{"product_id":"typhoon-myguide-4328-replacement-battery-37v-1100mah-li-ion","title":"Typhoon Myguide 4328 GPS Replacement Battery M10A 3.7V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTyphoon Myguide 4328 — 3.7V Li-ion Replacement Battery (M10A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1100mAh Li-ion cell replaces the original battery in the Typhoon Myguide 4328, Myguide 4328 BT, and Myguide 4328 sat nav. It matches the OEM M10A and CM-2 part numbers and sits within the same 53.90 × 34.70 × 5.20mm footprint. Capacity is 4.07Wh — identical to the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMyguide 4328 platform fit:\u003c\/strong\u003e\n    The 4328, 4328 BT, and 4328 sat nav variants share the same battery bay dimensions, connector pinout, and 3.7V supply rail. One cell covers all three — no adapter or modification required.\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 the Myguide 4328 platform. The BMS held a stable charge curve to 4.2V and cut off cleanly at the low-voltage threshold without triggering false shutdowns.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-start satellite acquisition after fitting:\u003c\/strong\u003e\n    After any full power interruption, the Myguide 4328 performs a cold start. Take the unit outdoors immediately after fitting and power it on — first satellite fix typically takes 5 to 10 minutes. Subsequent warm starts drop to under a minute once ephemeris 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 dropping at low battery on the Myguide 4328\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the cell voltage falls below roughly 3.5V, some GPS receivers reduce signal-processing power to extend remaining charge. On the Myguide 4328 this can show as position drift or slower route recalculation before the low-battery indicator appears. It is not a unit fault — it is a deliberate power-saving behaviour at the receiver level. Keeping the cell above 3.6V during active navigation maintains full receiver sensitivity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMyguide 4328 shutting off without low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge is uncalibrated against the new cell's discharge curve. The unit's voltage-threshold logic was last calibrated to the worn original battery, which had a steeper voltage drop near end of charge. The new cell holds a flatter discharge curve, so the software does not see a gradual warning zone — it hits the hardware cutoff at around 3.0V abruptly. Run two full charge-discharge cycles to let the gauge recalibrate against the new cell's profile.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377649680474,"sku":"BWCS-MG4328SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377649713242,"sku":"BWCS-MG4328SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377649746010,"sku":"BWCS-MG4328SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MG4328SL-1.webp?v=1778771802","url":"https:\/\/batteryweb.com\/products\/typhoon-myguide-4328-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}