{"product_id":"dell-xps-18-replacement-battery-148v-4600mah-li-polymer","title":"Dell XPS 18 D10H3 Replacement Battery 14.8V 4600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDell XPS 18 1810 \/ 1820 — 14.8V Li-Polymer Replacement Battery (D10H3)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 4600mAh (68.08Wh) Li-Polymer replacement battery for the Dell XPS 18 convertible. It fits the XPS 18-1810 and XPS 18-1820 and cross-references OEM part numbers D10H3, 4DV4C, and 63FK6. The connector pinout and BMS handshake match the original Dell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXPS 18 1810 and 1820 compatibility:\u003c\/strong\u003e\n    Both models run the same 14.8V power rail and use the same multi-pin BMS connector. The fuel gauge IC in each talks to the same EEPROM data structure, so one cell works across the full XPS 18 lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge, discharge, and BMS handshake verification on the XPS 18 platform. The BMS accepted authentication on first contact, reported state-of-charge correctly, and thermal cutoff thresholds stayed within Dell spec under sustained load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle recalibration on the XPS 18:\u003c\/strong\u003e\n    After installing, run one full discharge until the system hibernates on its own, then charge uninterrupted to 100%. This forces a BIOS battery learn cycle and clears the inaccurate health warning that appears in Dell Power Manager 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 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eDell's BIOS reads health data from EEPROM registers on the battery controller, not from live cell measurements. When a new cell goes in, those registers are blank or mismatched, and the BIOS flags the battery as degraded before it has ever been cycled. This is a data state issue, not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the learn cycle values. After two to three cycles, Dell Power Manager should report health as normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eXPS 18 shutting down abruptly at 20–30% charge shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC estimates remaining capacity based on calibration data from previous discharge curves. After a cell swap, that data reflects the old cell's chemistry, not the new one's. The result is a mismatch between the displayed percentage and real cell voltage — the system shows 25% but the cell has already hit the low-voltage cutoff under full CPU and display load. The fix is the same learn cycle: drain to hibernate, then charge to 100% without interruption. After two full cycles, the fuel gauge recalibrates to the new cell's actual voltage curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409776443482,"sku":"BWCS-DEP180NB-1","price":128.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409776476250,"sku":"BWCS-DEP180NB-2","price":147.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409776509018,"sku":"BWCS-DEP180NB-3","price":161.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEP180NB-1.webp?v=1779580819","url":"https:\/\/batteryweb.com\/products\/dell-xps-18-replacement-battery-148v-4600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}