{"product_id":"dell-vostro-1200-replacement-battery-111v-4400mah-li-ion","title":"BATFT00L4 Dell Vostro 1200 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDell Vostro 1200 — 11.1V Li-ion Replacement Battery (BATFT00L4)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery pack for the Dell Vostro 1200 and Vostro 1200n laptops. It replaces OEM part numbers BATFT00L4, BATFT00L6, RM627, RM628, 4UR18650-2-T0044, and 3UR18650-2-T0044. Fits the original battery bay without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVostro 1200 and 1200n compatibility:\u003c\/strong\u003e\n    Both the Vostro 1200 and 1200n share the same battery bay dimensions, connector pinout, and BMS communication protocol. A single cell swap covers both variants — no adapter or firmware change needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on a Vostro 1200 unit. The BMS handshake completed cleanly, the OS recognised the pack, and charge current behaved correctly at each stage from trickle through to float.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration for the Vostro 1200:\u003c\/strong\u003e\n    After installing, 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 in Dell's battery meter 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 poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Vostro 1200 BIOS reads EEPROM data stored on the battery controller, not live cell voltage. When a new pack is installed, that EEPROM data does not match the BIOS's learnt charge profile for the old cell, so it flags the battery as degraded. This is not a fault with the replacement cell. Run a full discharge to hibernate cutoff, then a single uninterrupted charge to 100%. After that cycle, the BIOS rewrites its health baseline and the warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% charge shown on the gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops below the safe operating threshold under full CPU and display load before the fuel gauge reaches zero — a voltage cliff. The fuel gauge IC is still working from a calibration map built around the old cell's discharge curve. The new cell's curve sits in a different position, so the gauge reads high while the actual voltage is already too low to sustain the load. Fix it by running two complete calibration cycles: discharge fully to automatic hibernate, then charge to 100% each time. After two cycles the fuel gauge IC recalibrates to the new cell and the shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410822463578,"sku":"BWCS-DEV120NB-1","price":104.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410822496346,"sku":"BWCS-DEV120NB-2","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410822529114,"sku":"BWCS-DEV120NB-3","price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEV120NB-1.webp?v=1779581242","url":"https:\/\/batteryweb.com\/products\/dell-vostro-1200-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}