{"product_id":"nokia-nokia-24-replacement-battery-385v-4400mah-li-polymer","title":"Nokia 2.4 WT242 Replacement Battery 3.85V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNokia 2.4 \/ TA-1277 \/ TA-1275 — 3.85V Li-Polymer Replacement Battery (WT242)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4400mAh lithium-polymer replacement battery for the Nokia 2.4 smartphone, covering variants TA-1277, TA-1275, and TA-1274. It replaces the original WT242 cell when the phone no longer holds a charge or shuts down unexpectedly. The battery measures 85.90 × 64.85 × 4.42mm and is a direct fit for the Nokia 2.4 chassis.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNokia 2.4 variant coverage:\u003c\/strong\u003e\n    The TA-1274, TA-1275, and TA-1277 share the same battery bay dimensions, connector pinout, and BMS handshake protocol — all three accept the WT242 cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through full charge and discharge on a Nokia 2.4 unit. The BMS accepted charge normally, protection circuits triggered correctly at low-voltage threshold, and the fuel gauge IC tracked state-of-charge without error flags after one complete cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one full discharge-to-charge cycle before resuming normal use. This allows the fuel gauge IC to map its coulomb counter against the new cell's actual discharge curve — skipping this step often causes percentage jumps or early shutdowns on the first few cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Nokia 2.4 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nokia 2.4 uses a coulomb-counter fuel gauge IC that builds its charge model from the previous cell's impedance and discharge curve. When you install a new cell, that stored model no longer matches the actual battery, so the reported percentage drifts from real capacity. The gauge recalibrates itself over one or two full discharge-charge cycles. Until that happens, readings of 100% that drop suddenly to 60%, or an OS that shows 30% remaining and then powers off, are expected — not a fault with the replacement cell.\u003c\/p\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\"\u003eThis is a voltage-cliff failure: under peak modem load or a screen-on burst, the cell's output voltage drops faster than the fuel gauge expects, hitting the low-voltage cutoff before the reported percentage reaches zero. It happens most often when the fuel gauge IC is still calibrated to the worn-out cell's flatter discharge curve. Run two full discharge-charge cycles without fast charging — this resets the IC's internal model to match the new cell. After recalibration, shutdowns at 20–30% should stop; if they persist past three full cycles, verify the replacement cell resting voltage reads at least 3.85V with a multimeter before reinstallation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391883182170,"sku":"BWCS-NKT240SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391883214938,"sku":"BWCS-NKT240SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391883247706,"sku":"BWCS-NKT240SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NKT240SL-1.webp?v=1779142480","url":"https:\/\/batteryweb.com\/products\/nokia-nokia-24-replacement-battery-385v-4400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}