{"product_id":"sony-vaio-vgn-tt11m-replacement-battery-111v-4400mah-li-ion","title":"Sony VAIO VGN-TT11M Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony VAIO VGN-TT Series — 11.1V Li-ion Replacement Battery (VGP-BPS14)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 4400mAh (48.84Wh) Li-ion cell replaces the VGP-BPS14 and VGP-BPS14\/S batteries in Sony VAIO VGN-TT series subnotebooks. It fits the VGN-TT11M, VGN-TT13\/N, VGN-TT190EIN, VGN-TT21M\/N, and over 30 additional TT-series models. Same voltage rail, same connector pinout, same BMS handshake protocol as the factory unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVGN-TT series compatibility:\u003c\/strong\u003e\n    Every model in this group shares the same 11.1V three-cell configuration, identical dock connector, and the same EEPROM-based BMS communication line. That common hardware base is why one part number covers the full TT range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a VGN-TT unit and confirmed the BMS handshake completes at connection, the charge controller accepted full current from 0% to 100%, and no fault codes triggered during load testing at combined CPU and display draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle recalibration on the VGN-TT:\u003c\/strong\u003e\n    After installing, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle on the TT platform and clears the inaccurate health warning that appears after every 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 battery health as poor immediately after fitting the new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VAIO TT's BIOS reads health data from the battery's EEPROM, not from live cell voltage. When a new cell arrives, that EEPROM carries factory default values that don't match the BIOS's stored charge history from the old pack. The mismatch triggers a \"degraded\" or \"replace battery\" flag even though the cell is new. Running one full discharge-to-hibernate then a complete uninterrupted charge to 100% forces the BIOS to rewrite its learn-cycle data against the new cell's actual profile, clearing the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% remaining on the charge indicator\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a calibration error. Under combined CPU and display load, the cell voltage drops sharply below the BMS cutoff threshold before the fuel gauge IC reaches zero — the gauge still shows charge remaining but the pack can no longer sustain the minimum voltage. It happens most often when the fuel gauge IC hasn't been calibrated to the new cell. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%, and the fuel gauge IC will map the new cell's discharge curve accurately. After calibration, the cutoff should align with 0% at or below 11.1V no-load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410807160922,"sku":"BWCS-BPS14NT-1","price":123.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410807193690,"sku":"BWCS-BPS14NT-2","price":141.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410807226458,"sku":"BWCS-BPS14NT-3","price":154.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPS14NT-1.webp?v=1779581141","url":"https:\/\/batteryweb.com\/products\/sony-vaio-vgn-tt11m-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}