{"product_id":"samsung-galaxy-z-flip-f707u-replacement-battery-388v-2500mah-li-polymer","title":"Samsung Galaxy Z Flip F707U Replacement Battery 3.88V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy Z Flip F707U — 3.88V Li-Polymer Replacement Battery (EB-BF707ABY)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.88V, 2500mAh Li-Polymer cell is a direct replacement for the Samsung Galaxy Z Flip F707U and Z Flip 5G (SM-F707U1, SM-F707W). It fits the slim foldable chassis and connects to the same BMS handshake points as the original EB-BF707ABY. Capacity listed is 2500mAh — use this figure, not third-party sources.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZ Flip foldable platform fit:\u003c\/strong\u003e\n    The F707U, SM-F707U1, and SM-F707W share an identical battery bay geometry, connector pinout, and BMS communication protocol — which is why one cell covers all three variants 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 Z Flip 5G hardware. The BMS accepted the cell on first connection, thermal cutoff thresholds triggered correctly at upper voltage limits, and the charge IC registered a full 3.88V terminal voltage at completion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before the coulomb counter begins reporting accurate state-of-charge data to the OS.\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\"\u003eA new cell has a discharge curve the fuel gauge IC has never seen before. When the phone draws a high current burst — 5G modem handshake or the cover display lighting simultaneously with the main panel — voltage sags below the BMS cutoff threshold before the percentage readout catches up. The phone interprets this as a fault and shuts down, even though the reported figure still shows charge remaining. One full slow discharge-charge cycle recalibrates the coulomb counter so the voltage cliff maps correctly to the percentage scale. After that cycle, the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not registering on the first charge after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn a freshly installed cell, the BMS may not complete the USB-PD handshake on the first plug-in because the charge IC runs an initial cell-validation sweep at low current before allowing the high-voltage fast-charge contract. This looks like standard 5W charging even with a 25W adapter connected. Unplug, wait 30 seconds, and reconnect — the BMS completes its sweep and the adapter renegotiates to the correct fast-charge profile. If it still defaults to slow charge after two attempts, check that terminal voltage is above 3.0V before plugging in.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391801983066,"sku":"BWCS-SMZ707SL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391802015834,"sku":"BWCS-SMZ707SL-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391802048602,"sku":"BWCS-SMZ707SL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMZ707SL-1.webp?v=1779142198","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-z-flip-f707u-replacement-battery-388v-2500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}