{"product_id":"asus-b3404cv-replacement-battery-1161v-5400mah-li-polymer","title":"Asus Vivobook 14 B3404CV Replacement Battery 11.61V 5400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus Vivobook B3404CV \/ Chromebook CM34 — 11.61V Li-Polymer Replacement Battery (0B200-04010000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.61V, 5400mAh (62.69Wh) Li-Polymer battery replaces the original cell in the Asus Vivobook B3404CV, CM3401FFA, and Chromebook CM34 Flip series. It matches OEM part numbers 0B200-04010000, 0B200-04310000, and C31N2205. The connector, BMS handshake, and physical dimensions are matched to these models exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eB3404CV and CM34 series fitment:\u003c\/strong\u003e\n    These models share the same 11.61V three-cell Li-Polymer architecture, identical connector pinout, and the same BMS communication protocol — which is why one cell covers the full range. Swapping to a mismatched voltage rail will trigger an immediate BIOS rejection and the laptop will refuse to charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge-discharge cycle on the B3404CV platform. The BMS handshake completed without fault codes, charge current stepped down correctly at 80% and 95% thresholds, and the cell held steady voltage through a sustained CPU and display load test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on Asus BIOS:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to hibernate cutoff — do not force-shutdown — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the false \"poor health\" warning that appears after every cell swap on these Vivobook and Chromebook CM34 platforms.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the B3404CV reports poor battery health immediately after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Asus BIOS stores learned capacity and cycle count data from the previous cell in its EEPROM. When a new cell is installed, that stored data no longer matches the actual cell chemistry, so the BIOS flags the battery as degraded. This is not a fault with the replacement cell — it is a calibration mismatch. Running the learn cycle (full discharge to hibernate, then uninterrupted charge to 100%) overwrites the stale EEPROM data. After one or two full cycles, the health indicator returns to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts off at 20–30% shown on the fuel gauge after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet mapped the new cell's voltage-to-capacity curve. Under full CPU and display load, the cell voltage drops faster than the uncalibrated gauge predicts, and the system hits its low-voltage cutoff while the display still shows charge remaining. The fix is calibration — discharge fully to hibernate without interruption, then charge to 100% in one session. After two or three complete cycles, the gauge IC locks onto the correct curve and the early shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409518100570,"sku":"BWCS-AUB340NB-1","price":68.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409518133338,"sku":"BWCS-AUB340NB-2","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409518166106,"sku":"BWCS-AUB340NB-3","price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUB340NB-1.webp?v=1779579852","url":"https:\/\/batteryweb.com\/products\/asus-b3404cv-replacement-battery-1161v-5400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}