Model: 3.7L1200SP</br>3.7V 1200mAh</br>Upgraded Model from TI (older model discontinued)</br></br>Product Description</br></br>Model: 3.7L1200SP 3.7V 1200mAh P/N:P11P35-09-N01 1ICP5/43/50 For TI Nspire CX and CX CAS (V1.0) that use battery WITH WIRE and TI 84 Plus Color Edition (uses with Wire edition)</br><br/>http://www.amazon.com/gp/product/B00SLHILQE