Unfortunately in flight WiFi only has regulatory clearance over the US, so this is a long way away.
It still won't make the flight bearable, though, because as soon as the person in front of you reclines, you can't open your laptop anymore. This has happened to me more than once. (Now I can book exit rows, so this isn't a problem for me, but not everyone is in that position; especially on international flights.)
Fortunately, some airlines are beginning to install "shell" seats in the economy section, so people can't recline into your space anymore. I think it's only CX right now, though. Here's a link:
For the usual flight, battery is fine and wifi is a win!