Replaces OEM # 4X50M08810, 61, 01AV422, 01AV423, 01AV424, 01AV452, 01AV490, SB10K97579, SB10K97580, SB10K97581, SB10K97597 Fits: LENOVO THINKPAD T470, THINKPAD T480, THINKPAD T570, THINKPAD T580, THINKPAD A475, THINKPAD A485, THINKPAD P51s, THINKPAD P52s, THINKPAD 25 Specs: 11.4V, 24WHR, 2110MAH, 3 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each product has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety