{"product_id":"asus-tp201-replacement-battery-114v-4150mah-li-ion","title":"Asus TP201 Replacement Battery 11.4V 4150mAh B31N1536","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus TP201SA Series — 11.4V Li-ion Replacement Battery (B31N1536)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.4V 4150mAh (47.31Wh) Li-ion battery for the Asus TP201 and TP201SA VivoBook Flip hybrid. It fits the TP201SA-FV0027D, TP201SA-FV0007T, and over a dozen additional TP201SA variants. The OEM part numbers it replaces are B31N1536 and 0B200-02040000.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTP201SA series compatibility:\u003c\/strong\u003e\n    All TP201SA models share the same 11.4V three-cell configuration, connector pinout, and BMS handshake protocol. That common electrical architecture means one battery covers the full production run of this hybrid line without firmware conflicts or connector mismatch.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, full load discharge, and BMS cutoff on a TP201SA unit. The BMS communicated state-of-charge correctly, charge termination triggered at the expected 12.6V ceiling, and no fault flags were thrown during the draw-down phase.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the TP201SA:\u003c\/strong\u003e\n    After fitting, run one full discharge to hibernate-cutoff, 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 this platform.\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\n  \u003cp class=\"bpw-desc-p\"\u003eThe TP201SA's BIOS reads health data from EEPROM registers carried over from the old cell, not from the physical chemistry of the new one. Until a learn cycle overwrites those registers, the system reports the new battery as degraded or unknown. This is a firmware state problem, not a cell defect. Run a full discharge to hibernate-cutoff followed by an uninterrupted charge to 100% — most units clear the health warning within two cycles.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTP201SA shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on this platform was calibrated against the original cell's discharge curve. A new cell has a slightly different voltage-to-capacity slope, so the gauge reads 20–30% remaining when the cell voltage has already dropped below the load-sustain threshold under full CPU and display draw. The system shuts down to protect the cell, even though the gauge says charge remains. Two full calibration cycles — complete discharge to cutoff, full uninterrupted recharge — align the fuel gauge IC to the new cell's actual curve and eliminate the early shutdown.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409657888858,"sku":"BWCS-ATP201NB-1","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409657921626,"sku":"BWCS-ATP201NB-2","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409657954394,"sku":"BWCS-ATP201NB-3","price":120.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ATP201NB-1.webp?v=1779580339","url":"https:\/\/batteryweb.com\/products\/asus-tp201-replacement-battery-114v-4150mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}