{"product_id":"magellan-gps-750m-replacement-battery-12v-1800mah-ni-mh","title":"Magellan GPS 750M Replacement Battery 12V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMagellan GPS 750M Series — 12V Ni-MH Replacement Battery (980646-02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 12V 1800mAh Ni-MH cell replaces part number 980646-02 in the Magellan GPS 750M and GPS 750M Plus portable navigation devices. It restores independent operation when the original cell no longer holds a charge. Capacity is rated at 21.6Wh, matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGPS 750M and 750M Plus fit:\u003c\/strong\u003e\n    Both models run the same 12V power rail, share the same connector orientation, and use the same BMS handshake sequence — a single cell covers both variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the GPS 750M's full charge and discharge sequence. The BMS accepted the cell without error flags, and charge termination triggered correctly at full capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-start satellite acquisition:\u003c\/strong\u003e\n    After fitting this cell, power the unit on outdoors and let it run until it acquires a satellite fix. A full cold start — triggered by complete power removal — takes 5 to 10 minutes for first lock. Subsequent warm starts drop to under a minute once almanac data is cached.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGPS accuracy reduced as battery level drops on the 750M\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Magellan GPS 750M scales back receiver sensitivity at low voltage to reduce current draw and extend remaining operating time. This shows up as fewer satellites tracked and a wider position error circle on screen. It is not a hardware fault — it is deliberate power management in the firmware. Keeping the cell charged above the low-battery threshold maintains full receiver sensitivity and tighter positional accuracy.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGPS 750M shuts off without warning before the battery indicator reads empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter fitting a new cell, the 750M's fuel gauge is uncalibrated against the new battery's actual discharge curve. The on-screen indicator still references the old cell's voltage thresholds, so the unit can hit its hardware cutoff voltage before the visual warning appears. Run two or three full charge-discharge cycles outdoors — the firmware recalibrates the cutoff threshold against the new cell's curve, and warning timing returns to normal. The hardware cutoff on this platform triggers at approximately 10.5V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377656725594,"sku":"BWCS-MGP750SL-1","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377656758362,"sku":"BWCS-MGP750SL-2","price":68.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377656791130,"sku":"BWCS-MGP750SL-3","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MGP750SL_1.webp?v=1778771802","url":"https:\/\/batteryweb.com\/products\/magellan-gps-750m-replacement-battery-12v-1800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}