The Li-Polymer battery MB40 is a high-quality replacement battery specifically designed for the Motorola XT2143 Edge 20. Weighing 55 grams, this battery provides a reliable power source for your smartphone and ensures optimal performance. The battery falls under the category of device batteries and is classified as device-specific, meaning it is perfectly tailored to meet the requirements of the Motorola Edge 20. The use of lithium-polymer technology offers improved energy density and a longer lifespan compared to conventional batteries. This battery is an excellent choice for anyone looking to maintain or restore their device's performance. Please note that this battery is classified as a regulated battery, which means special disposal guidelines must be followed. The Li-Polymer battery MB40 is sold as a single unit and is an essential component for using your Motorola smartphone.