【Dyson】 PencilVac Spare Battery & Battery Charging Holder Authentic Product Retail Price: ¥12,100 Part Number: 973969-01 Compatible Models: SV50 This is a set of a detachable spare battery and battery charging holder specifically for the Dyson PencilVac Fluffycones (SV50 FC). The spare battery can be attached and detached with a single touch, extending the operating time by an additional 30 minutes. It also comes with a charging holder that can charge the spare battery. ● Other Notes: Although it is new and unused, please refrain from purchasing if you are sensitive to minor imperfections.