@teastain Thanks for checking and confirming. If the Lilygo indeed has an onboard Li-ion charger, then i highly suspect my battery interface is toast. I have not at any point reversed the polarity.

No problem i guess, i just have to change the design of my project to leverage an externally connected USB-C circuit. not ideal as the project isn't "independent" but until i get another unit, it'll have to do.

Good to know that its supposed to have an on-board charger and can take a li-ion battery though!

Thanks lots!

@teastain that can work... but i guess its going to look big and not as sleek anyway, might as well save myself the trouble.

nah.. thats ok.
maybe for the next project.. hahaha

@teastain Thank you! this is insightful. Really appreciated. i'd have to look into it when i have the time... perhaps the type of battery? i don't know. but at this point.. USB-C it is.. hahahah

@teastain that can work... but i guess its going to look big and not as sleek anyway, might as well save myself the trouble.

nah.. thats ok.
maybe for the next project.. hahaha

@teastain Thanks for checking and confirming. If the Lilygo indeed has an onboard Li-ion charger, then i highly suspect my battery interface is toast. I have not at any point reversed the polarity.

No problem i guess, i just have to change the design of my project to leverage an externally connected USB-C circuit. not ideal as the project isn't "independent" but until i get another unit, it'll have to do.

Good to know that its supposed to have an on-board charger and can take a li-ion battery though!

Thanks lots!

@teastain Thanks continuing to help!
Yes.. quite sure of the polarity. Red is +ve and Black is -ve. It also matches correctly to whats printed on the PCB.
i measured on loaded output of the battery again and confirm its 4.2V at least.
Connecting the battery and pressing reset only causes a brief green flash.

Powering via the USB-C port has no issues. That works fine.

Is there any other way i can power the board? through some direct pins maybe?

Curious, can the board be connected to the the Li-ion battery and be connected to the USB at the same time? Will the board auto switch the power supply?

@teastain i did test the battery under load as well. it can indeed deliver the voltage required. did you manage to test your unit with a battery? i'd be interested to know the outcome..

Thank you for your help!

@teastain I was really hoping to create a low power draw device that is more portable and therefore no "external wires" wherever possible.

Yes. i multi-meter tested the battery and it reads 4.2V before i plugged it in.

i'm starting to feel that i got a lemon...

@teastain Thanks Terry

I soldered up the tiny connector with 2 leads to a small Li-ion battery (280mah 4.2v) but the unit doesn't power up..
The green light provides a brief flash when the reset button is pressed and that was it.
i also made sure that the battery was charged up.

Did you manage to get yours working with a battery? what battery did you use?

thank you for the advice!

hi

I have the ESP32-S3.
I cannot figure out how to power the device via battery. It has a JST port and another port.. Which port do i connect to in order to power the device via a Li-ion battery?
What is the connector type that i need?

This is not very clear to me from the pin diagram. can someone provide me some pointers?

Thanks