{"product_id":"dell-latitude-e5550-replacement-battery-74v-6850mah-li-polymer","title":"Dell Latitude E5550 Replacement Battery 7.4V 6850mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDell Latitude E5550 — 7.4V Li-Polymer Replacement Battery (G5M10)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 6850mAh (50.69Wh) lithium-polymer battery for the Dell Latitude E5550 and Latitude 15 5000 series 15.6-inch business notebooks. It replaces OEM part numbers G5M10, 8V5GX, 6MT4T, F5WW5, and over a dozen additional Dell cross-references. Connector, BMS handshake, and physical dimensions match the original tray exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLatitude E5550 and E5450 compatibility:\u003c\/strong\u003e\n    Both the E5550 and E5450 share the same 7.4V two-cell battery rail, identical battery bay dimensions, and the same EC firmware BMS handshake — that's why one part number spans both platforms.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an E5550 and confirmed the BIOS accepted it without an unknown-device flag, the charge controller stepped through all three charge phases correctly, and the fuel gauge IC registered the full 50.69Wh rating within two cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install discharge cycle on the E5550:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100%. This forces the Dell battery learn cycle to reset against the new cell and clears the inaccurate \"poor health\" warning the BIOS posts 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 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Dell EC firmware stores battery health data from the previous cell in EEPROM and compares it against the new cell's reported state on first boot. A fresh cell with zero discharge cycles reads differently than the worn profile stored — the BIOS flags this as degraded health, not a fault in the new battery. Running the battery learn cycle (full discharge to hibernate cutoff, then a full uninterrupted charge) rewrites the stored profile. After one complete cycle, the health indicator should return to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's voltage-to-capacity curve. The gauge reports 25% remaining, but the actual cell voltage has already dropped below the EC's cutoff threshold under combined CPU and display load. It's not a faulty battery — the IC needs recalibration cycles against the new cell chemistry. Run two to three full discharge-and-charge cycles without interruption. After the third cycle the gauge stabilises and shutdowns at false-low percentages stop. Check the battery tab in Dell Power Manager — the reported Wh should read close to 50.69Wh once calibration completes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409770774618,"sku":"BWCS-DE1550NB-1","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409770807386,"sku":"BWCS-DE1550NB-2","price":101.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409770840154,"sku":"BWCS-DE1550NB-3","price":112.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DE1550NB-1.webp?v=1779580773","url":"https:\/\/batteryweb.com\/products\/dell-latitude-e5550-replacement-battery-74v-6850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}