1Large Capacity: This battery has a capacity of 5.0Ah for more power and longer running time. It doesn't need to be charged frequently, which improves your working efficiency. 2Broad Compatibility: This battery can perfectly replace 18V battery for BL1830B, BL1840B, BL1850B, BL1860B, BL1815, BL1820, BL1825, 194309 1, 194205 3, 194204 5, LXT400 and so on. It is compatible with 18V tools for BC, BD, BH, BJ series and for DC24SC, DC18RA, DC18RC, DC18SD, DC18SE, DC18SF chargers. 3Safe And Reliable: This battery is made of ultra performance batteries that provide 6 protection systems, including over discharge, overheat, over charge, over current, over voltage and short circuit protection. You can use it safely on your tools. 4Smart Indicator Lights: This battery is installed with 4 LED power indicator lights, you can check the remaining battery power in one click, which is convenient for you to charge the battery in time. It makes your work more efficient. 5Excellent ABS Material: The shell of this battery is made of excellent ABS material, which is sturdy and wear resistant, flame retardant and high temperature resistant, very durable.