Hi, I am a newbie so please bear with my newbie questions.
I was thinking of trying out Seeeduino Xiao + its grove shield. In the youtube video for that grove shield, it shows that a battery could be attached to its power bonding pad. I want to ask, what specs for the battery is recommended? I saw some 3.7 V lithium ion batteries on other websites, some with 70 MAH, some with 1000MAH. Which should I buy? I understand that in the wiki, the Xiao grove shield has a load capacity of 800mA and a charging current of 400mA. Is MAH and mA the same? (If needed for some context, I am thinking of using it to power the following modules: a 3axis accelerometer, a rgb LED matrix and a mp3 v3.0.) Also, I am assuming I would have to solder the battery to the bonding pad of the grove shield, am I right?