From Hitachi comes their latest products under the new HiKOKI name.The HiKOKI BSL36B18 18v/36v 8.0Ah Multi-Volt High Power 1080w Battery offers over 1000 watts for cordless power in nearly the same compact and lightweight size as HiKOKI standard battery models.The BSL36B18 Multi Volt Battery automatically changes between 36v and 18v making it compatible with all of HiKOKI?s current slide range as well as being able to give 36v when needed.Features:1080w high power outputCompact & LightweightAutomatic voltage change