Ingersoll Rand BL2022 Lithium-Ion 20V 5.0 Amp Battery High Capacity 20V 5.0Ah battery delivers longer run time to get more work done on a single charge Intelligent Battery Management System protects against over loading, over charging and over discharging for longer tool and battery life BL2022 5.0Ah battery is compatible with all IQV20 series power tools allowing you to swap batteries and tools to get the job done right every time Performance: The BL2022 Lithium-Ion 20V 5.0amp battery delivers 66% longer run time than its predecessor (Thats over 800 lug nuts when used with the IR W7150 cordless impact wrench Durability: The intelligent Battery Management System allows the battery to communicate with the tool and charger to offer triple battery protection, prevent over loading over charging and over discharging for longer tool and battery life Versatility: The BL2022 5.0Ah battery is compatible with all IQV20 series power tools allowing you to swap batteries and tools to get the job done right every time Battery Fuel Gauge - 4 light positions Quick charging feature in one hour or less