The Makita 18V Li-ion Battery provides the ultimate power to weight ratio thanks to the lightweight and shock-absorbing design. The Li-ion range delivers 430% more working capacity during the lifetime of the battery compared to NiCad and is 40% lighter than NiMH. The Li-ion has minimal depletion of power during use or in storage over its lifetime. Features: Foam cell technology. Slide-on battery firm holding with multi contacts and shock absorbing pack. It will not puncture and remains cool even in heavy use. Makita have a comprehensive range of professional Lithium-ion tools available on the market so whatever your trade you will be confident that you have made the best choice.The Makita BL1850B 18V 5.0Ah Li-Ion Battery provides the ultimate power to weight ratio thanks to the lightweight and shock-absorbing design. The Li-ion range delivers 430% more working capacity during the lifetime of the battery compared to NiCad and is 40% lighter than NiMH.The Li-ion has minimal depletion of power during use or in storage over its lifetime.PTDMAKBL1850