Bip S Battery Life with Heartrate PAI

Hi folks,

I just got my Bip S a week ago and was wondering about a probably short battery life.

I use the following settings:

- heartrate monitor interval set to 1 minute (because PAI needs this?)

- Sleep tracking turned on

- notifications turned on for whatsapp, I guess about 20-40 notifications per day

- raise wrist to wake turned on

- display brightness set to half power

- Did GPS-workouts for about 6 hours

- Watchface from Zepp-App

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The battery lasted only about 6 days. Is this normal, or do I have some problem with my firmware etc.?