Dlyfull Introduces DCG-420 Pin Type Lithium-Ion Battery for Next-Gen Wearables

Dlyfull Group is pleased to unveil the DCG-420, an ultra-compact pin type lithium-ion battery purpose-built for the rapidly evolving wearable electronics and IoT device markets.

Designed for Miniaturization

The DCG-420 enables product designers to push the boundaries of compact device architecture. Its slim cylindrical profile supports seamless integration into space-constrained products where every millimeter counts, making it an ideal power solution for brands seeking small form-factor rechargeable batteries without compromising on reliability.

Key Features & Selling Points

• Ultra-Compact Design: One of the smallest cylindrical lithium-ion cells in its class, enabling sleek and lightweight end-product designs.

• High-Strength Metal Casing: Features a robust stainless steel exterior that maintains dimensional stability and resists swelling over the product lifecycle—delivering superior safety and long-term reliability compared to conventional soft-pack alternatives.

• Rechargeable & Reusable: Engineered for repeated charge cycles, supporting sustainable product strategies and reducing end-user replacement costs.

• Customizable Terminals: Factory-equipped with electroplated stainless steel terminals; tab configurations can be tailored to specific OEM assembly requirements.

• Rapid Charge Capability: Designed to support efficient charging protocols, minimizing device downtime and enhancing user convenience for portable wearable applications.

Ideal Applications

The DCG-420 is optimized for a wide range of miniature smart wearable and IoT devices, including:

• Hearing aids and audio assistive equipment

• True wireless stereo (TWS) earphones and wireless earbuds

• Electronic styluses and smart digital pens

• Smart glasses, AR/VR headsets, and specialty eyewear

• Wearable fitness trackers and recognition wristbands

• Compact medical devices and portable health monitoring systems

• Miniature IoT sensors, asset tracking tags, and security devices

Core Specifications

• Model: DCG-420

• Battery Type: Pin Type Lithium-Ion Battery

• Rated Capacity: 28mAh

• Nominal Voltage： 3.8V

• Max. Charging Voltage: 4.35V

• Dimensions (Max.): Ø4.55mm × 20.0mm (H)

• Weight: 0.55 gram

For detailed electrical characteristics, cycle life data, and safety certifications, please contact our sales team directly. ( email: sales@dlyfull.com )