SOP: Charge and battery test (sta:t4)

SYNTHETIC example. Rev C, 2026-10-14.

Operators: 1
Equipment: programmable USB-C load, 8-up charge rack

Steps

1. Charge current and battery check (op:charge). 5 V in, measure charge current and cell voltage. Target 20 s.

Tests and limits

Test	Lower	Upper
Charge current at 5 V	280.0 mA	360.0 mA
Cell voltage after 20 s charge	3.7 V	4.05 V