Battery for iRobot Roomba 400 / 4000 series 3300mAh

Compatible battery for a new boost of life in your iRobot / Ambrogio / Sichler cleaning device High-quality spare part with optimum price-performance ratio Reliable functionality & full compatibility with your robot vacuum cleaner Manufactured with precision for the perfect fit in your device CE & RoHs certification - fulfils all guidelines of operational safety High-quality NiMH cells for optimal device performance Nickel metal hydride batteries are similar to nickel-cadmium cells but have a higher energy density at the same voltage (approx. twice as high). Thanks to their low internal resistance, NiMH batteries can be used in devices with a high power consumption but at a low cost e.g. small LED lights, toys, audio & photography equipment, phones, electric toothbrushes, shavers, power tools and remote-controlled electric models.