Li-ion Media Player Battery for Sony, 3.7V, 980mAh, Compatible Models: Atrac AD, NW-HD5, NW-HD5 (20GB), NW-HD5 Silver, NW-HD5B

Li-ion Media Player Battery for Sony, 3.7V, 980mAh, Compatible Models: Atrac AD, NW-HD5, NW-HD5 (20GB), NW-HD5 Silver, NW-HD5B

AliExpress