{"product_id":"mio-cyclo-505-hc-replacement-battery-37v-1100mah-li-ion","title":"Mio cyclo 505 HC Replacement Battery 3.7V 1100mAh BP-DG500-11\/1500 MX","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMio Cyclo 505 HC \/ 500 HC — 3.7V Li-ion Replacement Battery (BP-DG500-11\/1500 MX)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 1100mAh Li-ion cell for the Mio Cyclo 505 HC and Cyclo 500 HC dashcams. It replaces the internal battery that powers the unit between drives and keeps parking mode running after the engine stops. Capacity matches the original at 1100mAh (4.07Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCyclo 505 HC and 500 HC fit:\u003c\/strong\u003e\n    Both models share the same internal battery bay dimensions, voltage rail, and BMS handshake protocol — the same 50 x 35 x 6mm cell powers both 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 full charge and discharge on the Cyclo platform. The BMS accepted the cell without fault flags, and the protection circuit tripped correctly at the low-voltage threshold before cell damage could occur.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle parking mode calibration:\u003c\/strong\u003e\n    After installing a new cell, complete one full drive cycle with the dashcam connected to power before relying on parking mode. The capacitor management system calibrates its parking mode duration estimate against the new cell during that first full charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Cyclo 505 HC stops recording mid-parking session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eParking mode draws continuously from the internal battery with no engine charging input. A degraded cell drops below the BMS cutoff voltage faster than expected, ending the recording session early. The BMS on this unit cuts power at approximately 3.0V to protect the cell — once that threshold is hit, recording stops immediately. A fresh cell at full 1100mAh capacity restores the full parking mode window the unit was calibrated for.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFootage corrupt or missing after power interruption\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the internal battery sags under load, the dashcam can lose power mid-write, leaving the last video file incomplete or unreadable. The Cyclo 505 HC writes footage in segments, but a sudden voltage drop bypasses the normal file-close routine. This is most common with a battery that reads as charged but collapses under the sustained draw of active recording. Replacing the cell eliminates the voltage sag — check that the new battery reaches a full 4.2V after the first charge cycle before relying on it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360108642394,"sku":"BWCS-MIC505SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360108675162,"sku":"BWCS-MIC505SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360108707930,"sku":"BWCS-MIC505SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MIC505SL-1.webp?v=1778610859","url":"https:\/\/batteryweb.com\/products\/mio-cyclo-505-hc-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}