Compatible Device Models: TI Nspire CX CAS Graphing TI-Nspire CX CAS SELECT TI-Nspire CX TI-84 CE TI-84 Plus CE TI Nspire CX | Compatible Part Number: P11P35-11-N01 3.7L12005SPA | Battery Specifications:Capacity: 1300mAh, WH: 4.81Wh, Type: Li-ion, Voltage: 3.7V | Battery Dimensions: 52.7 x 42.88 x 4.8mm | 60 Days No Reason for a Full Refund or a Free Replacement.Certificated with ISO9001, RoHS, CE, UN38.3, MSDS