I bought a retina macbook pro yesterday and noticed a "Service battery" warning. It was there for a few hours and now has gone. Should I take it back to the store or do you think it's safe to ignore?
Update: The following day, the laptop battery was completely drained after being 100% the night before (and fully powered down). The "Service battery" warning also re-appeared. I took it back and it was just swapped it for a new one.