{"product_id":"honor-80-se-replacement-battery-389v-4700mah-li-polymer","title":"Honor 80 SE Replacement Battery HB486492EGW 3.89V 4700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHonor 80 SE — 3.89V Li-Polymer Replacement Battery (HB486492EGW)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.89V, 4700mAh (18.28Wh) Li-Polymer cell for the Honor 80 SE smartphone. It replaces the OEM battery HB486492EGW when the original has lost capacity or no longer holds a charge. Dimensions are 90.30 × 63.30 × 4.80mm — verify against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHonor 80 SE fitment:\u003c\/strong\u003e\n    The 80 SE uses a specific connector orientation and BMS handshake tied to the HB486492EGW part number. Fitting an incorrect cell — even one with the same voltage — can trigger charge IC errors or prevent the device from booting.\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 Honor 80 SE platform. The BMS accepted the cell without error flags, and the charge IC stepped through CC\/CV phases normally across multiple cycles.\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 for one complete discharge-charge cycle. This allows the fuel gauge IC to recalibrate its coulomb counter against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.\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 Honor 80 SE after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still running the discharge curve of the old, degraded cell. A new cell has a steeper voltage cliff under load — the modem or screen draws a current spike, voltage drops below the shutdown threshold, and the phone cuts out even though the percentage display still reads high. The fix is one full uninterrupted discharge-to-shutdown followed by a full charge with fast charging off. After that cycle, the coulomb counter has a fresh reference curve and percentage readings stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHonor 80 SE won't power on after sitting in storage with a flat battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells that self-discharge below approximately 2.5V per cell trigger BMS lockout — the protection circuit opens to prevent further discharge damage, and the phone appears completely dead. Plug into a charger and leave it for 15–20 minutes before attempting to power on; the charge IC needs to trickle enough current into the cell to bring it above the BMS re-enable threshold. If the device still does not respond, try a different cable and a wall adapter rated at least 5V\/1A — USB ports on computers often cannot deliver enough current to wake a deeply discharged cell. Once the phone boots, complete a full charge cycle before normal use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391804014682,"sku":"BWCS-HNR800SL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391804047450,"sku":"BWCS-HNR800SL-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391804080218,"sku":"BWCS-HNR800SL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HNR800SL-1.webp?v=1779142181","url":"https:\/\/batteryweb.com\/products\/honor-80-se-replacement-battery-389v-4700mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}