This 4Ah replacement battery is compatible with 20V MAX cordless power tools and chargers. Built with premium lithium-ion cells, it delivers longer runtime, stable performance, and reliable power for daily and heavy-duty tasks. The integrated protection system helps prevent overcharge, overheating, and short circuits for safer use. Designed for easy installation with a secure fit, the battery also features an LED indicator to monitor remaining power. Package includes 2 replacement batteries.