BFL13 wrote:
Got them home, and stickers said "M19" which turns out to be December, but another sticker said 11/19. Recharge by 6/20. Whatever.
So--the moral of the story is-- YES! Charge those suckers up-- any new battery. You don't know where it's been and what its state is on getting it home unless you check.
BTW I am not mad at Can Tire. I expected that sort of thing, but not 50% for a November battery on 2 Feb. So that is confirmation they do self discharge way more than 12s and AGMs.
Good that you checked and found them low. I'm not sure about Canadian Tire and the date stickers. But I was told at Costco that the date stickers on their batteries are when the battery was placed on the shelf, not when it was manufactured. So a battery could conceivably be much older than the sticker on it implies.