{"product_id":"dell-latitude-xt-replacement-battery-111v-3300mah-li-ion","title":"Dell Latitude XT 11.1V Replacement Battery 451-10498","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDell Latitude XT \/ XT2 — 11.1V Li-ion Replacement Battery (451-10498)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V 3300mAh (36.63Wh) Li-ion battery replaces the original cell in the Dell Latitude XT and XT2 ultraportable notebook. It matches OEM part numbers 451-10498, FW273, 312-0650, PU536, MR369, PU501, and 0PU501. The connector, BMS handshake, and voltage rail are matched to what the Latitude XT platform expects.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLatitude XT and XT2 compatibility:\u003c\/strong\u003e\n    Both models run the same 11.1V three-cell configuration and use the same SMBus BMS protocol. The connector pinout and charge termination logic are identical across the XT and XT2, so one battery covers both generations.\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 the Latitude XT platform. The BMS handshook correctly on first connection, charge termination triggered at the expected 12.6V ceiling, and the OS read capacity without throwing an unknown device error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBIOS learn cycle after install:\u003c\/strong\u003e\n    After fitting this battery, run the laptop down to hibernate cutoff on a single discharge, 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 Dell notebooks.\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 after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDell's BIOS reads health data from the battery's EEPROM, which stores cycle count and rated capacity from the previous cell. When a new battery arrives, the EEPROM data doesn't yet match the BIOS's learned values, so it flags the cell as degraded. This isn't a fault with the replacement — it's a calibration mismatch. One full discharge-to-hibernate followed by a full uninterrupted charge writes fresh data to the learn cycle and clears the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLatitude XT shutting down at 20–30% charge shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't calibrated against the new cell's actual voltage curve. Under full CPU and display load, the cell voltage drops faster than the uncalibrated gauge expects, and the system interprets that voltage cliff as a critical low-battery event. The shutdown is a firmware protection response, not a defective battery. Run two full discharge-to-hibernate and full-recharge cycles — after the second cycle the gauge tracks the real voltage curve and the early shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409806327898,"sku":"BWCS-DE273HB-1","price":125.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409806360666,"sku":"BWCS-DE273HB-2","price":145.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409806393434,"sku":"BWCS-DE273HB-3","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DE273HB-1.webp?v=1779580971","url":"https:\/\/batteryweb.com\/products\/dell-latitude-xt-replacement-battery-111v-3300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}