You can score an Energizer Batteries 4-pack for only $0.75 at Walgreens after coupon:
Buy 2 Energizer Max AA Batteries 4-pack: $3.49 (BOGO FREE)
Use two $1.00 off (1) one Energizer Batteries or Flashlight
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= $0.75 each @ Walgreens after coupon when you buy two.