{"product_id":"sony-nwz-w262-replacement-battery-37v-150mah-li-polymer","title":"Sony NWZ-W262 Walkman Replacement Battery 3.7V 150mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony NWZ-W262 — 3.7V Li-Polymer Replacement Battery (1ICP5\/14\/26 1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 150mAh Li-Polymer replacement battery for the Sony NWZ-W262 Walkman Sports MP3 player. It matches the original cell format at 26.64 x 12.55 x 6.05mm and slots into the same battery bay. Voltage and capacity are matched to the OEM spec so the player's charge indicator and protection circuit behave normally.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNWZ-W262 fit:\u003c\/strong\u003e\n    The W262 uses a compact Li-Polymer pouch cell on a dedicated battery board with a single-cell BMS. Voltage must sit at 3.7V nominal — any deviation and the protection IC flags an error before the player finishes booting.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the W262 platform and confirmed the BMS accepted the cell without triggering low-voltage lockout or overcharge cutoff during a standard USB charge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for the NWZ-W262:\u003c\/strong\u003e\n    If the replacement cell arrives in a low state, connect the player to USB and leave it charging for a full cycle before powering on. The W262's protection circuit may hold the device in a locked state until the cell reaches the minimum threshold voltage to trigger normal charge current.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePlayback cutting out before the battery indicator shows empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eAt the tail end of a discharge cycle, cell voltage drops below the level the audio amplifier needs to drive output cleanly. The W262's amplifier stage requires a stable voltage rail — when the cell sags past roughly 3.2V under load, the processor shuts down playback before the indicator has updated. This is a normal BMS cutoff, not a fault. A full charge cycle should restore normal behaviour; if dropout keeps happening earlier in the charge cycle, the cell is degraded and needs replacement.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically after fitting the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe NWZ-W262 estimates charge state by mapping cell voltage against a stored discharge curve calibrated to the original cell. A new cell with a slightly different open-circuit voltage at rest will confuse that mapping until the device recalibrates. Run two full charge-to-cutoff cycles without interrupting playback. After both cycles the voltage-threshold table resets and the percentage readout stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381334736986,"sku":"BWCS-SNW262SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381334769754,"sku":"BWCS-SNW262SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381334802522,"sku":"BWCS-SNW262SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SNW262SL-1.webp?v=1778900029","url":"https:\/\/batteryweb.com\/products\/sony-nwz-w262-replacement-battery-37v-150mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}