I'm not completely done but for now I'm getting this kind of stuff (for testing purposes, I report milestones every 5% and every 30 min. I also haven't added stats for the % milestones yet):
Wednesday 13-08-2014, 05.33: Battery down to 90%
Wednesday 13-08-2014, 05.44: Battery down to 85%
Wednesday 13-08-2014, 06.00: 15% lost over the last 30 min
Wednesday 13-08-2014, 06.21: Battery down to 75%
Wednesday 13-08-2014, 06.38: Power on at 73%
Wednesday 13-08-2014, 06.38: 26% lost in 1 hrs, 43 min, 20 sec
Wednesday 13-08-2014, 06.40: Battery up to 75%
Wednesday 13-08-2014, 06.51: Battery up to 80%
Wednesday 13-08-2014, 07.00: 6% gained over the last 30 min
Wednesday 13-08-2014, 07.02: Battery up to 85%
Wednesday 13-08-2014, 07.15: Battery up to 90%
Wednesday 13-08-2014, 07.29: Battery up to 95%
Wednesday 13-08-2014, 07.30: 11% gained over the last 30 min
Wednesday 13-08-2014, 07.31: Fully charged (1.981 min per %)
Wednesday 13-08-2014, 08.00: 5% gained over the last 30 min
Wednesday 13-08-2014, 09.19: Power off
Wednesday 13-08-2014, 09.59: Power on at 98%
Wednesday 13-08-2014, 09.59: 2% lost in 39 min, 58 sec
Wednesday 13-08-2014, 09.59: Power off at 98% (no charging rate available)
Wednesday 13-08-2014, 09.59: Power on at 98%
Wednesday 13-08-2014, 09.59: 0% lost in 0 sec
Wednesday 13-08-2014, 10.00: 2% lost over the last 30 min
Wednesday 13-08-2014, 10.27: Power off
Wednesday 13-08-2014, 10.27: Power on at 100%
Wednesday 13-08-2014, 10.27: 0% lost in 2 sec
Wednesday 13-08-2014, 10.30: Power off
Wednesday 13-08-2014, 10.30: Power on at 100%
Wednesday 13-08-2014, 10.30: 0% lost in 3 sec
Wednesday 13-08-2014, 10.45: Power off at 99% (-15.067 min per %)
Wednesday 13-08-2014, 11.00: 1% gained over the last 30 min
Wednesday 13-08-2014, 11.14: Battery down to 95%
Wednesday 13-08-2014, 11.30: 8% lost over the last 30 min
Wednesday 13-08-2014, 11.30: Battery down to 90%
Wednesday 13-08-2014, 11.44: Battery down to 85%
Wednesday 13-08-2014, 12.00: 9% lost over the last 30 min
Wednesday 13-08-2014, 12.25: Battery down to 80%
Wednesday 13-08-2014, 12.30: 2% lost over the last 30 min
Wednesday 13-08-2014, 12.46: Battery down to 75%
Wednesday 13-08-2014, 13.00: 9% lost over the last 30 min
Wednesday 13-08-2014, 13.02: Battery down to 70%
Wednesday 13-08-2014, 13.12: Battery down to 65%
Wednesday 13-08-2014, 13.42: Battery down to 60%
Wednesday 13-08-2014, 13.51: Power on at 60%
Wednesday 13-08-2014, 13.51: 39% lost in 3 hrs, 6 min, 1 sec
Wednesday 13-08-2014, 13.51: Power off at 60% (no charging rate available)
Wednesday 13-08-2014, 13.51: Power on at 60%
Wednesday 13-08-2014, 13.51: 0% lost in 2 sec
Wednesday 13-08-2014, 14.00: 8% lost over the last 30 min
Wednesday 13-08-2014, 14.02: Battery up to 65%
Wednesday 13-08-2014, 14.11: Battery up to 70%
Wednesday 13-08-2014, 14.19: Battery up to 75%
Wednesday 13-08-2014, 14.29: Battery up to 80%
Wednesday 13-08-2014, 14.30: 17% gained over the last 30 min
Wednesday 13-08-2014, 14.33: Power off at 81% (1.977 min per %)
Wednesday 13-08-2014, 14.35: Battery down to 80%
Wednesday 13-08-2014, 14.53: Battery down to 75%
Wednesday 13-08-2014, 15.00: 7% lost over the last 30 min
Wednesday 13-08-2014, 15.15: Power on at 72%
Wednesday 13-08-2014, 15.15: 9% lost in 41 min, 48 sec
Wednesday 13-08-2014, 15.22: Battery up to 75%
Wednesday 13-08-2014, 15.30: 6% gained over the last 30 min
Wednesday 13-08-2014, 15.30: Battery up to 80%
Wednesday 13-08-2014, 15.39: Battery up to 85%
Wednesday 13-08-2014, 15.46: Power off at 88% (1.96 min per %)
Wednesday 13-08-2014, 16.00: 8% gained over the last 30 min
Wednesday 13-08-2014, 16.07: Battery down to 85%
Wednesday 13-08-2014, 16.12: Power on at 85%
Wednesday 13-08-2014, 16.12: 3% lost in 25 min, 56 sec
Wednesday 13-08-2014, 16.22: Battery up to 90%
Wednesday 13-08-2014, 16.32: Battery up to 95%
Wednesday 13-08-2014, 16.33: Power off at 94% (2.127 min per %)
Wednesday 13-08-2014, 17.00: 5% gained over the last 30 min
Wednesday 13-08-2014, 17.04: Battery down to 90%
Wednesday 13-08-2014, 17.13: Battery down to 85%
Wednesday 13-08-2014, 17.30: 11% lost over the last 30 min
Wednesday 13-08-2014, 17.30: Battery down to 80%
Wednesday 13-08-2014, 17.59: Battery down to 75%
Wednesday 13-08-2014, 18.00: 6% lost over the last 30 min
Wednesday 13-08-2014, 18.30: 2% lost over the last 30 min
Wednesday 13-08-2014, 19.13: Battery down to 70%
Wednesday 13-08-2014, 19.25: Battery down to 65%
Wednesday 13-08-2014, 19.30: 9% lost over the last 30 min
Wednesday 13-08-2014, 19.39: Battery down to 60%
Wednesday 13-08-2014, 19.53: Battery down to 55%
Wednesday 13-08-2014, 20.00: 11% lost over the last 30 min
Wednesday 13-08-2014, 20.07: Battery down to 50%
Wednesday 13-08-2014, 20.21: Battery down to 45%
Wednesday 13-08-2014, 20.29: Power on at 41%
Wednesday 13-08-2014, 20.29: 47% lost in 4 hrs, 42 min, 43 sec
Wednesday 13-08-2014, 20.30: 11% lost over the last 30 min
Wednesday 13-08-2014, 20.36: Battery up to 45%
I don't find the results very satisfying, it looks messy. Not sure if it's because I report too often or because I report 2 types of stats at the same time. Any suggestions?
EDIT: small note because I'm picky, there's no 'Battery down to 80%' at the very beginning probably because I was in the middle of editing my profiles and tasks... There are also some useless stats probably when I started the car right after plugging in the phone.
EDIT 2: "(2.127 min per %)" is now "(2 min, 7 sec per %)", thanks to a reusable "ConvertToHMS" (Hours/Minutes/Seconds) task