Hi there!
I have the 15.19 FW version since last Friday and my battery has dropped more than 50 % in the last 24 hours. I did just a GPS run activity on Saturday morning of 1h30min with 'All Systems' GPS mode. When I started this activity I had 83 % battery left and 24 hours later I only have 32 % left.
I'd never had this problem before.
Could you, please, help?