The cruise time of iGS620/iGS618 is subject to the manufacturers’ measurement( close backlight, temperature is 25°C, GPS single star):
1) Backlight: we recommend setting it below 20%, keep the backlight bright will consume two hours of electricity; if the brightness of backlight is 100%, the power consumption is doubled, and the endurance is halved;
2) Temperature: If the temperature is 0°C, battery activity is reduced by approximately 20%, and the endurance is reduced by 20%;
3) Satellite: GPS+Beidou will increase consumption by 10%, and the endurance is reduced by 10%;
Cycling computers of other model are similar and have a strong relationship with backlight, temperature and signal strength.