Rnergizer 9V2 Ultimate Lithium batteries. 2 batteries per package and I have a total of 6 packs for sale in this listing. You are buying all 6 packs for a total of 12 batteries.

These batteries have a 10 year shelf life. The expiration date on the side of the bstteries is 12/2032. So you havd time to use them. These are also 100% lesk proof.