As a matter of fact, I recently replaced my battery, posted here somewhere, because when I was at the dealer getting my oil changed, part of the package is tire rotation and 27 point check. The load test for my battery came back "fair", the tech said I will be needing a battery probably within a year, but it's good for now.
After my oil change I went straight to NTB and had a new Interstate battery put in. I don't play.
I do not have jumper cables in my vehicle (a first), I have a battery pack (also a first). I have had people in parking lots standing there with their hood open holding jumper cables asking passerby's for a jump. When I explain that I can't with my vehicle, they give you a look like you're lying. When I say I have a battery pack, we could use that instead, they always decline saying they don't trust them. I don't try to educate them, I just say good luck and move on.