{"product_id":"asus-ux360ca-replacement-battery-1155v-4550mah-li-polymer","title":"Asus UX360CA Replacement Battery C31N1528 11.55V 4550mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus ZenBook Flip UX360CA — 11.55V Li-Polymer Replacement Battery (C31N1528)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.55V, 4550mAh (52.55Wh) Li-Polymer battery for the Asus UX360CA 2-in-1 convertible ultrabook. It fits the ZenBook Flip UX360CA line, including the FC060T, C4215T, and C4050T variants among others. OEM part numbers C31N1528 and 0B200-00730200 both cross-reference to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUX360CA series fit:\u003c\/strong\u003e\n    All UX360CA models share the same 11.55V three-cell Li-Polymer architecture, the same flat-pack form factor at 309.00 × 135.20 × 4.50mm, and the same BMS handshake protocol. One cell covers the full variant list without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the UX360CA platform. The BMS initialised correctly on first power-on, the charge controller accepted the cell without fault codes, and capacity reporting stabilised within two full cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle recalibration on the UX360CA:\u003c\/strong\u003e\n    After fitting, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the firmware throws 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 UX360CA BIOS flags a new cell as poor health immediately after swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe UX360CA stores historical charge and discharge data in EEPROM on the original battery's BMS. When a new cell is installed, the BIOS reads no history and defaults to a poor-health or unknown status. This is a firmware read problem, not a fault with the replacement cell. Running the BIOS battery learn cycle — one full discharge to hibernate, one uninterrupted charge to 100% — populates the EEPROM registers and clears the warning. After two full cycles, the health indicator should read correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUX360CA 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 OS fuel gauge is reading a predicted state-of-charge based on the old cell's profile, so it displays 20–30% while the actual cell voltage has already hit the low-voltage cutoff. It is not a faulty cell — it is a mismatch between stored calibration data and the new cell's characteristics. Run two full discharge-to-hibernate and charge-to-100% cycles; after that, the fuel gauge re-maps its curve and the cutoff aligns with the displayed percentage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409621090394,"sku":"BWCS-AUX528NB-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409621123162,"sku":"BWCS-AUX528NB-2","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409621155930,"sku":"BWCS-AUX528NB-3","price":123.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUX528NB-1.webp?v=1779580214","url":"https:\/\/batteryweb.com\/products\/asus-ux360ca-replacement-battery-1155v-4550mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}