Shield turns off after running through AT command menu

[kegrantham]

I have the Boteltics 7000A shield, it is connected how you instructed through the indestructible setup. It is stacked on an Arduino Uno. Using a registered Hologram Sim card. Lipo battery is 3.7V 2000mAh and is connected correctly to the pos and neg. I've checked all soldered joints and all are good. The Arduino is being powered by USB, Shield is powered by Lipo battery, and antenna is connected to correct LTE and GPS locations on shield. And the correct FONA library is installed with no other Adafruit FONA libraries installed. The green "done" LED is on.

I am trying to run the LTE_Demo sketch. It successfully compiles and uploads. In the Serial Monitor, the AT command menu prints. While the menu is printing, the "NET" LED blinks and the "PWR" LED turns on. Once the menu finishes printing, the "NET" and "PWR" LEDs turn off, but the "DONE" LED stays on. Though, once the "NET" and "PWR" LEDs turn off, I cannot communicate with the shield.

I've looked through the Botletics forum and have tried all of the troubleshooting tips you've suggested on there and here on github. Any idea why this is happening? Or what I should do to fix it.

Attached is the output in the Serial Monitor:

at this point the PWR and NET LEDs turn off. Though, I still tried typing commands and this is the result:

[botletics]

Only thing I can think of would be the polarity of the battery, but you said it's correct. Could you please double-check if the red wire is on the left side of the JST connector when you plug the battery into the board?

Also, it could be that there's not a very solid connection on pins 10 and 11. It may be worthwhile to check the solder joints on those pins. The fact that it's taking so many "AT" commands before it finds the shield may point to this potential problem.