The BTI notebook battery by Battery Technology is designed to provide a reliable power source for your laptop. With a capacity of 3711 mAh and a voltage of 15.36 V, this lithium-ion battery ensures longer usage times, allowing users to work without frequent interruptions. Featuring four cells and a total capacity of 57 Wh, this battery delivers consistent performance. Compatible with Lenovo L20L4P72, the BTI notebook battery offers an effective replacement solution without compromising quality. Make the switch to this efficient battery to enhance your productivity and keep your device running smoothly.