{"product_id":"dell-latitude-14-5400-replacement-battery-76v-8400mah-li-ion","title":"Dell Latitude 14 5400 Replacement Battery 4GVMP 7.6V 8400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDell Latitude 14 5400 \/ 5500 — 7.6V Li-ion Replacement Battery (4GVMP)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.6V, 8400mAh (63.84Wh) Li-ion battery replaces the original cell in the Dell Latitude 14 5400, Latitude 14 5500, and Precision 3540. It matches the OEM voltage rail and connector pinout for a direct swap. Capacity figures come from the product data — not estimated or rounded.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLatitude 5400 \/ 5500 and Precision 3540 platform:\u003c\/strong\u003e\n    These three models share the same 7.6V two-cell architecture, connector footprint, and BMS handshake protocol — which is why one battery covers all of them. The EEPROM data embedded in the cell communicates directly with the Dell EC firmware to report state-of-charge and health.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in a Latitude 5400 chassis and confirmed the BMS handshake completes on first boot. The EC accepted the battery without throwing an unknown-device flag, and charge negotiation initiated normally from cold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap calibration on Dell firmware:\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 after every cell swap on Dell Latitude hardware.\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 EC firmware reads health data from the EEPROM written to the original cell at the factory. When a new cell arrives, the EEPROM cycle count and wear data don't match the charge history the EC expects. The system flags this as degraded health — even on a brand-new battery. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the BIOS learn cycle to rewrite its reference table against the new cell's actual chemistry.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% remaining after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-cliff failure, not a capacity problem. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can recalculate — the system hits the low-voltage cutoff before the displayed percentage reaches zero. The fuel gauge IC hasn't calibrated its discharge curve against the new cell yet. Run two full discharge-to-cutoff cycles and the shutdowns will move progressively closer to 0% as the IC learns the actual voltage curve. Target a resting voltage of 8.4V after a full charge to confirm the cell is healthy.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409689935962,"sku":"BWCS-DEL155NB-1","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409689968730,"sku":"BWCS-DEL155NB-2","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409690001498,"sku":"BWCS-DEL155NB-3","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEL155NB-1.webp?v=1779580453","url":"https:\/\/batteryweb.com\/products\/dell-latitude-14-5400-replacement-battery-76v-8400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}