Okay, so, the cycle I was testing is now over. During reading, the battery didn't seem to drop at all. The battery was up around 95% for a while, then dropped to 54% and then to around 47% where it stayed for quite a while... and then dropped to 0% over night.
Averaged the battery dropped about 0.87% each hour which included mostly sleep mode and three reading sessions of about 45 minutes, and one batch of loading & reloading a book with processing and restarts.
Overall that means the battery lasts 116 hours, or 5 days. And that's being generous because I don't actually know how far into the night the battery lost its charge.
That's just crap.
Details in the spoiler for who's interested.
Spoiler:
Code:
Date & time Batt% Action after Sleep time %d %d ph Avg%dph Total%dph up time
5 Jan 2013 10:22 100% on, sleep
5 Jan 2013 12:51 98% on, sleep 2h 29m 2% 0.81 1.53 1.65 60 hours
6 Jan 2013 01:50 85% on, sleep 12h 59m 13% 1.00 3 days
6 Jan 2013 11:10 59% on, sleep 9h 20m 26% 2.79
Got rid of bad kepub
6 Jan 2013 13:42 100% on, sleep
6 Jan 2013 14:42 100% on, sleep 1h 0m 0% 0.0 0.89 0.86 116 hours
6 Jan 2013 16:46 100% chnge k* 2h 4m 0% 0.0 5 days
6 Jan 2013 18:11 95% on, sleep 1h 25m 5% 3.53
6 Jan 2013 23:21 95% on,read** 5h 10m 0% 0.0
7 Jan 2013 00:00 95% sleep 0h 39m 0% 0.0
7 Jan 2013 09:30 95% on, sleep 9h 30m 0% 0.0
8 Jan 2013 09:30 55% on, sleep 24h 0m 40% 1.67
8 Jan 2013 14:30 54% on, sleep 5h 0m 1% 0.2
8 Jan 2013 22:45 49% on,read** 8h 15m 5% 0.61
8 Jan 2013 23:19 47% l.off,sleep† 0h 34m 2% 3.53
9 Jan 2013 14:47 47% on, sleep 15h 28m 0% 0.0
10 Jan 2013 09:18 46% on, sleep 18h 31m 1% 0.05
10 Jan 2013 16:44 46% on, sleep 7h 26m 0% 0.0
10 Jan 2013 23:03 45% on,read** 6h 19m 1% 0.16
10 Jan 2013 23:55 45% l.off,sleep† 0h 52m 0% 0.0
11 Jan 2013 10:04 0% nothing 10h 9m 45% 4.43
*change kepub, restarting and processing etc
**on, reading+light
†light off, sleep