502020-3C 3.7V 150mAh Lithium Polymer Battery Rechargeable OEM ODM Custom Lipo Cell

The 502020-3C 3.7V 150mAh Lithium Polymer Battery is a rechargeable lithium-polymer pouch cell engineered by VATS Battery for reliable, long-lasting power in modern electronic devices.

The 502020-3C is a 3.7V 150mAh lithium-polymer pouch cell manufactured by VATS Battery, an ISO9001-certified lithium battery maker based in Guangdong, China. Built on a compact customizable footprint, it combines a stable 3.7V nominal voltage with a true 150mAh capacity, so portable devices run longer on a single charge without adding bulk.

Each cell is produced on automated lines and individually screened for capacity, voltage and internal resistance before shipment, which keeps batch-to-batch consistency high and makes the 502020-3C a dependable drop-in power source for OEM and ODM programmes. Because the chemistry, dimensions and protection circuit can all be customized, engineers can either select this standard model or ask us to develop a bespoke cell around a specific power, footprint and cost target.

• True Rated Capacity: Delivers a genuine 150mAh at 3.7V, verified by capacity, voltage and internal-resistance testing on every production lot.
• Stable Output: A flat discharge curve holds close to 3.7V, protecting sensitive circuits and extending usable runtime.
• Long Cycle Life: Rated for more than 500 charge–discharge cycles with excellent capacity retention.
• Certified Safety: Compliant with IEC62133 / UL / CE / CB / KC / UN38.3 / MSDS, with built-in protection against over-charge, over-discharge, over-current and short circuit.
• Flexible Customization: Size, capacity, voltage, connector, wire length and PCM can be tailored to your design; OEM and ODM are both welcome.
• Ready to Integrate: Supplied with JST / Molex (optional) so the cell can drop straight into your assembly line.

Thanks to its slim, lightweight build and stable 3.7V output, the 502020-3C fits a wide range of applications including digital products, Bluetooth devices, GPS trackers, power banks and portable electronics. Typical end products are Bluetooth speakers and headsets, fitness wearables and smart watches, GPS trackers, medical and healthcare instruments, beauty and personal-care devices, IoT sensors, LED lighting, toys and portable power banks. Its customizable connector and protection circuit simplify integration, reducing assembly time and supporting both prototyping and high-volume mass production.

Every 502020-3C is packed in industrial cartons with anti-static trays and shock-absorbing material that meet international air and sea shipping standards, protecting the cells throughout transport. VATS Battery produces over 300,000 cells per day and exports to more than one hundred countries, offering a seven to twenty day lead time, free samples for evaluation, and a twelve-month warranty. If you need datasheets, samples or a custom specification, contact our sales team and we will match the right cell to your project and support you from prototype through mass production.