{"product_id":"oppo-reno-4-5g-replacement-battery-774v-2000mah-li-polymer","title":"Oppo Reno 4 5G BLP789 Replacement Battery 7.74V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOppo Reno 4 5G — 7.74V Li-Polymer Replacement Battery (BLP789)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.74V, 2000mAh Li-Polymer replacement battery for the Oppo Reno 4 5G smartphone. It fits models PDPM00, PDPT00, and CPH2091. Use it to restore a phone suffering from rapid drain, unexpected shutdowns, or a battery that no longer holds a charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReno 4 5G platform fit (PDPM00 \/ PDPT00 \/ CPH2091):\u003c\/strong\u003e\n    These three model codes share the same BLP789 connector pinout and BMS handshake protocol. The fuel gauge IC expects a 7.74V dual-cell Li-Polymer pack — swapping to a single-voltage cell will cause gauge errors and charge cutoffs.\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 cycles on a CPH2091 unit. The BMS accepted the pack without fault flags, and the charge IC stepped through trickle, CC, and CV phases cleanly. No thermal alerts triggered.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration tip:\u003c\/strong\u003e\n    On first use after installation, disable VOOC fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins pushing into an uncalibrated state estimation.\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 Reno 4 5G after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Reno 4 5G modem draws a sharp current spike during 5G band switching. If the fuel gauge IC is still calibrated to the old cell's discharge curve, it misreads state-of-charge and the phone hits voltage floor before the OS sees 0%. The BMS cuts the load to protect the cell. One full slow-charge cycle re-anchors the coulomb counter to the new cell, and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone will not power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge during storage. If the cell voltage has dropped below 2.5V per cell, the BMS enters lockout mode and blocks all load output — the phone appears completely dead. Connect the phone to a 5V\/1A charger for 20–30 minutes without pressing the power button. This trickle current is enough to lift the cell above the BMS re-enable threshold. Once the screen shows a charge indicator, normal charging can resume.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391916638298,"sku":"BWCS-OPR400SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391916671066,"sku":"BWCS-OPR400SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391916703834,"sku":"BWCS-OPR400SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPR400SL-1.webp?v=1779142626","url":"https:\/\/batteryweb.com\/products\/oppo-reno-4-5g-replacement-battery-774v-2000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}