Amazon.com: Duracell – Rechargeable AA Batteries – long lasting, all-purpose Double A battery for household and business – 4 count : Electronics $7.15
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Amazon has rechargeable Duracell batteries 4 pack AA for 11.92 with 40% off first subscribe and save order making them 7.15. you will save another 5% or 15% depending on your subscribe and save discount.