Hello folks, I've found a great deal of information on the battery life of a Surface Pro 3 given certain levels of usage, but I haven't found anything on the expected lifespan (in years hopefully) of the 42.2 Wh, 7.6 V, lithium ion battery it boasts. Does anyone have any insight into how long a battery like that can last? Especially since the SP3 is not a device that should really be opened https://www.ifixit.com/Teardown/Microsoft+Surface+Pro+3+Teardown/26595 I would expect there to be more chatter about the long term investment side of the device. While I love this amazing device, I'm not sure I'd want to continue to invest the $1200 I put into it every four to six years (rough average lifespan of laptop battery). OKAY, I am taking a few things for granted: 1) that the Surface Pro 3 wont be much cheaper by then 2) that my computing needs/wants won't grow (Surface 6 anyone?) 3) I won't be in a financially much better situation than I am now as a graduating senior in college making my concerns obsolete.