Delivers up to 3X more run-time than standard 3A lithium-ion batteries, Fit for original Lithium Cordless Power Tools 48-11-1840 48-11-1850,Provides optimized performance and overload protection
Built in high quality battery cells, Charging at any time will have no effect on the battery,the battery features overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage
Electronics control charge & discharge analytics to optimize performance and extend life,increase the run-time and durability of your original cordless tools
Any questions(problem), 24-hour friendly customer service