08400 3.7V 180mAh 5C Cylindrical Lithium Polymer Battery Cell for Portable Device

The 08400 is a slim cylindrical lithium polymer cell with a nominal capacity of 180mAh and a nominal voltage of 3.7V, built in a compact 8.0 mm x 40.0 mm round format. Its 5C high-rate discharge capability lets it release power quickly, making it suitable for compact devices that need short bursts of higher current.

Unlike hard cylindrical cells, this cell uses a soft-pack construction that keeps it light and slim. It is a practical, rechargeable replacement power source for small portable products such as portable electronic devices, smart pens and wearable accessories.

• Slim round format: 8.0 mm x 40.0 mm size fits narrow housings.
• 5C high-rate output: supports pulse and medium-current draw for small devices.
• Lightweight: soft-pack cylindrical design weighs only about 5g.
• Stable 3.7V output: with 4.2V charge voltage for simple integration.
• Long cycle life: 500+ charge cycles reduce replacement cost.
• Flexible supply: sample testing and OEM/ODM customization available.

Typical applications include portable electronic devices, smart pens and styluses, Bluetooth earbuds, beauty and skincare devices, small LED products and wearable accessories. The compact round format also suits other miniaturized products where a thin cylindrical rechargeable cell is required.

We support OEM and ODM projects with flexible configuration, including custom capacity, wire length and connector type, tab and lead options, and private labeling. If your product needs a specific round cell size or discharge rate, our engineering team can confirm the design before mass production.

Each cell is inspected for appearance, voltage and capacity before shipment and packed in industrial cartons that comply with international air and shipping standards for lithium batteries. In-stock items are dispatched quickly, while custom and bulk orders are produced within 2 to 3 weeks after confirmation. Sample testing is available so buyers can verify dimensions and electrical performance before committing to volume. Contact our sales team today for pricing, minimum order quantity and OEM/ODM cooperation.