I don't know who makes them for Costco but I won't be buying those anymore.
So what will you be buying instead? ![Popcorn :popcorn:](https://www.eevblog.com/forum/Smileys/default/EatingPopcorn.jpg)
Costco Alkalines, rated for space travel (preferably return flight travel
![Scared :scared:](https://www.eevblog.com/forum/Smileys/default/scared.gif)
) with a long use by date,
receipt stored with the batteries in paper form, in a separate vacuum sealed dark plastic bag
and a digital copy kept in the cloud,
the highest cloud cluster possible, in case of claims whilst in space.
Leaking alkalines are strong candidates for entry into the 'some things are certain in life' club
alongside death and taxes
----------------
Just today I discovered a sealed 10 pack AA alkalines (
Long Life = lol) from ALDI totally leaked and crusted up
stored alongside my cheapie inspection camera.
Room temperature and aircon etc Luckily the plastic cover seal held as did the cardboard backing.
Yet a four pack of same blue batteries, in an open heatshrink plastic, supplied with the electronic item, had not leaked
Perhaps alkalines don't like to be stored with no air = ?
![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif)