{"product_id":"hp-envy-x360-13-bf0000ci-replacement-battery-77v-8200mah-li-polymer","title":"HP ENVY X360 13-BF0000CI Replacement Battery 7.7V 8200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP ENVY x360 13-BF Series — 7.7V Li-Polymer Replacement Battery (HSTNN-OB2Y)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.7V 8200mAh (63.14Wh) Li-Polymer replacement battery for the HP ENVY x360 13-bf convertible laptop line. It slots into the 13-bf0000ci, 13-bf0000ne, 13-bf0000ni, 13-bf0000nia, and over 189 additional bf-series variants. Cross-reference OEM part numbers HSTNN-OB2Y, M89926-1D1, M89926-AC1, M90073-005, TPN-IB0O, or WF04XL before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e13-bf series platform fit:\u003c\/strong\u003e\n    All 13-bf variants share the same 7.7V battery rail, physical connector pinout, and BMS handshake protocol. The same cell covers the full sub-series because HP did not change the battery spec across these board revisions.\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-bf unit under combined CPU and display load. The BMS held charge through a full discharge cycle, transitioned to hibernate cutoff cleanly, and accepted a full charge without tripping the over-voltage protection on the way back up.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration after install:\u003c\/strong\u003e\n    After fitting this cell, discharge the laptop fully until it hibernates, then charge it to 100% without interruption. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity and clears the inaccurate health warning that appears immediately 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\"\u003eWhy the ENVY x360 13-bf shuts down at 20–30% after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC in the 13-bf uses stored discharge curve data from the old cell to predict remaining capacity. When a new cell goes in, that data no longer matches the actual chemistry, so the IC miscalculates the voltage cliff. Under combined CPU boost and display load, the system sees a voltage drop it interprets as empty and forces an immediate shutdown — even though the cell still has real capacity left. Running two to three full discharge-to-hibernate and charge-to-100% cycles lets the fuel gauge IC rebuild its model against the new cell. After those cycles, the gauge tracks accurately and the early shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery health as poor immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads health data from the battery's EEPROM, which is pre-populated at the factory with rated cycle count and Wh values. On a brand-new cell, the BIOS compares that EEPROM data against its stored wear baseline and flags a mismatch as poor health. This is a read-order issue, not a fault with the cell. Run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. On the next boot, the BIOS battery learn cycle completes and the health status clears to normal.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409520885850,"sku":"BWCS-HWF360NB-1","price":100.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409520918618,"sku":"BWCS-HWF360NB-2","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409520951386,"sku":"BWCS-HWF360NB-3","price":133.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HWF360NB-1.webp?v=1779579940","url":"https:\/\/batteryweb.com\/products\/hp-envy-x360-13-bf0000ci-replacement-battery-77v-8200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}