Newegg offers the Panasonic eneloop AAA Rechargeable Batteries 8-Pack, model no. BK-4MCCA8BAA, for $18.99. Coupon code "EMCAPAP57" cuts the price to $15.49. With free shipping, that's tied with our mention from January and the lowest total price we could find by $3. Panasonic claims that these batteries can be recharged up to 2,100 times.