{"product_id":"sfr-staraddict-2-replacement-battery-37v-1500mah-li-ion","title":"SFR Staraddict 2 Replacement Battery 3.7V 1500mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSFR Staraddict 2 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V Li-ion cell rated at 1500mAh (5.55Wh), built to fit the SFR Staraddict 2 and Staraddict II smartphones. The original cell degrades after 300–500 charge cycles, causing charge-holding problems and unexpected shutdowns. Swapping it restores normal power delivery to the phone's SoC, modem, and display subsystems.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStaraddict 2 and Staraddict II fit:\u003c\/strong\u003e\n    Both model names refer to the same hardware platform — same battery bay dimensions (64.60 × 43.95 × 5.10mm), same connector pinout, and the same charge IC on the motherboard. One cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and load discharge on the Staraddict 2 platform. The BMS communicated correctly with the phone's fuel gauge IC, and the charge IC accepted the cell without flagging a fault condition.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging for the first full discharge-charge cycle. The fuel gauge IC is still calibrated to the old cell's discharge curve. One complete cycle at standard current lets it remap against the new cell 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 Staraddict 2 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe phone uses a coulomb counter in the fuel gauge IC to track charge state. That counter builds its reference model from cycles on the original cell. When you install a new cell, the IC has no calibration data for its specific discharge curve. It will report inaccurate percentages — sometimes reading 40% when the cell is nearly flat — until it completes at least one full discharge-charge cycle. After one full cycle at standard charge current, the fuel gauge resets its model and percentage readings stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the modem or display pulls a high current burst and the cell voltage drops sharply below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. It is a voltage-cliff failure, not a capacity problem. The fuel gauge is reading stored charge in coulombs, but the cell cannot hold its voltage rail under load at that state of charge. Run one full discharge cycle down to automatic cutoff, then charge to 100% — this resets the coulomb counter baseline and the shutdowns typically stop after one or two calibration cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404335743066,"sku":"BWCS-OT995SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404335775834,"sku":"BWCS-OT995SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404335808602,"sku":"BWCS-OT995SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OT995SL-1.webp?v=1779369779","url":"https:\/\/batteryweb.com\/products\/sfr-staraddict-2-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}