Provided NK-4B Phone Lithium Battery Protection Board is simply installed in LED bulbs & tubes. It is widely found in LED technologies as it removes various LEDs required to produce a particular illumination. To ensure its zero defect nature it is tested on different quality parameters under the guidance of our trained quality analysis team. In addition to this, offered NK-4B Phone Lithium Battery Protection Board is widely used in electrical industries for some particular purposes and known for their features like smooth operation, long service life and excellent functionality.