Batterytec&reg; Laptop Battery for ASUS X453 X553MA, 0B200-00840000 B21N1329. [7.2V 4000mAh, 1 Year Warranty] Battery Type: Li-ion, Cells: 2-cell,Capacity: 4000mAh; Voltage: 7.2V 100% New Manufacturer. To 500 charging cycles during the lifetime of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 12 months Warranty without problems. Class A cells provide fast loads and low power consumption, chip protection offers both security and stability.