Sears offers the Craftsman 19.2-Volt C3 Replacement Battery Pack, model no. 11375, for $29.99. Plus, Shop Your Way Max members qualify for free shipping. (Not a member? It's free to sign up for a 90-day trial; otherwise, shipping adds $6.99. In-store pickup is also available.) That's tied with our October mention and the lowest price we could find by $33. It's compatible with all past and current C3 19.2-volt Craftsman products.