Hi Dmitrii. Thank you for your review. We would like to assure you that the Greenworks 24V Products, battery and chargers included offer a 3-year Manufacturer's Warranty from the original date of purchase. Should you ever require any warranty or troubleshooting assistance during that time, simple contact us directly. You can reach us via chat, or give us a call at our toll-free helpline: 1-888-90-WORKS (1-888-909-6757) to speak with a live agent. We hope this information has been helpful!

Hello Markcaver. Thank you for your feedback. Higher-voltage rotary hammers are engineered for greater impact energy and durability, which often makes them heavier than some lower-voltage models. This unit weighs -5.48lbs without the battery included. When drilling into dense materials like stone, the tool prioritizes torque and impact force over rotational speed, which can feel slower but delivers the power needed for such demanding applications. Battery life can also be affected by the hardness and density of the material, as drilling into stone requires significantly more energy draw than softer substrates. We appreciate you sharing your experience and will keep your input in mind as we continue refining our designs. If you ever have specific questions or concerns about our products, contact Greenworks via Live chat on our website (www.greenworkstools.com), call us at 1-888-909-6757 (1-888-90WORKS) or refer to the FAQ ask section of the tool or ask us a question, anytime.