Adorama offers the Panasonic eneloop AAA Rechargeable Batteries 8-Pack, model no. BK-4MCCA8BAA, for $17.99. Redeem this $5 mail-in rebate to cut it to $12.99 with free shipping. That's $3 under our mention from last week and tied as the lowest price we've seen. (It's also a current low by $5.) Deal ends December 19.