PopPhoto have rounded-up the latest AA batteries and tested them from a green angle, emphasizing rechargeable batteries and recycling.
“With plenty of time to plan ahead, we shopped around for the best prices, dropping two Franklins at Wal-Mart. $200 bought seven sets of rechargeable and seven sets of single-use batteries—84 batteries in total. With individual single-use batteries ranging in price from 50-cents to upwards of four dollars (purchased in packs of four or eight), our objective was simple: Calculate cost per shot for each battery.”
Website: PopPhoto - AA Battery Test