{"product_id":"nokia-3250-replacement-battery-37v-700mah-li-ion","title":"Nokia BP-6M 3250 Replacement Battery 3.7V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNokia 3250 \/ 6280 \/ 9300i Series — 3.7V Li-ion Replacement Battery (BP-6M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 700mAh Li-ion replacement for the Nokia BP-6M battery. It fits the Nokia 3250, 6280, 9300i, 3250 XpressMusic, and over ten additional Nokia models from the mid-2000s era. If your original BP-6M has degraded and the phone no longer holds a usable charge, this cell replaces it directly using the same connector and form factor.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNokia 3250 \/ 6280 \/ 9300i platform:\u003c\/strong\u003e\n    These models share the BP-6M footprint, connector pinout, and voltage rail. One cell fits all of them because Nokia standardised the battery interface across this mid-range lineup — same 3.7V nominal, same physical envelope, same BSI resistor pin for battery identification.\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 Nokia hardware and confirmed the BMS handshake via the BSI pin. The protection circuit tripped correctly at low-voltage cutoff and charge termination occurred at the expected 4.2V ceiling.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge down to automatic shutdown, then charge uninterrupted to 100% before use. The Nokia fuel gauge IC was calibrated to your worn original cell — it needs one complete cycle against the new cell's discharge curve to report accurate percentages.\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 3250 shuts down suddenly at 20–30% battery remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nokia 3250's display and GSM radio together draw a sharp current spike during active use. An aged or fresh-out-of-storage cell with high internal impedance cannot sustain voltage under that load — it drops below the BMS cutoff threshold even though the fuel gauge still shows charge remaining. This is a voltage cliff, not a capacity issue. Fitting a new cell with lower internal resistance eliminates the sag, and one full calibration cycle corrects the percentage readout to match actual remaining charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shows incorrect battery percentage after fitting the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nokia fuel gauge IC stores a discharge curve built from hundreds of cycles on the original cell. A new cell has a different impedance profile, so the IC maps voltage readings to the wrong percentage points — commonly jumping from 60% to 15% with no warning. This is not a fault with the replacement cell. Discharge the phone fully until it powers off automatically, then charge to 100% in one uninterrupted session. After that single cycle the IC recalibrates its curve to the new cell and percentage reporting stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409486348378,"sku":"BWCS-NK6MSL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409486381146,"sku":"BWCS-NK6MSL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409486413914,"sku":"BWCS-NK6MSL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK6MSL-1.webp?v=1779579815","url":"https:\/\/batteryweb.com\/products\/nokia-3250-replacement-battery-37v-700mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}