Compatible models:500/510/530/535/540/550/560/570/580/610/620/630/650/700/770/780/800/870/880/900 series and more models.Material properties:High density nickel hydrogen battery cells (NiMH), leak proof casing, high temperature resistant and flame-retardant material, supporting operation in environments ranging from -20 ° C to 60 ° C.Functional advantages:Long lasting battery life: 7000mAh capacity provides up to 2 hours of continuous cleaning, covering a large area of 150 square meters.Intelligent adaptation: The built-in chip automatically identifies the model and optimizes charging efficiency.Safety protection: Triple protection of overcharge/overdischarge/short circuit, certified by UL, CE, RoHS. 7000mAh High Capacity Battery, compatible with 500/600/700/800/900 series, extends runtime by 50% ​Smart Overcharge Protection, supports auto-docking for 620/650/770/780/580 models ​14.4V Stable Voltage Output, suitable for hardwood, tiles, carpets, and more NiMH Battery Technology, no memory effect, up to 1000 recharge cycles UL/CE Certified, explosion-proof design, compatible with 500/600/700/800/900 models ASIN B0F9LL71WL Brand ASDFT Model Name grfwedqw Unit Count 1.0 Count Manufacturer grfwedqw Model Number grfwedqw BuiltIn Media Battery Battery Weight 1 Grams Item Dimensions 0.39 x 0.39 x 0.39 inches Battery Cell Type Alkaline