Motorola PMNN4490 Lithium Ion Battery 

The Motorola PMNN4490A IMPRES LIon TIA4950 Low Voltage 2900mAh Battery for Motorola XPR3300e & XPR3500e Series Two Way Radios.  Motorola PMNN4490 batteries are covered by a two year warranty when used with Motorola original charging trays.  Note, the letter at the end of the part number indicates when the battery was made.  PMNN4490A would be first generation.  Motorola PMNN4490C indicates 3rd generation product.  Broadwaytwoway.com always sells the most current version of the product available.