{"product_id":"vodafone-simply-1-replacement-battery-37v-750mah-li-ion","title":"Vodafone Simply 1 Replacement Battery 3.7V 750mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVodafone Simply 1 \/ Simply 2 (VS1, VS2) — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 750mAh Li-ion cell for the Vodafone Simply 1, Simply 2, VS1, and VS2 handsets. These are basic mobile phones built for straightforward calling and messaging. It replaces the original cell when the phone no longer holds charge through a standard day of use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimply 1, Simply 2, VS1, VS2 platform fit:\u003c\/strong\u003e\n    These four models share the same battery bay dimensions (53.80 × 33.70 × 5.80mm), connector pinout, and charge IC signalling. Swapping between any of them uses the same cell without modification.\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 discharge on the VS2 platform. The BMS accepted charge current correctly, voltage held steady under active call load, and the protection circuit tripped cleanly at the low-voltage threshold without hard-locking the board.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to automatic cutoff, then charge uninterrupted to 100% before normal use. The phone's fuel gauge IC is calibrated against the old cell's discharge curve — one complete cycle rewrites that reference against the new 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 Vodafone Simply series\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is the most common symptom after a cell ages past 18–24 months. The fuel gauge IC reports 20–30% remaining, but the cell's internal resistance has climbed high enough that it cannot sustain voltage when the GSM radio fires a transmission burst. Voltage drops below the BMS cutoff threshold in milliseconds — the phone shuts off before the OS can log a low-battery warning. A new cell with lower internal resistance eliminates the sag. After fitting, run one full discharge cycle so the fuel gauge IC recalibrates its cutoff map to the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shows wrong battery percentage after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on these handsets uses a stored discharge curve from the original cell to estimate state of charge. A new cell has a different impedance profile, so the percentage reading drifts — often jumping or reading full when the cell is not. This is not a fault with the replacement cell. Discharge the phone fully until it shuts itself off, then charge to 100% in one uninterrupted session. That single cycle gives the coulomb counter enough data to rebuild an accurate curve against the new cell's actual voltage profile.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405166510170,"sku":"BWCS-MYV5SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405166542938,"sku":"BWCS-MYV5SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405166575706,"sku":"BWCS-MYV5SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MYV5SL-1.webp?v=1779370333","url":"https:\/\/batteryweb.com\/products\/vodafone-simply-1-replacement-battery-37v-750mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}