Lightweight and shock-absorbing, the Li-ion battery range delivers 430% more working capacity during it's lifetime compared to Ni-Cad and is 40% Lighter than Ni-MH. A Makita Li-ion battery has minimal depletion of power during use or in storage over it's lifetime. This battery kit includes two Makita BL1830 18v 3.0ah batteries which are compatible with all tools from the 18v LXT cordless range, along with a dual port DC18RD battery charger. The DC18RD is a two port fast charger which is able to charge two Makita slide style Li-ion (or Ni-MH with an adaptor) batteries at the same time, in the same speed that the DC18RC takes to charge one battery. It can also be used for charging USB device from the USB port on front of unit. Important These batteries will NOT fit the following models: • BSS501,BCS550,BPB180,BJV180,BGA452,BGD800,BGD801,BJN161,BJS161,BPJ180,BJV180,BGA452 Specifications • Battery Voltage: 18 v • Battery Ah: 3.0 Ah • Battery Type: Li-ion • Battery ID: BL1830 • DC18RD Charg