Parts needed:
Heltec V4
Battery Li-Pol, 103665, 10*36*65мм, 2pin, 3.7V/30
3x M3x12mm screw
3x M3x5.7mm (or less 5.7) brass inserts.
GWS 16cm antenna
SMA to IPX-1 Pigtail Jumper 5cm
With much thanks:
E.Korsakov (Author)
The author remixed this model.
Adapted for big antenna GWS (GRANDWISDOM):
The antenna area has been cut down to 6 millimeters