Get these rechargeable batteries and forget about constant trips to the store or spending more on disposable ones.

A 20-pack of Energizer Alkaline AA or AAA batteries is on sale at Amazon for just $11.98, down from the standard price of $14.98. That's a 20% discount.

A 28-pack of Duracell Coppertop AA batteries is on sale at Amazon for $17.74, down from the standard price of $21.75. That's an 18% discount.

Users are generally satisfied with both Duracell and Amazon Basics batteries. Duracell tends to perform better, but Basics offers more value for money.