My brand new Ph meter got submerged and it fried the batteries.  Shopped around a bit and was pretty amazed to find this pack of 20 batteries for barely even 3 dollars when other sites had smaller quantities for more money.  I was so sure this was gonna be a burn but figured for a couple bucks why not, well they arrived and the following proved true.

1. There ARE 20 of them.
2. They were factory sealed brand new.
3. Using 4 of them at the moment and I am VERY pleased.

Thank you Amazon!