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Forerunner 735xt - more than 20% battery drain in 24 hours

Former Member over 7 years ago

Hi,

my Forerunner ist 4 months old and I´m pretty happy with this device. But sine four weeks, i have a little problem with it.

At the beginning, i have to charge the Forerunner every 6 or 7 days with 24/7 clock usage and moderate activity.
One time, the battery was too low and the Forerunner died. After that, it seems that the battery drain ist much higher than before with the same settings and usage.

I installed the Widget "Battery Gauge" and it shows a battery drain from about 1.2 - 1.5 percent per hour. So round about more than 20 percent a day.

I resetted the clock and installed the newest firmware (8.11) but the battery drain remains the same.

Is that battery drain normal? Maybe i was so happy at the beginning, that i don´t noticed it.

Best regards,
Daniel

0 KR17 over 7 years ago

Doesn't sound too bad.
Are the hrm lights on permanently, and also is the backlight on all the time?
The backlight seems to be the main drain.
The permanent hrm lights are an issue on some 235s and is a hardware fault.

0 Former Member over 7 years ago

Hey. Thanks for your answer.

Neither the HRM nor the Backlight are always on.

Best regards,
Daniel