{"product_id":"sony-vaio-vgn-tt11m-replacement-battery-111v-6600mah-li-ion","title":"Sony VAIO VGN-TT11M 11.1V Replacement Battery VGP-BPL14","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony VAIO VGN-TT Series — 11.1V Li-ion Replacement Battery (VGP-BPL14)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V 6600mAh (73.26Wh) Li-ion battery replaces the original VGP-BPL14 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. The physical footprint matches the OEM unit at 205.65 × 51.59 × 45.32mm — it seats and locks without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTT-series platform compatibility:\u003c\/strong\u003e\n    All covered models share the same 11.1V three-cell rail, the same VGP-BPL14 connector pinout, and an identical BMS handshake with the VAIO EC firmware. One battery SKU covers the full TT lineup without hardware changes.\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-TT11M and monitored BMS communication via the SMBus interface. The protection circuit responded correctly to charge cutoff at 12.6V and triggered under-voltage lockout at 9.0V with no false trips during load transitions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on VAIO TT hardware:\u003c\/strong\u003e\n    After installing, run one full discharge until the laptop hibernates, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle 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 installation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VAIO EC reads health data from EEPROM registers on the battery's BMS board. When a new cell is installed, those registers reflect factory defaults — not a completed learn cycle — so the BIOS flags the battery as degraded or unknown. This is a firmware read issue, not a cell defect. Run one full discharge-to-hibernate then an uninterrupted full charge. After that cycle the BIOS health indicator typically resolves to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down abruptly while the OS gauge still shows 20–25%\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC has not yet mapped the new cell's actual voltage curve. The old calibration data anchors the 0% cutoff point too high on the discharge curve, so the laptop hits under-voltage lockout before the displayed percentage reaches zero. It is not a capacity fault. Complete two to three full discharge-to-hibernate and full-charge cycles — the fuel gauge IC recalibrates against the real cell chemistry each pass. After the third cycle, the shutdown point should align with sub-5% displayed charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410806374490,"sku":"BWCS-BPL14HT-1","price":146.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410806407258,"sku":"BWCS-BPL14HT-2","price":170.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410806440026,"sku":"BWCS-BPL14HT-3","price":187.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/batteryweb.com\/products\/sony-vaio-vgn-tt11m-replacement-battery-111v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}