{"product_id":"red-digital-cinema-redmote-replacement-battery-37v-2200mah-li-ion","title":"Red Digital Cinema REDmote 645-0046 Compatible Battery 3.7V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRed Digital Cinema REDmote — 3.7V Li-ion Replacement Battery (645-0046)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2200mAh Li-ion cell built to fit the Red Digital Cinema REDmote wireless remote control. The REDmote pairs with RED cinema cameras to give operators remote control during production shoots. Voltage and capacity match the OEM spec exactly — 3.7V, 2200mAh (8.14Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eREDmote platform fit:\u003c\/strong\u003e\n    The REDmote uses a dedicated internal cell that must match the BMS voltage window and physical footprint. This cell measures 72.85 × 51.70 × 5.70mm — the same profile as the OEM unit — so the connector seats correctly and the remote powers on without a low-voltage rejection flag.\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 REDmote-compatible test rigs. The BMS accepted the cell without a rejection event, and the remote's wireless link held stable across multiple test sessions at full draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for the REDmote:\u003c\/strong\u003e\n    Run one full charge cycle from the REDmote's own charging port before taking it to set. Some remote BMS implementations recalibrate their state-of-charge estimate on the first full cycle — skipping this can cause the charge indicator to read inaccurately during your first production day.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eREDmote showing dead battery on a freshly charged replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a new Li-ion cell ships, its resting voltage often sits between 3.6V and 3.7V — not at full charge. The REDmote's BMS maps that voltage against its stored discharge curve, and if the cell hasn't completed a calibration cycle, the indicator can flag it as near-empty. This isn't a faulty cell. Plug the REDmote into its charger and run a complete charge cycle to 4.2V before use. After that first cycle, the BMS reads the cell correctly and the indicator stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the REDmote display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe REDmote's charge indicator maps display percentage to voltage thresholds set during manufacture. A new replacement cell has a slightly different discharge curve shape than an aged OEM cell — the BMS hasn't learned it yet. This causes percentage values to skip or drop sharply rather than descend smoothly. Run two to three full charge-discharge cycles through the remote and the indicator mapping corrects itself. If jumping persists past three cycles, check that the cell is seated fully and the connector is making clean contact at the 3.7V nominal rail.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333660115034,"sku":"BWCS-RDM046MC-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333660147802,"sku":"BWCS-RDM046MC-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333660180570,"sku":"BWCS-RDM046MC-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RDM046MC-1.webp?v=1778213032","url":"https:\/\/batteryweb.com\/products\/red-digital-cinema-redmote-replacement-battery-37v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}