{"product_id":"nokia-8-replacement-battery-385v-2500mah-li-polymer","title":"HE328 Nokia 8 Replacement Battery 3.85V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNokia 8 Series — 3.85V Li-Polymer Replacement Battery (HE328)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 2500mAh Li-Polymer cell replaces the OEM HE328 battery in the Nokia 8 smartphone. It fits the Nokia 8, 8 Global Dual SIM, 8 Global Dual SIM TD-LTE, and 8 Global TD-LTE variants. Swap it in when the original cell no longer holds a working charge or causes unexpected shutdowns during normal use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNokia 8 variant compatibility:\u003c\/strong\u003e\n    All four listed Nokia 8 variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell fits all of them without modification.\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 Nokia 8 hardware. The BMS accepted the charge profile without triggering overcurrent protection, and cell voltage held steady at load across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its discharge curve against the new cell 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 Nokia 8 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nokia 8 uses a coulomb-counter fuel gauge IC that was calibrated to the original cell's discharge curve. After a cell swap, the IC still references the old curve — so when the new cell's voltage drops under modem or display load, the phone shuts off even though the percentage display shows charge remaining. This is a voltage cliff, not a capacity fault. Run one full uninterrupted discharge down to automatic shutdown, then charge to 100% without interruption — this resets the coulomb counter to the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone feels warm near the battery bay during the first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell has higher internal impedance than a used one — the charge IC pushes current into more resistance, and that converts to heat. This is normal for the first two to three charge cycles as the cell's impedance drops toward operating range. Keep the phone on a flat, hard surface during those first charges so heat can dissipate rather than trap. If warmth continues past the third full cycle, check that the battery connector is fully seated — a partial connection forces the charge IC to compensate and drives temperature up.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392045940826,"sku":"BWCS-NK800SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392045973594,"sku":"BWCS-NK800SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392046006362,"sku":"BWCS-NK800SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK800SL-1.webp?v=1779143125","url":"https:\/\/batteryweb.com\/products\/nokia-8-replacement-battery-385v-2500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}