{"product_id":"orange-san-francisco-ii-replacement-battery-37v-1100mah-li-ion","title":"Orange San Francisco II Li3712T42P3h475248 Replacement Battery 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOrange San Francisco II — 3.7V Li-ion Replacement Battery (Li3712T42P3h475248)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1100mAh Li-ion cell for the Orange San Francisco II (P736V \/ Blade II). It replaces OEM part Li3712T42P3h475248 when the original cell no longer holds a charge or the device shuts down unexpectedly. Fits the San Francisco II and San Francisco 2 interchangeably — same connector, same footprint.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSan Francisco II \/ P736V \/ Blade II compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions (51 × 46 × 5mm), voltage rail, and connector orientation. The BMS on each variant accepts the same charge profile, so one cell covers the entire San Francisco II family.\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 P736V unit. The BMS accepted the cell without flag errors, voltage held steady across the discharge curve, and the charge IC terminated correctly at 4.2V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge to auto-off, then charge uninterrupted to 100% before normal use. The San Francisco II's fuel gauge IC was calibrated to the original cell's discharge curve — one full cycle resets that reference so percentage reporting is accurate.\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 San Francisco II\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe San Francisco II's modem draws a sharp current spike during calls and data bursts. An aged cell cannot sustain voltage under that load, and the BMS trips the circuit before the fuel gauge reads zero — causing an abrupt shutdown that looks like a software crash. This same behaviour can appear briefly with a new replacement cell if the fuel gauge IC hasn't yet mapped the new cell's discharge curve. One full discharge-charge cycle gives the coulomb counter accurate data and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice won't power on after sitting in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells left unused for months can drop below 2.5V per cell, triggering a BMS lockout that blocks normal startup. The phone will show no response — no boot screen, no charging indicator. Connect the device to a wall charger (not USB from a PC) and leave it for 20–30 minutes before attempting to power on. Once the cell climbs back above the BMS recovery threshold, the charge IC takes over and the device boots normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405045596250,"sku":"BWCS-ZTP736SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405045629018,"sku":"BWCS-ZTP736SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405045661786,"sku":"BWCS-ZTP736SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTP736SL-1.webp?v=1779369898","url":"https:\/\/batteryweb.com\/products\/orange-san-francisco-ii-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}