Advanced protections: Built in multiple safeguards including overload, short circuit, and overheating protections for secure and efficient charging Wide Compatibility: This chargers is suitable with 18V power tools including BL1840, BL1850, and BL1860 lithium batteries, ensuring versatile use for various construction needs Fast Charging Technology: Features rapid charging capability to quickly recharge batteries, minimizing downtime and enhancing work efficiency LED indicators: Equipped with LED charging indicators to clearly display real time charging progress for easy Compact & Portable Design: portable and compact with shock resistant and waterproof features, ideal for tough working conditions, Manufacturer: Kaeltsyn