Easy to Use and Compatible: The lithium battery chainsaw sharpening kit fits most chainsaw blades and helps you easily maintain your oil chain. It is suitable for novices and professionals alike, allowing you to sharpen even blunt chains within minutes. Cordless and Rechargeable Design: This sharpener is crafted with quality workmanship. Charging time is 4–5 hours and the working time is 40–60 minutes, making it easy to use without a power cord. Stable and Precise Performance: Built with professional manufacturing and accuracy, it delivers stable sharpening performance. In addition to chain sharpening, it is suitable for tasks such as wood and stone cutting, engraving, drilling, sanding, polishing, bore holes and curving. Efficiency and Versatility: The cordless sharpener operates at speeds of 5000–18000 rpm/min. This universal tool is suitable for a variety of situations, including outdoor, garden, and household use. Specifications and Practical Details: Battery: lithium; Charging time: 4–5 hours; Run time: 40–60 minutes; Speed: 5000–18000 rpm/min. Use Scenarios: On outdoor job sites: perform quick chain maintenance and sharpening to reduce downtime. In a home workshop: keep chains ready for precise cutting and cleaner results. In the garden or yard: convenient tool for regular maintenance on multiple chainsaw blades.