Impact of stellar parameters on the determination of Li abundance. The y-axis in both plots is the difference in Li abundance derived from spectroscopic T_eff and log ɡ and from photometric T_photo,_eff and trigonometric log ɡ. Top plot: difference of Li abundance as a function of the difference in T_eff between spectroscopy and photometry. Bottom plot: difference of Li abundance as a function of the difference in T_eff between spectroscopy and trigonometric log ɡ.