{"product_id":"hp-spectre-x360-13-ap0000na-replacement-battery-154v-3850mah-li-polymer","title":"HP Spectre X360 13-AP HSTNN-OB1B Replacement Battery 15.4V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP Spectre X360 13-AP0000NA Series — 15.4V Li-Polymer Replacement Battery (HSTNN-OB1B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15.4V, 3850mAh (59.29Wh) lithium-polymer replacement battery for the HP Spectre X360 13-AP0000 convertible laptop range. It fits the 13-AP0000NA and over 200 regional variants sharing the same battery bay and connector. It replaces OEM part numbers HSTNN-OB1B, SP04XL, L28538-AC1, L28764-005, and TPN-Q203\/Q204.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAP0000 series compatibility:\u003c\/strong\u003e\n    All 13-AP0000 regional variants use the same 15.4V four-cell Li-Polymer pack with a unified connector pinout and BMS handshake protocol. The BIOS reads cell identity via EEPROM — any variant in this series will accept this battery without firmware conflict.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a 13-AP0000 unit under combined CPU and display load. The BMS held voltage above the 12.5V cutoff threshold across full discharge cycles, and the protection circuit responded correctly to charge termination at 16.8V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the Spectre X360:\u003c\/strong\u003e\n    After fitting, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the firmware triggers automatically 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 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HP Spectre X360 BIOS reads health data from the battery's EEPROM, which stores charge cycle counts and rated capacity from the previous cell. After a swap, the new cell's EEPROM data doesn't match what the BIOS logged for the old battery, so it flags degraded health. This is a firmware calibration issue, not a cell defect. Run one full discharge-to-hibernate cycle followed by a full uninterrupted charge. After two to three cycles the fuel gauge IC re-learns the new cell's actual capacity curve and the health warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't yet calibrated against the new cell's discharge curve. The displayed percentage is based on the old cell's voltage-to-capacity map, so the gauge reads 25% while the actual cell voltage has already dropped below the safe cutoff — roughly 13.2V under load for this pack. The system shuts down to protect the cell before the OS can update the reading. Force a complete discharge to the hibernate threshold, then charge to 100% without interruption. Repeat this once more and the gauge IC will lock onto the correct curve for this cell's chemistry.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409701208154,"sku":"BWCS-HSP004NB-1","price":118.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409701240922,"sku":"BWCS-HSP004NB-2","price":135.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409701273690,"sku":"BWCS-HSP004NB-3","price":148.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HSP004NB-1.webp?v=1779580473","url":"https:\/\/batteryweb.com\/products\/hp-spectre-x360-13-ap0000na-replacement-battery-154v-3850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}