{"product_id":"sony-vaio-vpc-ca16ec-replacement-battery-111v-4400mah-li-ion","title":"Sony VAIO VGP-BPS26A Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony VAIO VPC-CA Series — 11.1V Li-ion Replacement Battery (VGP-BPS26A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) lithium-ion replacement battery for the Sony VAIO VPC-CA series notebooks. It fits the VPC-CA16EC, VPC-CA17EC, VPC-CA18EC, VPC-CA26EC, and over 660 additional VAIO models that share the same battery bay and connector. OEM part numbers covered include VGP-BPS26A, VGP-BPS26, and VGP-BPL26.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVAIO VPC-CA platform compatibility:\u003c\/strong\u003e\n    These CA-series models share a unified 11.1V three-cell battery rail, a common 272mm bay form factor, and the same BMS handshake protocol — which is why a single cell works across all of them without firmware conflicts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on VPC-CA hardware. The BMS completed full charge acceptance without triggering overvoltage cutoff, and the protection circuit responded correctly to load fluctuations at the cell level.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the VAIO VPC-CA:\u003c\/strong\u003e\n    After fitting this cell, 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\"\u003eWhy the VAIO VPC-CA reports poor battery health immediately after a replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VAIO's BIOS reads health data from EEPROM stored on the battery's BMS — not from live cell measurements. When a new cell arrives, that EEPROM carries fresh default values that don't match the charge history the BIOS expects to see. The result is a \"poor health\" or \"replace battery\" warning even though the cell is brand new. One full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the BIOS rewrite its learned capacity baseline against the new cell's actual chemistry.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVAIO VPC-CA shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under combined CPU and display load — what's called a voltage cliff. The fuel gauge IC estimates remaining capacity under light load, but the BIOS pulls the plug when actual cell voltage falls below the protection threshold during a heavy-draw spike. It is not a BMS fault or a firmware lock. Run two full calibration cycles — discharge to hibernate cutoff, charge to 100% uninterrupted — and the fuel gauge IC will map the new cell's discharge curve accurately. After calibration, the reported percentage and actual shutdown point will align.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410740740186,"sku":"BWCS-BPS26NB-1","price":117.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410740772954,"sku":"BWCS-BPS26NB-2","price":134.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410740805722,"sku":"BWCS-BPS26NB-3","price":147.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPS26NB-1.webp?v=1779581091","url":"https:\/\/batteryweb.com\/products\/sony-vaio-vpc-ca16ec-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}