【Superior Capacity Upgrade】: Type: lithium-ion; Voltage: 22.2V/21.6V; Capacity: 3500mAh. Szxtdzsw's battery has a difference from others, not only better capacity, but also in performance, providing more motivation, give new life to your vacuum cleaner. 【Excellent Compatibility】:Compatible Deik Vacuum Models MT-1616 MT-1206 ZB-1516，Fit Model For Hoover FD22 Freedom FD22BC 011 FD22BCPET 001 FD22BR 001 FD22BR 011 FD22BRPET 011 FD22CAR011 FD22G 001 FD22G 011 FD22HH 001 FD22L 001 FD22RP 001 FD22RP 011 FD22G FD22L FD22BR FD22BC FD22HH FD22RP. 【Unique Technology】: The design is easy to install and remove; compact and lightweight that will help you avoid fatigue from long hours of work. 【Safety and Stability】: FCC, CE, RoHS certified. No memory effect. Made with high-quality batteries and cells for fast charging, low power consumption and longer life. In addition, built-in smart protection chip offers various protection systems. 【Support service】 You can get 1* 3500mAh battery.24-month product quality service and 24 hours' friendly customer service! Compatible with Deik Vacuum Models MT-1616 MT-1206 ZB-1516