Waveshare 4G HAT (B). Waveshare HDMI touch screen (schematic)

1.

BATTERY 1
BATTERY 2
BATTERY
CHARGER
WAVESHARE 4G HAT (B)
GPS
ANTENNA
DC/DC BUCK
CONVERTER
SCREEN
LOCK
GSM
ANTENNA
POWER
SWITCH
MICRO
USB
MIC
MALE
TRRS
5V RELAY
PAM8403
AUDIO
AMP
10uF CAP
RASPBERRY PI 3B
WAVESHARE HDMI TOUCH SCREEN
SPEAKER
MICRO
USB
PI CAMERA
MALE
STEREO
10K POT
VOLUME
KNOB