{"product_id":"mitac-mio-8380-replacement-battery-37v-1450mah-li-polymer","title":"Mitac Mio 8380 GPS Replacement Battery 3.7V 1450mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMitac Mio 8380 — 3.7V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1450mAh Li-Polymer battery fits the Mitac Mio 8380 portable GPS navigation device. It replaces the original cell that powers the touchscreen display and onboard navigation processor. Capacity is 1450mAh (5.37Wh) — matched to the stock specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMio 8380 fitment:\u003c\/strong\u003e\n    The 8380 uses a single Li-Polymer cell at 3.7V nominal. The onboard protection circuit manages charge termination and low-voltage cutoff. This replacement cell matches that voltage rail so the protection circuit operates within its intended thresholds.\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 bench. The protection circuit accepted charge termination normally and the low-voltage cutoff triggered at the correct threshold with no anomalies in the charge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installing this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before use. The Mio 8380's fuel gauge IC is calibrated against the old cell's discharge curve — one full cycle corrects the reference and prevents erratic percentage readings.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Mio 8380 shows wrong battery percentage after a cell replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 8380's fuel gauge IC stores a learned discharge curve from the original cell. A new cell has a different impedance profile, so the IC's charge estimates drift immediately after the swap. The device may show 50% and shut down, or sit at 99% for an extended period. One full discharge-to-shutdown followed by an uninterrupted charge to 100% forces the IC to rewrite its reference curve against the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMio 8380 not powering on after sitting in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge during storage. If the cell voltage drops below approximately 2.5V, the protection circuit locks out and the device will not respond to a normal charge connection. Connect the unit to a charger and leave it undisturbed for 15–30 minutes — most chargers apply a low-current trickle that nudges the cell above the BMS re-enable threshold. If the device still shows no response after that period, check that the charge cable is delivering voltage with a known-working cable.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405146292314,"sku":"BWCS-MIO8380SL-1","price":27.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405146325082,"sku":"BWCS-MIO8380SL-2","price":31.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405146357850,"sku":"BWCS-MIO8380SL-3","price":34.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MIO8380SL-big.webp?v=1779370263","url":"https:\/\/batteryweb.com\/products\/mitac-mio-8380-replacement-battery-37v-1450mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}