inputs.text: pretty satisfied - bought battery old 40 gig zen xtra got battery read reviews talked size problems compared orginial 411a4z26ea6b battery looked size soon installed play wouldnt power unit cut medium size guitar pick thin didnt seem quite snug enough taped bottom battery fits pretty tight works well cheap import battery many may knock choice found one battery looked official creative labs battery wanted 4 times cost figured id take chances im happy cant see spending battery player seller shipped pretty fast battery 4 5 days