{"product_id":"google-nexus-5x-replacement-battery-38v-2600mah-li-polymer","title":"Google Nexus 5X Replacement Battery BL-T19 3.8V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGoogle Nexus 5X — 3.8V Li-Polymer Replacement Battery (BL-T19)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 2600mAh Li-Polymer cell is a direct cell replacement for the Google Nexus 5X and Nexus 5X LTE smartphones. It matches the OEM BL-T19 specification for voltage, capacity, and connector. Swap it in when the original cell can no longer hold charge through a standard day of use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNexus 5X and 5X LTE compatibility:\u003c\/strong\u003e\n    Both variants share the same battery bay geometry, connector pinout, and BMS handshake protocol — one cell fits both. The 3.8V nominal rail matches what the Snapdragon 808's power management IC expects.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a Nexus 5X unit. The BMS accepted the cell without fault flags, and the charge IC stepped through trickle, CC, and CV phases cleanly without thermal cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before USB-PD pushes high current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Nexus 5X after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff problem, not a capacity problem. The fuel gauge IC still holds the old cell's discharge curve in memory, so the percentage it reports does not match the new cell's actual voltage. When the modem fires or the screen peaks, the new cell's voltage drops below the shutdown threshold — around 3.2V — before the gauge reaches zero. One full discharge to automatic shutdown followed by a full charge resets the coulomb counter to the new cell's curve and eliminates the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not working after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first cycle after a cell swap, the Nexus 5X charge IC can fall back to standard 5V charging rather than negotiating USB-PD. The new cell arrives at a partial state of charge, and the BMS may flag the cell as unverified until one complete cycle runs. Run the phone down to automatic shutdown on standard charge, then plug into a USB-PD charger for a full charge — the IC will renegotiate the higher voltage on the second cycle. Confirm fast charging is active by checking that the charger brick feels warm within the first 10 minutes of connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392110624858,"sku":"BWCS-LKH790SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392110657626,"sku":"BWCS-LKH790SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392110690394,"sku":"BWCS-LKH790SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKH790SL-1.webp?v=1779143847","url":"https:\/\/batteryweb.com\/products\/google-nexus-5x-replacement-battery-38v-2600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}