Simple freshness/goodbye confirmation. I bought them in September 2020, sent Revain and sold them. The date on the box was "Copyright 2019". The batteries were stamped "12-2029". As these batteries are described as having a "capacity of up to 10 years of storage", the hallmark implies manufacture in December 2019. They were fully charged with no leaks. They were packaged in a box of 24 as shown in the picture, with six boxes of 4 inside the box. They are referred to as "E91WP-4".
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