thanks @teastain2
is there a doc describing the min/max voltage we can use?

Hey,

I was wondering: what is the purpose of the JST-GH 1.25mm connector on the left side of the board?
https://www.lilygo.cc/cdn/shop/products/LILYGO-T-CAMERA-S3_12.jpg

It is not documented on the schematic but there are +/- signs on the board so I would guess it is to connect a battery maybe?
If yes what type of battery can we use?

Many thanks for your help