HiKOKI BSL1850C 18v 5.0Ah Lithium-Ion Slide On Battery The Hitachi 18 Volt Compact 5.0Ah high capacity lithium-ion battery pack is able to power every 18v Hitachi cordless tool with the Hitachi Slide On battery connector type. This battery pack is the same size and weight as the BSL1830 3.0Ah battery but delivers up to 2 x longer runtime. Up to 1,500 cycles rechargeable through multiplex protection circuit that prevents overload, overcharge and over-discharge. FEATURES Very compact and light battery for all 18 volt models with slide battery mount The battery is 15% smaller and lighter than its predecessor (19 mm shorter and 100g lighter, weighs only 550 grams). Can be charged with Li-ion SLIDE battery chargers UC18YFSL / UC18YSL3 / UC36YSL Charging time approx. 25 min SPECIFICATION Voltage: 18v Battery Type: Li-ion, Slide On Capacity: 5.0Ah Weight: 0.6kg