Townpeak New Replacement Laptop Battery for ASUS F80 F80Cr f80l f80q F80s F81 F81Se F81E F83E F83 F83Cr F83Se F83T F83S F83VD F83VF F83V N80 N81 Pro83 Pro83Q Pro83S Pro86 Pro86S Pro86SE X61 X80 X81 X83Vm X85 X88 Z99 11.1V 5200mAh 58Mh--12 months warranty