TI-84 Plus CE Battery Replacement Fit Texas Instruments TI-84 Plus CE C Graphing Calculator, TI NSpire CX/CX II/CX CAS, P11P35-11-N01 & 3.7L12005SPA Battery, Fix Dead Power Issue & Error Validating OS is a Calculator Accessories option for everyday use, business supply needs, resale shelves, or household stocking. Review product size, pack count, and shipping details before checkout.