{"product_id":"quanta-sw1-replacement-battery-111v-6600mah-li-ion","title":"Asus VivoBook SW1 11.1V Replacement Battery 90-NFY6B1000Z","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eQuanta SW1 \/ TW3 \/ TW5 — 11.1V Li-ion Replacement Battery (90-NFY6B1000Z)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 6600mAh (73.26Wh) lithium-ion battery for the Asus VivoBook SW1, TW3, and TW5 laptops. It replaces a degraded or failed original cell to restore portable computing capability. Install it when the existing battery no longer holds a charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSW1, TW3, and TW5 compatibility:\u003c\/strong\u003e\n    These three models share the same 11.1V three-cell battery rail, connector pinout, and BMS handshake protocol — which is why a single cell covers all three. The EEPROM on this replacement carries the correct identification data so the BIOS recognises it 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 VivoBook-platform hardware. The BMS held charge termination correctly at full voltage, and the protection circuit tripped as expected under over-discharge conditions without requiring a manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration tip:\u003c\/strong\u003e\n    After fitting this battery, run the laptop down to hibernate-cutoff under normal load, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap — skipping this step leaves the fuel gauge IC calibrated to the old cell's degraded profile.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe VivoBook BIOS stores cycle count and health data in EEPROM tied to the original battery. When a new cell is installed, the BIOS reads stale data and flags the replacement as degraded — even though the cell is fresh. This is a data mismatch, not a hardware fault. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100% and the BIOS recalculates health against the new cell's actual voltage curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% shown on the OS fuel gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's degraded discharge curve. The gauge shows 20–30% remaining, but the new cell's actual voltage under combined CPU and display load drops below the BMS cutoff threshold before the gauge catches up. It is a calibration lag, not a defective battery. Force a full discharge to hibernate-cutoff twice in a row — after the second cycle the gauge IC resets its reference points and the shutdown behaviour stops.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410816598106,"sku":"BWCS-AUF3HB-1","price":118.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410816630874,"sku":"BWCS-AUF3HB-2","price":135.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410816663642,"sku":"BWCS-AUF3HB-3","price":148.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUF3HB-1.webp?v=1779581181","url":"https:\/\/batteryweb.com\/products\/quanta-sw1-replacement-battery-111v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}