As one of its daily deals, Sears offers the DieHard Platinum 6-volt / 12-volt Battery Charger and Maintainer for $22.99. Choose in-store pickup to dodge the $6.50 shipping charge. That's $22 off list and tied with our March mention as the lowest price we could find. It features a 3-amp charge, scrolling digital messages, float-mode monitoring, auto voltage detection, and reverse hook-up protection. Deal ends today.