@teastain2 Thank you! I will try when I get back home

I confirm that this has solved my issue and mark it on the title for the posterity, many thanks!

edit: apparently titles cannot be edited after a while, if a moderator could add "[SOLVED]" to this thread's title, it would be helpful for others

@teastain2 Thank you! I will try when I get back home

Hello everyone,
I am using my Lilygo T-Display S3 to make an halloween project.
At the moment I'm just using the display to show something, and the device is powered by a powerbank via the USBC port. But I wanted to make the project smaller and portable.

So I bought 4x LiPo Batteries with its own re-charger, I have charged up the batteries and connected each of them to the T-Display S3 with the JST port: it won't powerup, no battery is working with the device. What am I doing wrong?

The LiPo batteries: https://www.amazon.it/dp/B087LTZW61?psc=1&ref=ppx_yo2ov_dt_b_product_details
Specs: 3,7 V 1100 mAh with Micro JST 1.25

The recharger: https://www.amazon.it/dp/B0BN3X7MX9?psc=1&ref=ppx_yo2ov_dt_b_product_details

Hello,
What I want to achieve: I want the device to work while powered via an USB power bank
What happens: when I connect the device to the powerbank nothing happens. Only if I connect it to the computer, with the Arduino IDE opened, and only when I open the serial monitor, then the code will start running

Can anyone help me on this?

1- Can the device be freely powered via an USB power bank? I don't have a lipo battery, and I wouldn't like to solder anything
2- How do I make the code run when not connected to a computer?

I have successfully verified, compiled and uploaded my code to the device, I have booted the device as specified on point 2 on the "Tips" section of the README https://github.com/Xinyuan-LilyGO/T-Display-S3.