{"product_id":"nokia-9-pureview-replacement-battery-385v-3250mah-li-polymer","title":"HE354 Nokia 9 PureView Replacement Battery 3.85V 3250mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNokia 9 PureView — 3.85V Li-Polymer Replacement Battery (HE354)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3250mAh Li-Polymer cell built to the HE354 specification. It fits the Nokia 9 PureView across both TA-1082 and TA-1087 regional variants. Swap it in when the original cell no longer holds a charge through a full day of use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTA-1082 and TA-1087 fit:\u003c\/strong\u003e\n    Both variants share the same internal chassis, connector pinout, and BMS handshake protocol — one cell covers both boards 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 charge and discharge cycles on the Nokia 9 PureView mainboard. The BMS accepted the cell on first connection, reported state-of-charge correctly after one full cycle, and thermal output during charge stayed within expected range for a high-impedance new cell.\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 complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.\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 replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nokia 9 PureView uses a Snapdragon platform with an active modem and a five-lens camera array — both draw sharp current spikes. A new cell with a slightly different internal resistance curve can drop below the BMS cutoff voltage under that load, even when the fuel gauge still shows charge remaining. This is a voltage-cliff problem, not a capacity problem. Run one full discharge cycle without triggering the camera burst mode or LTE streaming, and the fuel gauge IC will recalibrate its low-voltage threshold to match the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not activating on first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a cell swap, the charge IC on the Nokia 9 PureView defaults to standard 5V charging on the first cycle. It does this as a protective measure — the BMS has no historical data on the new cell and withholds high-current negotiation until it completes one baseline charge. Plug into a USB-PD charger and expect standard charging on that first cycle only. Fast charge will activate automatically from the second cycle onward once the BMS has logged the cell's baseline impedance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391998001242,"sku":"BWCS-NKT910SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391998034010,"sku":"BWCS-NKT910SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391998066778,"sku":"BWCS-NKT910SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NKT910SL-1.webp?v=1779142856","url":"https:\/\/batteryweb.com\/products\/nokia-9-pureview-replacement-battery-385v-3250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}