SIM7000G powers off after running LTE Demo

When I try to run the LTE_DEMO on my SIM7000G module, the power LED is on for about 3 seconds. Then the following is printed in the serial monitor. Then the power LED is off again. I have a 3.7 V LiPo 2000 mAh battery connected, the polarity is correct and also the solder connections between the arduino and the shield are fine. I don't know how to move on from here...



FONA basic test

Initializing....(May take several seconds)

Configuring to 9600 baud

Attempting to open comm with ATs

---> AT

<---

---> AT

<---

---> AT

<---

---> AT

<---

---> AT

<---

---> AT

<---

---> AT

<---

---> AT

<---

---> AT

<--- AT

---> AT

<--- AT

---> ATE0

<--- ATE0

---> ATE0

<--- OK

---> AT+GMR

<--- Revision:1529B01SIM7000G



OK



---> AT+CPMS="SM","SM","SM"

<--- +CPMS: 0,10,0,10,0,10

FONA is OK

Found SIM7000

---> AT+GSN

<--- 869951031080165

Module IMEI: 869951031080165

---> AT+CFUN=1

<--- OK

---> AT+CGDCONT=1,"IP","hologram"

<--- OK

-------------------------------------

[?] Print this menu

Read the ADC; 2.8V max for SIM800/808, 0V-VBAT for SIM7000 shield

Read supply voltage

[C] Read the SIM CCID

Unlock SIM with PIN code

Read signal strength (RSSI)

[n] Get network status

[1] Get network connection info

[c] Make phone Call

Get call status

[h] Hang up phone

Pick up phone

[N] Number of SMS's

[r] Read SMS #

[R] Read all SMS

[d] Delete SMS #

Send SMS

Send USSD

[y] Enable local time stamp (SIM800/808/70X0)

[Y] Enable NTP time sync (SIM800/808/70X0)

[t] Get network time

[G] Enable cellular data

[g] Disable cellular data

[l] Query GSMLOC (2G)

[w] Read webpage

[W] Post to website

[2] Post to dweet.io - 2G / LTE CAT-M / NB-IoT

[3] Post to dweet.io - 3G / 4G LTE

[O] Turn GPS on (SIM808/5320/7XX0)

[o] Turn GPS off (SIM808/5320/7XX0)

[L] Query GPS location (SIM808/5320/7XX0)

[E] Raw NMEA out (SIM808)

Create serial passthru tunnel

-------------------------------------



FONA>