For the battery to be connected to the nPM1300 Power Management Integrated Circuit (PMIC), a jumper must be connected between pin 1 and pin 2 on pin header P1. This connects VBAT to VBATIN.
Figure 1. VBAT and NTC jumper schematic
Note: During current measurements with a resistor mounted on R1,
make sure the VBAT jumper on P1 is not connected. For more information, see
Measure current.