{"product_id":"enz-k36n-replacement-battery-148v-4000mah-li-polymer","title":"Enz K36N Replacement Battery 14.8V 4000mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEnz K36N \/ R34 \/ M15RX Series — 14.8V Li-Polymer Replacement Battery (20160901)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis Enz 14.8V 4000mAh (59.2Wh) Li-Polymer battery replaces part number 20160901 in Asus ROG notebooks including the K36N, R34, M15RX, and GB-15N36. It fits the original connector and BMS interface on these models. Install it when the factory cell no longer holds charge or the laptop won't run unplugged.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK36N \/ R34 \/ M15RX platform fit:\u003c\/strong\u003e\n    These models share the same 14.8V four-cell pack geometry, connector pinout, and BMS handshake protocol — which is why a single OEM part number covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the 20160901 through full charge and discharge cycles on K36N hardware. The BMS authenticated correctly, charge termination triggered at 100%, and the protection circuit tripped at the expected low-voltage cutoff without false positives.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap calibration for the K36N:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to hibernate cutoff — do not interrupt it — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on Asus ROG models.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the K36N shuts down at 20–30% after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Asus ROG BIOS tracks a voltage-versus-capacity curve from the previous cell. When a new cell goes in, that curve no longer matches reality. Under full CPU and display load, the system sees a rapid voltage drop near 30% and interprets it as a critical low-voltage event — triggering shutdown even though charge remains. Running two full discharge-to-hibernate cycles recalibrates the fuel gauge IC against the new cell's actual discharge curve. After calibration, shutdowns at false low percentages stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting the new battery as 0% or unknown health\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads battery health from EEPROM data written by the original factory cell. A replacement cell ships with fresh EEPROM values that don't match the stored wear history — so the BIOS flags it as unknown or reports 0% health immediately after install. This is a data mismatch, not a faulty battery. Perform the full discharge-to-hibernate then uninterrupted charge cycle; the BIOS learn cycle overwrites the stale EEPROM snapshot and health reporting normalises, typically within two full cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409543790682,"sku":"BWCS-ARG200NB-1","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409543823450,"sku":"BWCS-ARG200NB-2","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409543856218,"sku":"BWCS-ARG200NB-3","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ARG200NB-1.webp?v=1779579964","url":"https:\/\/batteryweb.com\/products\/enz-k36n-replacement-battery-148v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}