ATC LLC via Amazon offers the Masione 19.2-volt 3,000mAh Ni-CD Replacement Drill Battery for Craftsman DieHard, model no. 130279005, for $28.99. Coupon code "SUK5U24I" cuts it to $23.99. Plus, Prime members receive free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.64.) That's the lowest total price we could find by $6.

Note: Check product page for compatibility listing.