Right now at Amazon, you can get this four-pack Amazon Basics rechargeable AA batteries for $5.83. This is the lowest they have ever been, according to CamelCamelCamel. You save $5.68 on the list price.
This four-count pack of rechargeable batteries is delivered and ready to use, and can be charged anytime! They maintain 70% capacity for six months and 50% capacity for 12 months. The charger is not included.
Shipping is free with orders over $25, and 1 or 2-day shipping is also free for Amazon Prime members with many items, but it may depend on your location. This deal could change in price or sell out at any time!