The L21M4P73 is an original battery from Lenovo, specifically designed as a replacement battery. With a capacity of 52 watt-hours (Wh) and 3400 milliampere-hours (mAh), this lithium-polymer battery provides a reliable power source for various Lenovo devices. The battery consists of four cells that ensure stable performance and deliver a voltage of 15.44 volts (V). The L21M4P73 is ideal for users who need a powerful and long-lasting battery to maintain the functionality of their devices. The manufacturer's commitment to sustainability, supported by the Science Based Targets Initiative (SBTi), also promotes an environmentally conscious approach. This battery is an excellent choice for anyone who values quality and reliability.