{"product_id":"samsung-galaxy-z-flip-replacement-battery-385v-850mah-li-polymer","title":"Samsung Galaxy Z Flip EB-BF701ABY Replacement Battery 3.85V 850mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy Z Flip — 3.85V Li-Polymer Replacement Battery (EB-BF701ABY)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 850mAh Li-Polymer replacement battery for the Samsung Galaxy Z Flip foldable smartphone. It carries OEM part number EB-BF701ABY and fits SM-F7000, SM-F700W\/DS, SM-F700N, and related variants. Replace this cell when the original has degraded past the point of holding a useful charge through a normal day.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZ Flip SM-F700 platform fit:\u003c\/strong\u003e\n    The SM-F700 series shares a single battery bay geometry, connector pinout, and BMS handshake protocol across all regional variants. The EB-BF701ABY cell slots into all of them without modification to the flex connector or charge IC communication lines.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on an SM-F700 unit. The BMS accepted the cell without a fault flag, charge current ramped correctly through CC and CV phases, and the protection circuit tripped cleanly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The coulomb counter in the fuel gauge IC calibrates against the new cell's discharge curve during this cycle — skipping it can leave the IC reading against the old cell's profile, causing erratic percentage jumps early on.\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 Z Flip after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Z Flip's Snapdragon 855 platform pulls a sharp current spike when the modem switches between LTE bands or the foldable display refreshes at full brightness. A new cell with an uncalibrated fuel gauge IC can report 25% remaining while the actual resting voltage has already dropped to near the BMS cutoff threshold under that load. The protection circuit reads the voltage sag as a fault and shuts the board down before the OS can intervene. Run that full recalibration cycle first — after one complete discharge below 5% and a full charge to 100%, the IC maps the new cell's voltage-to-capacity curve and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a cell swap, the charge IC on the Z Flip sometimes stays in trickle mode and will not negotiate the fast charge handshake with the charger on the first session. This happens because the IC starts in a conservative recovery state when it detects a new cell — it checks internal resistance before allowing high-current input. Plug into a Samsung 25W USB-PD adapter, let the phone charge uninterrupted to 100% without removing the cable, and the IC will clear the conservative flag. Fast charging activates normally on the next session once the cell's impedance reading is logged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391870337114,"sku":"BWCS-SMF701SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391870369882,"sku":"BWCS-SMF701SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391870402650,"sku":"BWCS-SMF701SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMF701SL-1.webp?v=1779142431","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-z-flip-replacement-battery-385v-850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}