https://www.ebay.com/itm/176298390500?toolid=10001&customid=87e64d28564d11ef88b9f682979f005c0INT Greenworks 24V 4.0Ah Powerall Lithium-Ion Power Tool Battery (2949802AZ) on sale for $53.99 - 20% when you apply coupon code SUMMERHOME20 = $43.19. Shipping is free.