If need batteries, here is a great deal after Office Max Rewards.

Buy (2) Duracell Batteries $16.99 each
Get $16.98 each back in Max Rewards
Like paying $.01 each after Max Rewards

They can be purchased both in store and online.   You can use your Max Rewards to purchase items in store.

* Member’s MaxPerks ID card must be presented at time of purchase; no Bonus Reward adjustments will be made after purchase. All Bonus Reward offers valid in store, online and/or via phone order, unless otherwise indicated. Bonus Rewards issued are based upon price actually paid by Member, as advertised price can be reduced by any applicable coupon or discount. Bonus Rewards for these offers, along with any other rewards a Member may have earned during the same period, will be issued in the next statement cycle in the form of a MaxPerks Reward Card redeemable toward future purchases at OfficeMax®. Reward Cards expire 90 days from date of issuance, except in Florida where they expire one (1) year from date of issuance