{"product_id":"bea-fon-classic-line-c30-replacement-battery-37v-1050mah-li-ion","title":"Bea-fon Classic Line C30 Replacement Battery 3.7V 1050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBea-fon Classic Line C30 — 3.7V Li-ion Replacement Battery (ICP4\/38\/57 1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion cell replaces the original battery in the Bea-fon Classic Line C30 mobile phone. It delivers 1050mAh (3.89Wh) capacity at the same voltage and physical footprint as the factory unit. Dimensions are 61.95 × 38.00 × 4.50mm — verify against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClassic Line C30 fitment:\u003c\/strong\u003e\n    The C30 uses a single-cell 1S1P configuration on a 3.7V rail. This cell matches that architecture — same connector orientation, same BMS contact layout, same physical envelope. No modifications needed.\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 a C30 unit. The BMS handshake completed correctly, charge termination triggered at the expected voltage, and the fuel gauge IC accepted the new cell without throwing a fault state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting, disable fast charging if your charger supports it and run one full discharge-to-charge cycle before normal use. This lets the fuel gauge IC map the new cell's discharge curve before it starts reporting percentages to the OS.\n    \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 C30 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe C30's fuel gauge IC holds a discharge curve calibrated to the original cell. A new cell has a slightly different voltage-to-capacity curve, so the IC underestimates how close the cell is to its minimum voltage. Under brief high-current loads — a call connecting, the screen at full brightness — the cell voltage sags below the BMS cutoff threshold before the gauge shows low battery. One full discharge cycle, draining until the phone shuts itself off naturally, then a full charge, resets the coulomb counter to the new cell's actual curve. After that cycle, shutdowns at 20–30% stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone not powering on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage. If this cell dropped below approximately 2.5V during transit or shelf time, the BMS may have entered a lockout state to prevent damage from deep discharge. The phone will show nothing — no charging animation, no response. Connect it to a wall charger, not a PC port, and leave it for 15–20 minutes without interruption. A wall charger supplies stable 5V at sufficient current for the charge IC to trickle the cell back above the BMS re-enable threshold, typically around 2.9V, after which normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392106922074,"sku":"BWCS-BEC300SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392106954842,"sku":"BWCS-BEC300SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392106987610,"sku":"BWCS-BEC300SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BEC300SL-1.webp?v=1779143796","url":"https:\/\/batteryweb.com\/products\/bea-fon-classic-line-c30-replacement-battery-37v-1050mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}