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Ufine Battery Launches Ultra-Compact Curved Lithium Battery Designed for Next-Generation Wearables

11-25-2025 10:33 AM CET | Consumer Goods & Retail

Press release from: Ufine Battery

Ufine Battery Launches Ultra-Compact Curved Lithium Battery

Ufine Battery https://www.ufinebattery.com/ , a leading custom lithium battery manufacturer in China, is proud to announce the launch of its newest innovation: a curved (arc-shaped) Li-polymer battery https://www.ufinebattery.com/products/3-7-v-16mah-curved-battery-156825/ , engineered specifically for ultra-compact wearable applications such as smart rings, medical sensors, smart bands, and miniaturized IoT devices.

As wearable devices continue to evolve toward smaller, lighter, and more ergonomic designs, traditional flat lithium batteries often fail to meet the requirements for comfort and seamless industrial integration. Ufine Battery's new UFX156825 curved battery addresses this challenge with a form factor that naturally fits wearable contours-without compromising energy density or reliability.

Compact Power in a Curved Form

The newly released curved battery delivers 16mAh capacity at a nominal voltage of 3.7V, with a charging voltage of 4.2V. Its extremely compact dimensions-approximately 1.5 × 6.9 × 25 mm (max)-make it ideal for ring-type devices where space is extremely limited.

Key Specifications:

- Capacity: 16mAh
- Nominal Voltage: 3.7V
- Charging Voltage: 4.2V
- Dimensions: 1.5 × 6.9 × 25 mm (Max)
- Charging Current: Typically 0.5C to 1C
- Discharging Current: Typically 0.5C to 1C
- Charging Temperature: 0°C to 45°C
- Discharging Temperature: -20°C to 60°C
- Storage Temperature: -20°C to 45°C
- Cycle Life: Typically 300 cycles
- Internal Resistance:

Ufine New Energy Co., Ltd.
Global Marketing Center Office: Room 3406, 3407, 3408, Fucheng Times Square, No. 1 Guangshen Road, Xin'an Street, Bao'an District, Shenzhen, Guangdong, China
Rachel Lau
xiaotuanyuan@ufinebattery.com

About Ufine Battery

Ufine Battery is a professional lithium battery manufacturer based in China, specializing in custom lithium polymer batteries, LiFePO4 batteries, cylindrical cells, ultra-thin batteries, high-rate batteries, and batteries designed for extreme temperature environments. With strong R&D capabilities and years of manufacturing experience, Ufine Battery provides OEM/ODM support for diverse industries including wearables, medical devices, IoT, consumer electronics, smart cards, robotics, and more.

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