Hello, I'm trying to develop a power fail detector that send an SMS alert. I think that MKR GSM 1400 can make this task so easy, but I have two questions.
The battery connected will be charge when is connected to USB or Vin?
This is important because if the power goes down and battery starts to work, when power returns the battery should be charge completely to be ready just in case another power fail occurs.
Has it any protection circuit to cut power to battery when it is completely charge? Then is safe get the MKR GSM 1400 always connected to power?
This is important, because, I don't like the battery explode and generate a fire.