New 600mAh Replacement Battery for Microsoft Zune 4GB 8GB 16GB Replaces the following battery part numbers: HSA-00001 HVA-00001 HSA-00003 HVA-00003 HSA-00005 HVA-00005 Replaces the following part numbers: 1124 1125 For best results for li-on batteries, please FULLY CHARGE the item overnight, and then on its first use, FULLY discharge the item. (Use the item until it fully depletes its battery after its first charge) DISLCAIMER: The names for Microsoft Zune, etc. are used for the sole purpose of describing the compatibilty of our items and identifying models they work with. These names are the copyrights of their respective owners. MCMConcepts does not intend to infer any connection / ownership / affiliation between MCMConcepts and any other company.