Go here to see how to get a free 20 pack of Duracell batteries at Staples. You have to be a rewards member and the amount will be credited to your rewards account with the rebate check mailed in January.
Thanks Money Saving Mom!
Valid for purchases between 11/27/09 and 12/26/09. Valid in store, on staples.com or by phone. Staples Rewards will be mailed in January. While supplies last.