{"product_id":"asus-n550-replacement-battery-15v-4000mah-li-polymer","title":"Asus N550 Compatible Battery C41-N550 15V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus N550 Series — 15V Li-Polymer Replacement Battery (C41-N550)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15V, 4000mAh (60Wh) Li-Polymer replacement battery for the Asus N550 notebook series. It fits the N550, N550J, N550X47JV, N550X47JV-S, and over 150 additional N550 variants. Capacity and voltage match the original C41-N550 specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eN550 series compatibility:\u003c\/strong\u003e\n    These models share the same 15V power rail, C41-N550 connector layout, and four-cell Li-Polymer BMS handshake. Any N550 variant listed accepts this cell without hardware 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 an N550J. The BMS communicated correctly with the EC, charge current tapered normally at the 4.2V-per-cell threshold, and no fault codes triggered during the test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle reset on N550 after swap:\u003c\/strong\u003e\n    After fitting this battery, run the laptop down to hibernate-cutoff under normal load, then charge uninterrupted to 100%. This forces the embedded controller to complete a learn cycle against the new cell and clears the inaccurate health warning the N550 BIOS posts after every cell replacement.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the N550 BIOS reports poor battery health after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe N550 embedded controller reads cycle count and state-of-health data stored in the original cell's EEPROM. When a new cell arrives with a fresh EEPROM, the EC compares those values against its stored baseline and flags a mismatch as degraded health. This is a firmware-side artefact, not a cell fault. One full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the EC rebuild its learned capacity baseline against the new cell and clears the flag.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eN550 shutting down at 20–30% remaining after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the N550 board calibrates its state-of-charge curve against the old cell's discharge profile. With a new cell installed, the IC underestimates remaining capacity and triggers a low-voltage shutdown earlier than expected. The fix is two to three full calibration cycles: discharge to hibernate-cutoff, then charge to 100% without interruption each time. After the second or third cycle the gauge re-maps to the new cell and the premature shutdown stops. Check that the cell voltage at reported 0% reads no lower than 14.4V across the pack terminals — anything lower points to a different fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409784275034,"sku":"BWCS-AUN550NB-1","price":77.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409784307802,"sku":"BWCS-AUN550NB-2","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409784340570,"sku":"BWCS-AUN550NB-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUN550NB-1.webp?v=1779580818","url":"https:\/\/batteryweb.com\/products\/asus-n550-replacement-battery-15v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}