CoconutBattery Online (http://online.coconut-flavour.com/) has massively aggregated Coconut Battery data ("over 150,000" data points) from the last five or eight years of Apple laptop models.
It helps give a sense of laptop cohort's battery longevity.
This popped up on HN last year, uses a much cleaner implementation:
The fix for this is disabling "Wake for network access" in the preferences.
The first MBA seems to have more moments of "drained" battery, represented by the orange/red colours being more predominant on the left side of the graph. This may signify more load being placed on the first MBA than the second MBA.
The second MBA seems to have had an unusual beginning to its life - lack of daily data and perhaps being left in a discharged state rather than charged. Might have some play on the initial degradation of the battery's capacity, but probably not.
If I understand correctly, I've read that fully charging a hot battery will degrade the capacity.
If true, I'd like smart recharging to target some optimal charge, say 95% full. (I think one of the PC laptops did this.)
It may be just my usage patterns but I never seem to get more than 4 hours on the 2013 Air. I mostly have a fair number of Chrome tabs along with a terminal window open and that seems to be enough to drain the batter rather quickly.
Allowing Flash to autoplay is wasteful as well.
edit: batlog a cronjob the author wrote
Popped up to explain myself. It appears that certain themes on HN attract down votes rapidly. Such as:
1. Criticising Apple's policy on repairability.
2. Suggesting that drugs are bad for you.
Two pretty pragmatic things on which I have a lot of experience of as a) an electrical engineer who did a lot of work with power conversion, charging and energy efficiency and b) someone who is married to a mental health nurse. Well when you attract a -4 instantly for both comments that suggests that there is a group opinion on HN. Rather than discuss the matter sensibly like adults, the prevailing approach is to quickly down vote a post so it is seen as irrelevant and to push the group think. Perhaps a worse thing to down vote is someone who asks for proof of an argument past an anecdote i.e. "shit or get off the pot".
This is as damn near religion as anything else and is not what I expect from a news site which is primarily technical. I expect a degree of intelligence.
Now this is an experiment for me as well because I have another account with the ability to down vote and over 2000 points against it. NEVER have I down voted a single post as I don't feel that is appropriate. Unfortunately it appears that anyone with a green label is treated as unfortunate fodder and easy money for the entrenched elite, the agenda-ists or the company shills (Google, Apple for example which are hard to say something bad about here without attracting down votes).
To solve this, I would rather that the down vote link is removed from HN and that if anyone finds content objectionable then they should flag it rather than spank it to oblivion.
I understand this forum has extreme moderation and dubious policies regarding such things but there is no excuse to be a pit of elitist assholes of the technical community. That is currently the only badge that HN can wear.
I expect better and I'm sure the majority of people do as well.
Reddit has a better moderation policy, a more rational and open minded user base and arguably better technical content in some subreddits. That's saying something.
I bet this gets down voted or flagged.
I was really interested in the article until this popped up. What a gross generalization.