When charging, if the voltage of 12V starting battery drops to 12.5V (cut-off voltage), the DC-DC charger should stop charging;
When the voltage of 12V starting battery resumes to 13.3V (turn back on voltage), the DC-DC charger will restart to charge; IP67 waterproof level;
When the voltage of 12V starting battery resumes to 13.3V (turn back on voltage), the DC-DC charger will restart to charge; IP67 waterproof level;