M5Stack® Gray Battery Bottom Plate 150mAh for M5Stack Arduino ESP32 IoT Development Kit I/O IO Extend Stackable Module Bus Socket

Description: Core BOTTOM is the bottom part of M5Core like M5Basic and M5 GRAY, with M-BUS socket and extend pins on the side, also include a Lipo battery . If you want to buy these bottoms separately, you can get it from here. M-Bus Package Included: 1 x M5Stack Gray Battery Bottom Plate