energy density, employing lithium-ion intercalation hybrid electrode technology. This technology combines activated carbon with lithium-ion intercalation composite materials, paired with a high-conductivity organic electrolyte. Through a dry electrode process, internal resistance is reduced and the active material loading is increased, achieving a significant leap in energy storage density while retaining the high-power characteristics of supercapacitors.
III. Core Performance and Key Data (Authoritative and Verifiable)
The SLD series demonstrates its high energy density advantage through real-world data; all indicators are from original manufacturer testing:
Volume Energy Density: Up to 174Wh/L (taking SLD 4.2V 1100F 16×50mm as an example)
Capacity Advantage: 15 times the capacity of a double-layer capacitor and 1.5 times that of a conventional hybrid lithium-ion supercapacitor for the same volume.
Volume Advantage: 90% smaller volume than a double-layer capacitor and 40% smaller volume than a conventional hybrid supercapacitor for the same energy storage.
Lifespan and Environment: Cycle life > 50,000 cycles, operating temperature -20℃ to +85℃, stable operation across the entire temperature range.
Performance Comparison: For the same volume, the SLD capacity is 1.71 times that of a conventional hybrid supercapacitor (SLA).
Figure 1: Capacity Comparison Curves of SLD and Ordinary Hybrid Supercapacitor SLA at the Same Volume
The test method involved constant current charging to the rated voltage, constant voltage for 30 minutes, and then constant current discharging to the minimum operating voltage. The results show that the SLD capacity is 1.71 times that of the SLA.
IV. Typical Application Scenarios: High Energy Density Creates Real Value
Based on its small size and high energy storage characteristics, the SLD series precisely addresses the power supply pain points of space-constrained devices and has been successfully implemented in three major scenarios:
1. Battery-Free Bluetooth Voice Remote Control
Traditional solutions are bulky and require frequent battery replacements; ordinary supercapacitors lack sufficient energy storage for long standby times. Yongming SLD 70F 8×25 mm achieves high energy storage in a slim and compact size, combined with light energy harvesting, achieving zero battery, ultra-low self-discharge, and lifetime maintenance-free operation, perfectly suited for slim remote control designs.
2. Auxiliary Power Supply for Wireless Doorbells/Electronic Doorbells
Doorbells are often installed in scattered locations, making battery replacement inconvenient; ordinary electricity is prone to voltage drops and has short standby times. SLDs offer 30%~40% higher energy density and lower internal resistance for their size compared to competitors, achieving longer standby time, more stable triggering, and lower voltage drop within a confined space, thus improving overall reliability.
3. Instantaneous Peak Power Supply and Data Backup for POS Machines
POS machines experience high power consumption during communication and scanning, have limited internal space, and suffer from short battery life. SLD 70F/100F, combined with power management, provides instantaneous high-current support, power switching buffering, and secure data backup, offering high safety and long lifespan, replacing traditional battery solutions.
Figure 2: SLD products actually installed in remote controls and POS machines
V. Global Compliance Certifications: Easier Exports to Europe and America
As the original manufacturer, ymin completes the entire process of safety and environmental certifications, reducing customer compliance costs:
UL810A (Component Safety)
UN38.3 (Supports Air Transport)
RoHS, REACH (Environmental Requirements)
IEC 62391-1 Test Report Available
Core Advantage: Classified as a capacitor, not subject to the new EU battery regulations (EU 2023/1542), making certification simpler.
VI. Original Manufacturer Support and Contact Us
As a capacitor manufacturer, ymin Electronics provides customers with one-stop technical and business support:
Obtain Specifications and Certification Materials | Request Samples | Verification Support
Circuit Design and Selection Guidance | Customized Energy Storage Solution Development
Post time: May-09-2026