{"product_id":"telstra-4gx-buzz-replacement-battery-38v-2300mah-li-ion","title":"Telstra 4GX Buzz Compatible Battery 3.8V 2300mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTelstra 4GX Buzz — 3.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2300mAh lithium-ion battery for the Telstra 4GX Buzz Android smartphone. It fits directly into the original battery bay and restores power capacity lost through cell degradation. Dimensions are 66.60 × 50.20 × 5.30mm — confirm your original cell matches before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4GX Buzz platform fit:\u003c\/strong\u003e\n    The 4GX Buzz runs a standard 3.8V nominal rail with a charge ceiling of 4.35V. This cell matches that rail. The phone's charge IC communicates directly with the cell — no adapter or wiring change is needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through a full charge and discharge on the 4GX Buzz platform. The BMS accepted the cell without fault flags, and the charge IC stepped through its taper phase correctly at end-of-charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge recalibration:\u003c\/strong\u003e\n    After installation, disable fast charging in the phone's settings and run one complete discharge down to automatic shutdown, then charge uninterrupted to 100%. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 4GX Buzz shuts down suddenly at 20–30% after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 4GX Buzz uses a coulomb-counter fuel gauge that was calibrated to the discharge curve of the original — usually degraded — cell. When a new cell with a steeper voltage cliff is installed, the gauge's stored curve no longer matches the actual cell behaviour. Under modem or screen load, voltage drops faster than predicted, and the phone triggers a protective shutdown before the gauge reaches 0%. One full discharge-to-shutdown followed by a complete uninterrupted charge resets the calibration reference and stops the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eErratic percentage readings — jumping from 45% to 62% or dropping 15% in seconds — point to the fuel gauge IC recalibrating against an unfamiliar cell impedance profile. The gauge interpolates state-of-charge from voltage and current data, and a new cell's internal resistance differs from the worn original. The fix is straightforward: let the phone discharge fully to auto-shutdown, then charge without interruption to 100%. After that single anchored cycle, the gauge locks onto the new cell's curve and percentage readings stabilise.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392107511898,"sku":"BWCS-ZTA430SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392107544666,"sku":"BWCS-ZTA430SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392107577434,"sku":"BWCS-ZTA430SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTA430SL-1.webp?v=1779143816","url":"https:\/\/batteryweb.com\/products\/telstra-4gx-buzz-replacement-battery-38v-2300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}