Context :

Aims : We report the detection of an unusually high lithium content in HD 232 862 , a field giant classified as a G8II star , and hosting a magnetic field .

Methods : With the spectropolarimeters ESPaDOnS at CFHT and NARVAL at TBL , we have collected high resolution and high signal-to-noise spectra of three giants : HD 232 862 , KU Peg and HD 21 018 .
From spectral synthesis we have inferred stellar parameters and measured lithium abundances that we have compared to predictions from evolutionary models . We have also analysed Stokes V signatures , looking for a magnetic field on these giants .

Results : HD 232 862 , presents a very high abundance of lithium ( A _ { Li } = 2.45 \pm 0.25 dex ) , far in excess of the theoretically value expected at this spectral type and for this luminosity class ( i.e , G8II ) .
The evolutionary stage of HD 232 862 has been precised , and it suggests a mass in the lower part of the [ 1.0 M _ { \odot } , 3.5 M _ { \odot } ] mass interval , likely 1.5 to 2.0 M _ { \odot } , at the bottom of the Red Giant Branch .
Besides , a time variable Stokes V signature has been detected in the data of HD 232 862 and KU Peg , pointing to the presence of a magnetic field at the surface of these two rapidly rotating active stars .

Conclusions :