Are Costco batteries made by interstate?

Are Costco batteries made by interstate?? Are Kirkland batteries just as good as Duracell? Do Kirkland or Duracell batteries last longer? Both weakened at the same time , but Duracell beat Kirkland by five minutes with a total lifespan of 5 hours and 56 minutes. The coppertop came out on top. Kirkland’s price is what … Continue reading Are Costco batteries made by interstate?