Amazon has a 16-pack of AmazonBasics AA NiMH 2000mAh Precharged Rechargeable Batteries for $27 - 20% off coupon (check "Save an extra" box, eligible on first S&S order for this product) = $22 with free shipping on $25+ or with Prime.

Note: Some accounts can get an additional 10% off AmazonBasics items with code WELCOME10 (one use per customer, YMMV).

We recently posted the 12-pack of AmazonBasics AAA NiMH Rechargeable Batteries for $11.