This is a genuine lenovo 31wh/4140mah rechargeable li-ion battery (model name/number: , part number configuration 2icp4/59/138), typically used in lenovo ideapad models such as the 120s-14iap, 130s-14igm, and s130-14igm. it operates at a nominal voltage of 7.5v with a limit charge voltage of 8.7v.key specificationscapacity: 4140mah / 31wh (typ. 32wh / 4300mah)voltage: 7.5v (limit charge voltage: 8.7v)cell type: rechargeable lithium-ion polymer (2icp4/59/138)storage temperature: 0°c to 60°c (32°f to 140°f)
main compatible laptop modelslenovo ideapad 120s series: 120s-14, 120s-14iap (including model type 81a5)lenovo ideapad 130s series: 130s-14, 130s-14igmlenovo ideapad s130 series: s130-14, s130-14igm