AmazonBasics AA NiMH Precharged Rechargeable Batteries (16-Pack) for $23.50. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order for free shipping. Here is a screenshot for your reference. These are pre-charged so that they can be used immediately. On a per unit basis, this works out to be just $1.47 each whereas it normally averages out to be about $2.83 each. As such, it is almost 50% less than its normal price.