18650C HAT is a rechargeable battery base designed for M5SticKC with built-in 18650 large capacity rechargeable lithium battery.It can provide long-term endurance for the equipment. The base is designed with the plug-in structure of the HAT series, which can be used to maintain reliable connection with the M5StickC. The bottom is equipped with a USB interface charging interface, which is convenient and quick for the battery. The USB port of the battery base is only used as a charging interface, and does not have UART function.There are many types of mounting holes on the back of the base,which can be easily installed by the user into all types of planes.
Note: The M5StickC produced after October 2019 has a new fixing hole design. If your M5StickC is an old device (no fixing hole), you cannot use screws to fix it to the 18650CHAT, but this does not affect Functional use of modules
It offers large battery capacity for about 2 days of continous usage. There are screws to fit the adapter to the wall ot other items, but nothing to fit the M5StickC to the adater, so it is a little bit lifted and does not hold firmly.
A screw hole for fixing was added to the bottom of the M5StickC main body for a while, but the 18650C did not have a screw.
From this time, fixing screws are included.
To build battery powered devices this hat is very important.
Details in my German blog