Battery increasing in capacity over time?

[Michael Hill]

Someone who is smarter than me about lead acid batteries please explain why it appears that battery capacity is increasing every year...

For the past few years, I have been testing some batteries with a West Mountain Radio CBA IV Battery Analyzer (7.5A down to 8.5V). In both of our 2014-1 and 2014-2 batteries, the capacity appears to have increased. I'm not too certain why the 2014-1 test appears to be a bit "choppy" this year, but it probably had to do with me bumping the wires at one point (is it really that sensitive?). I don't really want to torture the batteries in another retest to find out. Do I have magic batteries or is there something goofy happening with my battery analyzer/test setup?


http://i.imgur.com/TGrM23u.png

http://i.imgur.com/H08yQNZ.png

Also, sorry about the chart legend being out of order...not quite sure how to fix that without importing the data into Excel (which I can do, but I'm pretty lazy)