FireBeetle 2 ESP32-E IoT won't power up from LiPo

[AdamDevelopment]

Hi everyone,

So, long story short, I need to have ESP32 working on my LiPo battery, which is AKYGA 3.7V 4000mAh. I've converted the battery connector from JST-BEC to JST-PH2.0 to be able to plug it in into my ESP32, but I ran into a problem, which is that battery is not powering up my microcontroller. The more bizzare thing is that ESP32 is charging this battery, but when unplugged from USB, with battery plugged in, it completely shuts off.

Battery is good, meter shows 3.94V. I've tried powering it up with my Xiaomi powerbank, and it's working flawlessly. What am I missing?

[ESP_LJH]

Could you show us your schematic and we could see what is your power block.

[AdamDevelopment]

Do you mean schematic from my microcontroller's datasheet, my schematic of connecting an battery or?