OverviewProduct Description BLACK+DECKER 18 V battery range is lithium-ion which gives fade-free power and virtually no power discharge over time providing maximum productivity and reduced down-time. Within the range there are three types of batteries - 1.5 Ah, 2.0 Ah and 4.0 Ah. Amp Hour (Ah) indicates battery capacity, meaning how much energy can be stored in the battery. The BLACK+DECKER 18 V 1.5 Ah battery is ideal for day-to-day DIY tasks such as drilling and driving or cutting light duty cutting tasks. The BLACK+DECKER 18 V 2.0 Ah battery recommended for heavier duty DIY tasks or when the tool will be used for long periods between charges. The BLACK+DECKER 18 V 4.0 Ah battery recommended for heavy duty cutting and grinding. Box Contains 1 x Black & Decker BL2018 18v Battery 2.0Ah