Sold as "Duracell Plus" "power block", there is no indication on batteries they really are "power PLUS", so with a lifetime much more LONG. So, if the batteries are actually "Duracell power over" all is well. I recommend. If the batteries are "simple Duracell" is a deception and I do not recommend! I like to make sure my purchase. Not being sure ... 2 stars "I do not like!"