As already stated, objectively test a battery is difficult because the conditions should be the same temperature, conditions (intense, very intense,) frequency of use, etc. I will not venture on this ground there. However, it is safer than using such batteries is a guarantee of reliability, for maximum endurance and reliability .. Stored "normally" Duracell guarantee the full capacity of these batteries 10 years! 10 years!? it's very long and absolutely unverifiable! My batteries are guaranteed until March 2023, I have already "lost" half a year! Otherwise not a gram of plastic for packaging and possibility of leaving a stack package leaving others in place. NOT integrated control of the state of the battery, damage.
