The Lithium-Ion Polymer Battery 3.7V 300mAh is a compact and lightweight rechargeable battery designed for portable electronics, IoT devices, wearable technology, and embedded systems. Utilizing lithium-polymer technology, it provides a nominal output voltage of 3.7V, reaching 4.2V when fully charged and safely discharging down to 3.0V through its integrated protection circuitry. The battery comes pre-attached with a genuine 2-pin JST-PH connector for quick integration into compatible devices. Built-in protection safeguards against overcharging, over-discharging, and short circuits, ensuring reliable and safe operation in battery-powered applications.