Home Depot has Milwaukee M12 12-Volt Lithium-Ion 4.0 Ah / 2.0 Ah Battery Packs & Charger Starter Kit on sale for $79. Shipping is Free.
AB Promise via Amazon also has Milwaukee M12 12-Volt Lithium-Ion 4.0 Ah / 2.0 Ah Battery Packs & Charger Starter Kit on sale for $79. Shipping is Free.