{"product_id":"nokia-6700-classic-replacement-battery-37v-800mah-li-ion","title":"Nokia BL-6Q 6700 Classic Replacement Battery 3.7V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNokia 6700 Classic — 3.7V Li-ion Replacement Battery (BL-6Q)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 800mAh Li-ion replacement battery for the Nokia 6700 Classic and 6700 Classic Illuvial. It matches the OEM BL-6Q spec and fits the original battery bay without modification. Voltage and physical dimensions — 39.75 × 37.75 × 6.50mm — are consistent with the factory part.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e6700 Classic and 6700 Classic Illuvial compatibility:\u003c\/strong\u003e\n    Both variants share the same battery bay dimensions, connector pinout, and 3.7V supply rail. The BL-6Q form factor covers both without any adapter or 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 the 6700 Classic platform. The BMS accepted the charge IC handshake cleanly and held voltage above the low-battery cutoff threshold through the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After fitting a new cell, run one complete discharge to the phone's auto-shutdown point, then charge uninterrupted to 100%. This gives the fuel gauge IC a measured discharge curve for the new cell before it starts reporting percentage to the OS.\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 a replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 6700 Classic's fuel gauge IC was calibrated against the original BL-6Q cell's discharge curve. A new cell with a slightly different internal resistance profile will hit the IC's voltage floor earlier than the displayed percentage suggests. Under modem load — active call or data — the voltage sag is sharper, so the shutdown threshold is crossed while the display still reads 20–30%. One full discharge-recharge cycle recalibrates the IC against the new curve and corrects this behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone will not power on after the battery sat discharged in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells stored below approximately 2.5V trigger a BMS lockout to prevent damage from over-discharge. The 6700 Classic will show no response — no boot screen, no charging indicator — when this lockout is active. Connect the phone to a wall charger, not a USB port, and leave it for 15–20 minutes without pressing the power button. The charge IC needs time to trickle current into the cell above the BMS reset threshold, typically around 2.9V, before normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409492410458,"sku":"BWCS-NK6QSL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409492443226,"sku":"BWCS-NK6QSL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409492475994,"sku":"BWCS-NK6QSL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK6QSL-1.webp?v=1779579814","url":"https:\/\/batteryweb.com\/products\/nokia-6700-classic-replacement-battery-37v-800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}