{"product_id":"medion-pna400-replacement-battery-37v-2200mah-li-ion","title":"Medion PNA400 GPS Replacement Battery 3.7V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMedion PNA400 Series — 3.7V Li-ion Replacement Battery (C03101TH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2200mAh Li-ion cell replaces the original battery in the Medion PNA400, PAN405, Transonic 5000, and PNA-400 GPS navigators. It matches OEM part numbers C03101TH and E4MT062201B12. When the original cell degrades and the device shuts off mid-route or fails to hold charge, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePNA400 series fit:\u003c\/strong\u003e\n    These models share the same 3.7V single-cell configuration, physical connector, and battery bay dimensions (68.50 x 18.50mm), so one cell covers the full range 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 charge and discharge on a PNA400 unit, confirmed BMS handshake with the device, and verified stable voltage output from full charge down to the low-battery cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-start satellite acquisition after swap:\u003c\/strong\u003e\n    After fitting this cell, power the GPS on outdoors before driving. The unit performs a cold start after any full power interruption — first satellite fix takes 5–10 minutes. Subsequent warm starts drop 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 PNA400\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome GPS receivers scale back antenna sensitivity when the cell voltage falls below a set threshold — typically around 3.5V on single-cell Li-ion units. On the PNA400, this shows up as slower position updates or increased positional drift before the device shows a low-battery warning. A worn original cell spends more time below that threshold during active navigation. A fresh cell at full capacity keeps the receiver running at full sensitivity for longer.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePNA400 shutting off without a low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the battery indicator is uncalibrated against the actual cell — the device reads the voltage curve from the original factory cell, and a degraded or replacement cell may hit the hardware cutoff before the software indicator reaches zero. To recalibrate, charge the new battery to 100%, then run active navigation until the device shuts off on its own. Recharge fully without interruption. After two full cycles, the indicator and actual cutoff align reliably.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377677107290,"sku":"BWCS-MD400SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377677140058,"sku":"BWCS-MD400SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377677172826,"sku":"BWCS-MD400SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MD400SL-1.webp?v=1778771802","url":"https:\/\/batteryweb.com\/products\/medion-pna400-replacement-battery-37v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}