Our HD 4/11 C Bp Battery is equipped with 2 extremely powerful 36-volt lithium-ion batteries, making it the first battery-operated high-pressure cleaner from Kärcher to work at a professional level. The batteries in our 36-volt battery platform guarantee excellent cleaning performance, long operating times and are compatible with other devices from the same range. The HD 4/11 C Bp is ideal wherever external power sources are not available, as is often the case in municipal tasks, in landscaping or in the work area of caretakers. Another advantage: The highly mobile high-pressure cleaner is suitable for both standing and lying operation. In addition, it convinces with high-quality components such as a brass cylinder head, automatic pressure relief, the EASY! Force high-pressure gun, the EASY! Lock quick-release fasteners and a nifty accessory storage. In the case of light soiling, it is advisable to switch on the eco! Efficiency level to reduce cleaning performance and thus extend the battery life to up to 34 minutes.