La Crosse Technology BC-700 Alpha Power Battery Charger for $22.99.  Here is a screenshot for your reference.  Shipping is free on orders over $25.  If needed, use this Filler Tool to pad the order for free shipping.  It has 4 modes: charge, discharge, refresh, and test and charges both AA & AAA rechargeable batteries simultaneously.  Most places have it for about $29.
Originally posted and expired earlier, this deal is now availablie again at this time.