M5Stack BTC Standing Base is designed for the M5 Core with SHT30 allowing it to stand instead of laying them down or hang on them on the wall. The M5Stack BTC Standing Base is a seat for holding the M5 Core and features temperature and humidity detection (by SHT30) and a charging base.
The M5Stack BASIC and GRAY Core can be attached to the base, but the BTC cannot charge them. After plugging in a USB cable, the core is powering without any charger.