The HiKOKI BSL36B18 Multi Volt Battery 18/36V 8.0/4.0Ah Li-ion. The HiKOKI Multi Volt Battery offers unprecedented power output, similar to mains powered tools when used with a 36V tool*. The battery has a compact, lightweight design and is similar in both size and weight to the existing 18V 5Ah and 6Ah batteries. It also features a 4-stage battery level indicator with a diagnostic function. Compatible with the existing range of Hitachi/Hikoki 18V slide battery tools and the new range of 36V Multi Volt tools. Compatible with existing 18V chargers and the new UC36YSL. Eligible for the extended warranty scheme when registered within 4 weeks of purchase. *Not compatible with previous non-Multi Volt 36V tools. HiKOKI A02 B2056