Groupon offers the Sony Stamina Plus AAA Battery 72-Pack for $17.99 plus $2.99 for shipping. That's $0.29 per battery and the lowest total price we could find by $24, although we saw them for $1 less two weeks ago.

Also available is the Sony Stamina Plus AA Battery 72-Pack for $18.99 plus $2.99 for shipping. That's $0.31 per battery and the lowest total price we could find by $35, although we saw them for $2 less two weeks ago. Deals end January 3.