Originally Posted by
Iride01
A entire pack of Duracell's that I think I bought at Costco were the ones that I had to toss almost every one out. So nothing is for certain. Especially with coin batteries.
Costco has excellent customer service. You should have returned the batteries for either replacement or refund.
Personally, I have never had a bad Duracell battery.
YMMV
fat biker