Built-in protection circuit (PCM) prevents over charging/discharging.
USBC Rechargeable Gumstick Battery NC-6WM NH-14WM NH-10WM For SONY WALKMAN
Sony Walkman NWZ A/S MP3 Player Battery - 3.7V 900mAh LIS1374HNPA 383450
Sony Walkman NWZ A/E/S XB650 XB950 MP3 Battery - 750mAh LIS1427 LIS1374 ZU10192
Sony Walkman SRS-BTV5 NWZ A/E/B MP3 Player Battery - 3.7V 380mAh LIS1425 274237
Sony Walkman NWZ E435 E473 E475 MP3 Battery - 420mAh LIS1493HNPPC 1-756-819-11
Sony Walkman NWZ-A15/A17 NWZ-F800 Battery 1000mAh LIS1494 ZU12029-13016 - 383759
