DealYard via Rakuten offers the Duracell AAA Rechargeable Stay Charged Battery 6-Pack, model no. DX24B6TB, for $7.95 with free shipping. That's $1 under our May mention and the lowest total price we could find by $6. These pre-charged 800mAh AAA batteries purportedly retain power for up to 365 days while not in use. Deal ends August 18.