{"product_id":"ahtec-netbook-lug-n011-replacement-battery-111v-4400mah-li-ion","title":"Ahtec Netbook LUG N011 Compatible Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAhtec Netbook LUG N011 — 11.1V Li-ion Replacement Battery (BTY-S11)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Ahtec Netbook LUG N011. It replaces OEM part number BTY-S11 and fits directly into the LUG N011 chassis without modification. If your original cell no longer holds a charge or your BIOS flags poor battery health, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLUG N011 platform fit:\u003c\/strong\u003e\n    The LUG N011 uses a shared battery bay connector and BMS handshake tied to the BTY-S11 spec. This cell matches the 11.1V rail and physical connector, so the laptop's charge controller recognises it without driver changes or BIOS workarounds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the LUG N011 platform and confirmed the BMS accepted the new cell, initiated charge without fault codes, and held voltage steady under sustained CPU and display load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration after install:\u003c\/strong\u003e\n    After fitting, run the battery down until the laptop hibernates on low-battery cutoff, then charge uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell and clears the inaccurate health warning that appears in the BIOS after a cell swap.\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 the BTY-S11\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe LUG N011 BIOS reads battery health from EEPROM data that is still tied to the old, degraded cell. When a new cell is fitted, the BIOS hasn't recalculated capacity against actual charge cycles, so it continues to report the old health status. Running one full discharge-to-hibernate followed by a complete uninterrupted charge resets the battery learn cycle. After two to three full cycles, the BIOS typically updates the health status to reflect the new cell's actual capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLUG N011 shutting down suddenly with 20–30% charge still showing\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't yet calibrated against the new cell's voltage curve. The gauge underestimates how close the cell is to its lower voltage cutoff, so the laptop cuts power before the display hits 0%. The fix is a calibration cycle: let the laptop discharge fully under normal use until it hibernates, then charge straight to 100% without interruption. After two full cycles, the fuel gauge aligns with the actual cell voltage, and the shutdowns stop. Target a resting voltage of 12.6V at full charge to confirm the cell is performing correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410826231898,"sku":"BWCS-MSU100HB-1","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410826264666,"sku":"BWCS-MSU100HB-2","price":106.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410826297434,"sku":"BWCS-MSU100HB-3","price":116.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MSU100HB-1.webp?v=1779581287","url":"https:\/\/batteryweb.com\/products\/ahtec-netbook-lug-n011-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}