14.8V, 4400mAh, Li-ion Battery fits Asus, P31, P31f, 65.12WhBattery Fits Models: P31, P31f, P31j, P31jc, P31jg, P31s, P31sd, P41, P41f, P41j, P41jc, P41jg, P41s, P41sv, U31, U31e, U31f, U31j, U31jc, U31jf, U31jg, U31s, U31sd, U41, U41e, U41f, U41j, U41jc, U41jf, U41jg, U41s, U41sd, U41sv, X35f, X35j, X35jg, X35s, X35sd Battery Part Numbers: 07g016gq1875m, 07g016h71875m, A32 u31, A42 u31 Although a generic version of the battery, the battery we supply is designed and built to be as robust and as good quality as