The Lenovo notebook battery with 4 cells and a power capacity of 70 watt-hours (Wh) is a reliable energy source for various Lenovo notebooks. With a voltage of 15.52 volts (V), this lithium-ion battery offers optimal performance and longevity. It has been specifically designed as a replacement battery and is ideal for users who need a dependable and powerful power supply. The use of lithium-imide technology ensures a high energy density and an improved battery lifespan. The battery meets the requirements of UN number 3480 and falls under the category of device batteries, highlighting its safety and reliability. The battery is an essential accessory for anyone looking to enhance their productivity by extending their notebook's runtime. With the Lenovo 4-cell battery, you are well-equipped to efficiently complete your tasks without worrying about a constant power supply.