Description Base Bottom v1.1 is a universal base developed for the Basic (Core) host. Compared with the previous generation Core Bottom, this base is equipped with a battery switch at the bottom to help extend battery life. It contains an internal 110mAh lithium battery and extends 2.54mm pitch male and female headers for convenient user expansion. The bottom is embedded with magnets for magnetic attachment, making it suitable for different M5Stack mounting and expansion scenarios. Features Compatible with Core, Core2, and CoreS3 Magnetic base for easy attachment Built-in 110mAh lithium battery Battery power switch Extends 2.54mm pitch male and female headers Specifications Specification Parameter SKU M5-C001-C2 Product Name Base Bottom v1.1 Compatibility Core / Core2 / CoreS3 Battery 110mAh lithium battery Expansion Header 2.54mm pitch male and female headers Product Size 54.0 x 54.0 x 11.0mm Package Size 62.0 x 57.0 x 17.0mm Product Weight 22.8g Gross Weight 34.3g Interface Connects through the M5-Bus interface Provides 2.54mm pitch male and female headers for expansion Includes a battery power switch on the bottom Embedded magnets support magnetic attachment Applications Battery base expansion for M5Stack Core series hosts Magnetic mounting for M5Stack projects Portable Core/Core2/CoreS3 applications Header expansion for user-developed projects Product List 1 x Base Bottom v1.1 Other Content The pin mapping on the bottom sticker corresponds to the Core1 host, including Basic, Fire, and Gray. When used with Core2 or CoreS3, refer to the corresponding host pin mapping. Version update: the 2024.3 version added a battery power switch for the base. Resources Official Documentation Base Bottom v1.1 Schematics PDF FAQ What is Base Bottom v1.1 used for? Base Bottom v1.1 is a universal base for the M5Stack Basic (Core) host and can also be used with Core2 and CoreS3. Does it include a battery? Yes. It includes an internal 110mAh lithium battery. Does it have a battery switch? Yes. Compared with the previous Core Bottom, Base Bottom v1.1 adds a battery power switch on the bottom. Does it support magnetic attachment? Yes. The bottom is embedded with magnets for magnetic attachment. What is included in the package? The package includes 1 x Base Bottom v1.1.