LP-521423-1S-2 Li-Polymer Battery 3.7V 160mAh Rechargeable Cell for Bluetooth Headsets

The LP-521423-1S-2 3.7V 160mAh 0.52Wh Lithium Polymer Battery is a precision-engineered power solution designed for miniaturized electronic devices where space and weight are critical constraints. This compact battery combines high energy density with flexible design, making it an ideal choice for portable tech, wearable devices, and small-scale industrial sensors.

Operating at a stable 3.7V nominal voltage (with a safe range of 4.2V fully charged to 3.0V discharged), this battery delivers consistent power to low-consumption electronics. Its 160mAh capacity and 0.52Wh energy rating provide reliable runtime--powering wireless earbuds for 4-6 hours of continuous use or smart fitness trackers for 3-5 days of intermittent operation. The 1S single-cell configuration ensures simple integration into device circuits without complex voltage management.

True to its LP-521423 model designation, this battery features a slim form factor (approximately 5.5*14.6*26 mm) that fits seamlessly into ultra-thin devices. Unlike rigid cylindrical batteries, its lithium polymer construction offers moderate flexibility, allowing it to conform to curved or irregular device enclosures. This design advantage makes it perfect for compact gadgets like medical patches, Bluetooth tags, and miniaturized IoT sensors where every millimeter counts.

Safety is prioritized through a multi-layer protection system, including built-in safeguards against overcharging, over-discharging, and short circuits. The aluminum-plastic film packaging prevents leakage and enhances thermal stability, ensuring safe operation even in enclosed device housings. With a cycle life exceeding 500 charge-discharge cycles while retaining over 80% capacity, this battery delivers long-term reliability for everyday use.

This battery excels in real-world conditions with a low self-discharge rate (less than 3% per month), ensuring it retains charge during storage for emergency devices or infrequently used gadgets. It operates efficiently across a wide temperature range (-20°C to 60°C), making it suitable for both indoor and outdoor applications. Compatible with standard 3.7V chargers, it reaches 80% capacity in approximately 1 hour, minimizing downtime.

Beyond consumer electronics, this battery powers industrial micro-sensors, RFID tags, and portable medical devices like fingertip pulse monitors. Its compliance with safety standards and compact footprint also make it ideal for DIY electronics projects and custom device builds requiring a reliable, space-efficient power source.

• Wearable devices (smartwatches, fitness bands)
• Bluetooth accessories (TWS earbuds, headphones)
• IoT sensors and smart home devices
• Portable medical monitoring equipment
• Mini drones and electronic toys

• High energy density in compact size
• Consistent performance with low self-discharge
• Custom configurations available (connectors, protection circuits)
• Strict quality control for reliability and safety

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, we've specialized in battery pack assembly and PCM/BMS design and production. Our 5,000-square-meter factory features automated production lines and SMT assembly capabilities.

ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB - our battery packs have reliable quality assurance.

No limitation - we offer competitive pricing based on order quantity. Sample orders are welcome to test our quality before bulk orders.

Standard warranty is 12 months (negotiable for special products). Our complete production process ensures quality before shipment.

Standard products: 3-4 weeks for samples (depending on cell availability), 5-8 weeks for bulk orders (varies by model and quantity).

Yes - our professional R&D team can provide customized solutions according to your requirements.