{"product_id":"marantz-rc9001-replacement-battery-37v-3000mah-li-ion","title":"Marantz RC9001 Replacement Battery 3.7V 3000mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMarantz RC9001 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 3000mAh Li-ion battery replaces the internal rechargeable cell in the Marantz RC9001 infrared remote control. The RC9001 is used to operate Marantz AV receivers and amplifiers. When the original cell can no longer hold a charge, this battery restores full IR output to the remote.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRC9001 fit:\u003c\/strong\u003e\n    The RC9001 uses a single internal Li-ion cell rather than standard AA or AAA alkalines. The replacement cell must match the 3.7V nominal voltage and the physical dimensions (66.70 × 20.45 × 18.50mm) to seat correctly in the housing and connect to the onboard charge circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge cycles and confirmed the protection circuit responds correctly to both low-voltage cutoff and overcharge conditions. IR output at the LED held consistent across the charge range where the RC9001 operates.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eConnector orientation before closing the case:\u003c\/strong\u003e\n    The RC9001's internal connector is short. Before snapping the rear cover back on, verify the lead isn't kinked against the PCB — a pinched lead can cause intermittent disconnects that look like a faulty battery but aren't.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the RC9001 stops responding even with a charged battery installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe RC9001's IR LED requires a stable voltage above roughly 3.2V to trigger a full-strength pulse. If the internal cell has aged past its useful cycle count, the resting voltage may read 3.6V on a meter but sag below the LED threshold the moment a button is pressed. This is a load-drop failure, not a charge failure. A new cell at 3.7V nominal eliminates the sag and restores consistent IR output.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRC9001 remote needs to be held much closer to the receiver than before\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReduced operating range is one of the first signs a Li-ion cell is nearing end of life. As capacity fades, the cell delivers less current per pulse, which weakens the IR LED burst. The receiver's sensor still picks up the signal at close range but misses it at normal distances. Replacing the cell and charging it fully to 4.2V returns the IR output to spec.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416101388378,"sku":"BWCS-PSU9601RC-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416101421146,"sku":"BWCS-PSU9601RC-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416101453914,"sku":"BWCS-PSU9601RC-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PSU9601RC-1.webp?v=1779760284","url":"https:\/\/batteryweb.com\/products\/marantz-rc9001-replacement-battery-37v-3000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}