{"product_id":"hp-spectre-x360-14t-replacement-battery-77v-8150mah-li-polymer","title":"HP Spectre X360 14T Replacement Battery WS04XL 7.7V 8150mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP Spectre X360 14T — 7.7V Li-Polymer Replacement Battery (WS04XL)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.7V 8150mAh (62.76Wh) Li-Polymer battery for the HP Spectre X360 14T convertible ultrabook. It fits the 14T-EA000 series and specific 14-ea0000 variants including the ea0007na and ea0002ni. When the original WS04XL cell degrades and the laptop stops holding a charge, this replacement restores cordless operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpectre X360 14T series compatibility:\u003c\/strong\u003e\n    The 14T and 14-ea0000 models share the same 7.7V two-cell Li-Polymer rail, flat form factor connector, and BMS handshake protocol — which is why OEM part numbers WS04XL, WS04066XL, and HSTNN-DB9Z all cross-reference to the same physical cell and PCB configuration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Spectre X360 14T unit and confirmed the BMS initialised correctly, the charge controller accepted the cell without fault codes, and charge progression through all four stages completed without interruption.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the Spectre X360 14T:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in HP Support Assistant after every cell swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after fitting a new WS04XL cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HP Spectre X360 14T reads battery health from EEPROM data written by the original cell. When a replacement cell is installed, the BIOS has no matching EEPROM record and flags the battery as degraded or unknown — even when the cell is brand new. This is a firmware behaviour, not a battery fault. Running a full discharge-to-hibernate followed by a complete uninterrupted charge gives the BIOS controller enough cycle data to re-evaluate the cell. After one or two calibration cycles, the health indicator in HP Support Assistant returns to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSpectre X360 14T shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge reads 20–30% but the cell voltage has already dropped below the safe cutoff threshold under combined CPU and display load — so the system shuts down to protect the hardware. The old cell's discharge profile is still stored in the gauge IC and does not match the new cell. Perform a full discharge to hibernate-cutoff, then charge to 100% without interruption — after two complete cycles the gauge re-maps the curve and shutdowns stop occurring above 4.2V per cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409610276954,"sku":"BWCS-HPS364NB-1","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409610309722,"sku":"BWCS-HPS364NB-2","price":125.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409610342490,"sku":"BWCS-HPS364NB-3","price":138.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPS364NB-1.webp?v=1779580172","url":"https:\/\/batteryweb.com\/products\/hp-spectre-x360-14t-replacement-battery-77v-8150mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}