The Li-ion range delivers 430% more working capacity during it's lifetime compared to Ni-Cad and is 40% Lighter than Ni-MH. The Li-ion has minimal depletion of power during use or in storage over it's lifetime.The BL1840B includes battery capacity indicator LED's which show you how much power you have left at the touch of a button. Battery capacity indicator LED's show how much juice you have left on demand. Slide on battery - firm holding with multi contacts and shock absorbing pack, will not puncture and remains cool even in heavy use. Unbeatable 36 minute charge time. Same weight as 3.0Ah battery. Works with your current Li-ion Chargers. Longer run time and battery life. All new 4Ah+ tools are compatible with 18V 3Ah and less Li-ion batteries. Charge Time (DC18SD): 90 mins. Charge Time (DC18RA/DC18RC/DC18RD): 36 mins. This item is in the category "Home, Furniture & DIY\DIY Tools & Workshop Equipment\Power Tool & Air Tool Accessories\Power Tool Batteries". The seller is "ta17tra" and is located in this country: GB. This item can be shipped to United Kingdom.