{"product_id":"hp-chromebook-x360-14-g1-replacement-battery-1155v-5150mah-li-polymer","title":"HP Chromebook X360 14 G1 SY03XL Replacement Battery 11.55V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP Chromebook X360 14 G1 — 11.55V Li-Polymer Replacement Battery (SY03XL)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.55V, 5150mAh (59.48Wh) Li-Polymer cell replaces the OEM SY03XL battery in the HP Chromebook X360 14 G1 and X360 14-DA series convertibles. It fits the 14-DA0011DX, 14-DA0021NR, and the broader 14-DA range that shares the same connector and BMS handshake. Also cross-references HSTNN-DB8X, L29913-221, L29913-2C1, L29959-002, and L29959-005.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX360 14-DA series compatibility:\u003c\/strong\u003e\n    Every 14-DA variant uses the same 3-cell Li-Polymer pack with an identical connector pinout and BMS communication protocol. Voltage rails, cell count, and the SMBus data lines are uniform across this sub-family, so one SKU covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Chromebook X360 14 G1 unit. The BMS handshook on first boot, reported cell chemistry correctly, and the charge controller accepted a full charge cycle without fault flags. No pack rejection errors were logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on ChromeOS:\u003c\/strong\u003e\n    After fitting this battery, run the Chromebook down to auto-hibernate cutoff, then charge uninterrupted to 100%. ChromeOS fuel gauge IC calibrates against the new cell during this first full cycle — skipping it leaves the battery status widget reporting inaccurate percentages for weeks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Chromebook X360 shuts down at 20–30% after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the motherboard stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches the actual voltage-versus-capacity profile of the fresh pack. At around 20–30% indicated charge, the new cell's open-circuit voltage crosses a threshold the IC misidentifies as critically low, triggering an immediate shutdown. Running two or three full discharge-to-hibernate, then charge-to-100% cycles forces the IC to rebuild its discharge model against the new chemistry. After three cycles, shutdown-at-percentage behaviour typically resolves without any firmware changes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS or ChromeOS reporting battery health as \"Unknown\" or \"Poor\" after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SY03XL pack carries EEPROM data — manufacturer ID, cycle count, rated Wh — that ChromeOS reads via SMBus and compares against a known-good profile. A new cell resets those registers, and the OS interprets the mismatch as a degraded or unrecognised battery. This is a firmware read issue, not a fault with the cell itself. Run the full discharge-then-charge learn cycle once; the health indicator resets to normal after ChromeOS has logged at least one complete charge event from the new pack's EEPROM baseline.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409651204186,"sku":"BWCS-HPX800NB-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409651236954,"sku":"BWCS-HPX800NB-2","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409651269722,"sku":"BWCS-HPX800NB-3","price":123.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPX800NB-1.webp?v=1779580296","url":"https:\/\/batteryweb.com\/products\/hp-chromebook-x360-14-g1-replacement-battery-1155v-5150mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}