{"product_id":"espn-dmr-1-replacement-battery-37v-1000mah-li-ion","title":"ESPN DMR-1 Remote Control Replacement Battery 3.7V 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eESPN DMR-1 — 3.7V Li-ion Replacement Battery (CH603448S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion battery that replaces part number CH603448S1P in the ESPN DMR-1 remote control. It restores wireless transmission function to the remote when the original cell has depleted or failed. Dimensions are 52.20 x 34.25 x 6.37mm — confirm against your existing cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDMR-1 compatibility:\u003c\/strong\u003e\n    The DMR-1 remote runs on a single Li-ion cell at 3.7V nominal. This replacement matches the OEM voltage rail and connector footprint, so the remote's IR transmission circuit operates at the correct drive level.\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 tripped correctly at the low-voltage cutoff threshold and recovered cleanly on recharge — no BMS lockout observed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install orientation check:\u003c\/strong\u003e\n    Li-ion pouch cells in remotes have a keyed connector, but confirm the polarity markings on the connector match the remote's socket before closing the housing. A reversed connection won't damage the cell, but the remote will not power on.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eIR output drop on the DMR-1 as cell voltage falls\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DMR-1's IR LED driver needs a stable voltage to push enough current through the emitter for a clean signal. As the Li-ion cell discharges past roughly 3.4V, the LED drive current drops below the threshold needed for reliable transmission. The remote may still appear \"on\" — the indicator light might flash — but the IR burst loses the range and intensity needed to register on the receiver. Replacing the cell when resting voltage reads below 3.5V prevents this gradual dropout.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRemote stops responding after the battery is replaced\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe most common cause is connector polarity. Even though the DMR-1 uses a keyed Li-ion connector, the housing can be reassembled with the cable seated at a slight angle, breaking contact intermittently. Open the remote, reseat the connector firmly until it clicks, then test. If the remote still won't respond, measure the replacement cell's voltage with a multimeter — a new cell should read at least 3.6V at rest before installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416103649370,"sku":"BWCS-DMR001SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416103682138,"sku":"BWCS-DMR001SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416103714906,"sku":"BWCS-DMR001SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DMR001SL-1.webp?v=1779760264","url":"https:\/\/batteryweb.com\/products\/espn-dmr-1-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}