This 4 Ah battery will give the user up to 2X more runtime and has 2X longer life compared to standard lithium-ion batteries. This new battery pack will be 10% more compact and 10% lighter compared to the previous model R840086. Best of all this 4.0 Ah battery is 100% compatible with all RIDGID 18-Volt tools and lithium-ion chargers.
This battery come with my impact wrench, I have a couple batteries already, never used this one.